diff --git a/randomizer.html b/randomizer.html
index 9cb5df87a..935245cd9 100644
--- a/randomizer.html
+++ b/randomizer.html
@@ -150,7 +150,7 @@ <h2>Attempting to get Spoiler Log</h2>
                             <hr />
                             <!-- Toasts -->
                             <div id="toasts">
-                                <div class="toast-container position-fixed bottom-0 end-0 p-3"></div>
+                                <div id="toast-container" class="toast-container position-fixed bottom-0 end-0 p-3"></div>
                             </div>
                             <div class="container" id="nav-gen-type-container">
                                 <nav style="display: inline-block; float: none; vertical-align: top;">
diff --git a/randomizer/ProtoSerializer.py b/randomizer/ProtoSerializer.py
new file mode 100644
index 000000000..2d30471a8
--- /dev/null
+++ b/randomizer/ProtoSerializer.py
@@ -0,0 +1,962 @@
+"""Settings serialization to/from Protocol Buffers."""
+
+import base64
+import logging
+import sys
+import os
+from typing import Optional, TYPE_CHECKING
+
+proto_gen_path = os.path.join(os.path.dirname(__file__), 'proto_gen')
+if proto_gen_path not in sys.path:
+    sys.path.insert(0, proto_gen_path)
+from randomizer.proto_gen import settings_pb2
+from randomizer.proto_gen import item_settings_pb2
+from randomizer.proto_gen import requirement_settings_pb2
+from randomizer.proto_gen import overworld_settings_pb2
+from randomizer.proto_gen import endgame_settings_pb2
+from randomizer.proto_gen import qol_settings_pb2
+from randomizer.proto_gen import plandomizer_settings_pb2
+
+logger = logging.getLogger(__name__)
+
+
+def settings_to_proto(settings) -> settings_pb2.SettingsInfo:
+    """Convert a Settings object to a SettingsInfo protobuf message."""
+    proto = settings_pb2.SettingsInfo()
+    
+    # Convert each settings category
+    _populate_item_settings(settings, proto.item_settings)
+    _populate_requirement_settings(settings, proto.requirement_settings)
+    _populate_overworld_settings(settings, proto.overworld_settings)
+    _populate_endgame_settings(settings, proto.endgame_settings)
+    _populate_qol_settings(settings, proto.qol_settings)
+    _populate_plandomizer_settings(settings, proto.plandomizer_settings)
+    
+    return proto
+
+
+def proto_to_settings(proto: settings_pb2.SettingsInfo, settings):
+    """Apply settings from a SettingsInfo protobuf message to a Settings object.
+    
+    Args:
+        proto: SettingsInfo protobuf message
+        settings: Settings object to update
+    """
+    _apply_item_settings(proto.item_settings, settings)
+    _apply_requirement_settings(proto.requirement_settings, settings)
+    _apply_overworld_settings(proto.overworld_settings, settings)
+    _apply_endgame_settings(proto.endgame_settings, settings)
+    _apply_qol_settings(proto.qol_settings, settings)
+    _apply_plandomizer_settings(proto.plandomizer_settings, settings)
+
+
+def serialize_settings_to_base64(settings) -> str:
+    """Serialize a Settings object to a base64-encoded protobuf string.
+    
+    This creates a compact, copy-paste friendly representation of settings.
+    
+    Args:
+        settings: Settings object to serialize
+        
+    Returns:
+        Base64-encoded protobuf string
+    """
+    proto = settings_to_proto(settings)
+    binary_data = proto.SerializeToString()
+    return base64.b64encode(binary_data).decode('utf-8')
+
+
+def deserialize_settings_from_base64(proto_string: str) -> settings_pb2.SettingsInfo:
+    """Deserialize a base64-encoded protobuf string to a SettingsInfo message.
+    
+    Args:
+        proto_string: Base64-encoded protobuf string
+        
+    Returns:
+        SettingsInfo protobuf message
+        
+    Raises:
+        ValueError: If the string cannot be decoded or parsed
+    """
+    try:
+        binary_data = base64.b64decode(proto_string)
+        proto = settings_pb2.SettingsInfo()
+        proto.ParseFromString(binary_data)
+        return proto
+    except Exception as e:
+        raise ValueError(f"Failed to deserialize proto string: {e}")
+
+
+def is_proto_settings_string(settings_string: str) -> bool:
+    """Detect if a settings string is in protobuf format.
+    
+    Attempts to distinguish between the old custom base64 format and
+    the new protobuf format by trying to parse as protobuf.
+    
+    Args:
+        settings_string: Settings string to check
+        
+    Returns:
+        True if the string appears to be a valid protobuf, False otherwise
+    """
+    try:
+        deserialize_settings_from_base64(settings_string)
+        return True
+    except:
+        return False
+
+
+# Helper functions to populate proto messages from Settings
+def _populate_item_settings(settings, proto: item_settings_pb2.ItemSettings):
+    """Populate ItemSettings proto from Settings object."""
+    proto.decouple_item_rando = bool(settings.decouple_item_rando)
+    
+    # ItemPool - create one pool for each of the 10 lists to preserve exact distribution
+    # Always create all 10 pools (even if empty) to maintain index mapping
+    for i in range(10):
+        pool = proto.pools.add()
+        list_attr = f"item_rando_list_{i}"
+        if hasattr(settings, list_attr):
+            item_list = getattr(settings, list_attr)
+            if item_list:
+                # Extract .value from enums if they exist
+                items = [x.value if hasattr(x, 'value') else x for x in item_list]
+                
+                # For decoupled mode, lists 0-4 are items, 5-9 are checks
+                # For coupled mode, all lists are items
+                if settings.decouple_item_rando and i >= 5:
+                    pool.checks.extend(items)
+                else:
+                    pool.items.extend(items)
+    
+    # StartingMovePool - multiple pools with items and count_given
+    # Always create all 5 pools (even if empty) to maintain index mapping
+    # Read from individual starting_moves_list_1 through _5 fields (not the combined lists)
+    for i in range(1, 6):  # 1-5 inclusive
+        move_pool = proto.starting_move_pools.add()
+        list_attr = f"starting_moves_list_{i}"
+        count_attr = f"starting_moves_list_count_{i}"
+        
+        if hasattr(settings, list_attr):
+            move_list = getattr(settings, list_attr)
+            if move_list:
+                items_with_values = [x.value if hasattr(x, 'value') else x for x in move_list]
+                move_pool.items.extend(items_with_values)
+        
+        if hasattr(settings, count_attr):
+            count_val = getattr(settings, count_attr)
+            move_pool.count_given = count_val
+        else:
+            move_pool.count_given = 0
+    
+    # Filler items
+    if settings.filler_items_selected:
+        proto.filler_items.extend([x.value if hasattr(x, 'value') else x for x in settings.filler_items_selected])
+    
+    # Ice trap settings
+    proto.ice_traps.count = settings.ice_trap_count
+    proto.ice_traps.model = settings.ice_trap_model_v2
+    proto.ice_traps.weights.bubble = settings.trap_weight_bubble
+    proto.ice_traps.weights.reverse = settings.trap_weight_reverse
+    proto.ice_traps.weights.slow = settings.trap_weight_slow
+    proto.ice_traps.weights.disable_a = settings.trap_weight_disablea
+    proto.ice_traps.weights.disable_b = settings.trap_weight_disableb
+    proto.ice_traps.weights.disable_z = settings.trap_weight_disablez
+    proto.ice_traps.weights.disable_c_up = settings.trap_weight_disablecu
+    proto.ice_traps.weights.get_out = settings.trap_weight_getout
+    proto.ice_traps.weights.dry = settings.trap_weight_dry
+    proto.ice_traps.weights.flip = settings.trap_weight_flip
+    proto.ice_traps.weights.ice_floor = settings.trap_weight_icefloor
+    proto.ice_traps.weights.paper = settings.trap_weight_paper
+    proto.ice_traps.weights.slip = settings.trap_weight_slip
+    proto.ice_traps.weights.animal = settings.trap_weight_animal
+    proto.ice_traps.weights.rockfall = settings.trap_weight_rockfall
+    proto.ice_traps.weights.disable_tag = settings.trap_weight_disabletag
+    
+    # Item counts
+    proto.item_counts.golden_bananas = settings.total_gbs
+    proto.item_counts.banana_medals = settings.total_medals
+    proto.item_counts.banana_fairies = settings.total_fairies
+    proto.item_counts.battle_crowns = settings.total_crowns
+    proto.item_counts.rainbow_coins = settings.total_rainbow_coins
+    proto.item_counts.pearls = settings.total_pearls
+    
+    # Max snide reward requirement
+    proto.max_snide_reward_requirement = settings.most_snide_rewards
+
+def _populate_requirement_settings(settings, proto: requirement_settings_pb2.RequirementSettings):
+    """Populate RequirementSettings proto from Settings object."""
+    # B Locker option
+    proto.b_locker_option.opt = settings.blocker_selection_behavior
+    if settings.BLockerEntryCount:
+        proto.b_locker_option.amounts.extend(settings.BLockerEntryCount)
+    proto.b_locker_option.maximum = settings.blocker_max
+    proto.maximize_helm_b_locker = bool(settings.maximize_helm_blocker)
+    
+    # Troff'n'Scoff option
+    proto.tns_option.opt = settings.tns_selection_behavior
+    if settings.BossBananas:
+        proto.tns_option.amounts.extend(settings.BossBananas)
+    proto.tns_option.maximum = settings.troff_max
+    
+    # Medals for Jetpac
+    proto.medals_for_jetpac.opt = settings.medal_jetpac_behavior
+    proto.medals_for_jetpac.selected_quantity = settings.medal_requirement
+    
+    # Pearls for Mermaid
+    proto.pearls_for_mermaid.opt = settings.pearl_mermaid_behavior
+    proto.pearls_for_mermaid.selected_quantity = settings.mermaid_gb_pearls
+    
+    # Fairies for Fairy Queen
+    proto.fairies_for_fairy_queen.opt = settings.fairy_queen_behavior
+    proto.fairies_for_fairy_queen.selected_quantity = settings.rareware_gb_fairies
+    
+    # CBs for Medal
+    proto.cbs_for_medal.opt = settings.cb_medal_behavior_new
+    proto.cbs_for_medal.selected_quantity = settings.medal_cb_req
+    
+    # Open lobbies
+    proto.open_lobbies = bool(settings.open_lobbies)
+    
+    # Switchsanity - only tracking enabled state for now
+    # Individual switch assignments could be added if needed, but would require
+    # mapping ~35+ individual switchsanity_switch_* attributes to proto fields
+    proto.switchsanity.enabled = bool(settings.switchsanity_enabled)
+    
+    # Smaller shops
+    proto.smaller_shops = bool(settings.smaller_shops)
+    
+    # Tooie style shops and free trade agreement
+    proto.tooie_style_shops = bool(settings.shops_dont_cost)
+    proto.free_trade_agreement = bool(settings.free_trade_setting)
+    
+    # Removed barriers
+    if settings.remove_barriers_selected:
+        proto.removed_barriers.extend([x.value if hasattr(x, 'value') else x for x in settings.remove_barriers_selected])
+    
+    # Galleon water
+    proto.galleon_water = settings.galleon_water
+    
+    # Fungi time
+    proto.fungi_time = settings.fungi_time
+    
+    # Shop prices
+    proto.shop_prices = settings.random_prices
+    
+    # Activate bananaports
+    proto.activate_bananaports = settings.activate_all_bananaports
+    
+    # Faster checks
+    if settings.faster_checks_selected:
+        proto.faster_checks.extend([x.value if hasattr(x, 'value') else x for x in settings.faster_checks_selected])
+    
+    # Puzzle rando
+    proto.puzzle_rando = settings.puzzle_rando_difficulty
+
+
+def _populate_overworld_settings(settings, proto: overworld_settings_pb2.OverworldSettings):
+    """Populate OverworldSettings proto from Settings object."""
+    # World Navigation
+    proto.entrance_randomizer = settings.level_randomization
+    proto.shuffle_helm_location = bool(settings.shuffle_helm_location)
+    proto.cross_map_bananaports = settings.bananaport_rando
+    proto.random_starting_region = settings.random_starting_region_new
+    
+    # Kong models
+    proto.kong_models.dk_model = settings.kong_model_dk
+    proto.kong_models.diddy_model = settings.kong_model_diddy
+    proto.kong_models.lanky_model = settings.kong_model_lanky
+    proto.kong_models.tiny_model = settings.kong_model_tiny
+    proto.kong_models.chunky_model = settings.kong_model_chunky
+    proto.kong_models.mode = settings.kong_model_mode
+    
+    # Location Randomizers
+    proto.dirt_patch_randomizer = bool(settings.item_rando_list_selected and any(x.value == 0 for x in settings.item_rando_list_selected))
+    proto.banana_coin_randomizer = bool(settings.coin_rando)
+    proto.banana_fairy_randomizer = bool(settings.item_rando_list_selected and any(x.value == 2 for x in settings.item_rando_list_selected))
+    proto.melon_crate_randomizer = bool(settings.item_rando_list_selected and any(x.value == 3 for x in settings.item_rando_list_selected))
+    proto.battle_crown_randomizer = bool(settings.crown_placement_rando)
+    proto.race_coin_randomizer = bool(settings.race_coin_rando)
+    proto.randomize_pickups = bool(settings.randomize_pickups)
+    proto.shuffle_shop_locations = bool(settings.shuffle_shops)
+    
+    # CB randomizer
+    proto.cb_randomizer.enabled = bool(settings.cb_rando_enabled)
+    if settings.cb_rando_list_selected:
+        proto.cb_randomizer.cb_randomized_levels.extend([x.value if hasattr(x, 'value') else x for x in settings.cb_rando_list_selected])
+    
+    proto.kasplat_randomizer = settings.kasplat_rando_setting
+    
+    # Bananaport randomizer
+    proto.bananaport_randomizer.opt = settings.bananaport_placement_rando
+    # Note: Settings doesn't have a bananaport_placement_list attribute
+    # Only has bananaport_placement_rando (enum) and useful_bananaport_placement (bool)
+    
+    proto.wrinky_door_randomizer = bool(settings.wrinkly_location_rando)
+    proto.tns_portal_randomizer = bool(settings.tns_location_rando)
+    proto.vanilla_door_shuffle = bool(settings.vanilla_door_rando)
+    proto.dos_doors = bool(settings.dos_door_rando)
+    proto.dk_portal_randomizer = settings.dk_portal_location_rando_v2
+    
+    # Bosses
+    proto.shuffle_boss_location = bool(settings.boss_location_rando)
+    proto.krool_in_boss_pool = settings.krool_in_boss_pool_v2
+    if settings.boss_maps:
+        proto.bosses_selected.extend([x.value if hasattr(x, 'value') else x for x in settings.boss_maps])
+    
+    # Enemies
+    if settings.enemies_selected:
+        proto.shuffled_enemies.extend([x.value if hasattr(x, 'value') else x for x in settings.enemies_selected])
+    proto.crown_enemies = settings.crown_enemy_difficulty
+    proto.random_enemy_speed = bool(settings.enemy_speed_rando)
+    proto.random_enemy_size = bool(settings.randomize_enemy_sizes)
+    
+    # Bonus Barrels
+    if settings.minigames_list_selected:
+        proto.shuffled_bonus_barrels.extend([x.value if hasattr(x, 'value') else x for x in settings.minigames_list_selected])
+    proto.disable_hard_minigames = bool(settings.disable_hard_minigames)
+    proto.auto_complete_bonus_barrels = bool(settings.bonus_barrel_auto_complete)
+    proto.alternate_minecart_mayhem = bool(settings.alt_minecart_mayhem)
+    
+    # Difficulty
+    proto.no_heals = bool(settings.no_healing)
+    proto.no_melon_slice_drops = bool(settings.no_melons)
+    proto.ice_traps_damage_player = bool(settings.ice_traps_damage)
+    proto.mirror_mode = bool(settings.mirror_mode)
+    proto.tag_barrels_disabled = bool(settings.disable_tag_barrels)
+    
+    # Helm Hurry
+    proto.helm_hurry_mode.enabled = bool(settings.helm_hurry)
+    if settings.helm_hurry:
+        proto.helm_hurry_mode.starting_time = settings.helmhurry_list_starting_time
+        proto.helm_hurry_mode.golden_banana_time = settings.helmhurry_list_golden_banana
+        proto.helm_hurry_mode.blueprint_time = settings.helmhurry_list_blueprint
+        proto.helm_hurry_mode.company_coin_time = settings.helmhurry_list_company_coins
+        proto.helm_hurry_mode.move_time = settings.helmhurry_list_move
+        proto.helm_hurry_mode.banana_medal_time = settings.helmhurry_list_banana_medal
+        proto.helm_hurry_mode.rainbow_coin_time = settings.helmhurry_list_rainbow_coin
+        proto.helm_hurry_mode.boss_key_time = settings.helmhurry_list_boss_key
+        proto.helm_hurry_mode.battle_crown_time = settings.helmhurry_list_battle_crown
+        proto.helm_hurry_mode.bean_time = settings.helmhurry_list_bean
+        proto.helm_hurry_mode.pearl_time = settings.helmhurry_list_pearl
+        proto.helm_hurry_mode.kong_time = settings.helmhurry_list_kongs
+        proto.helm_hurry_mode.fairy_time = settings.helmhurry_list_fairy
+        proto.helm_hurry_mode.cb_time = settings.helmhurry_list_colored_bananas
+        proto.helm_hurry_mode.trap_time = settings.helmhurry_list_ice_traps
+    
+    proto.no_consumable_upgrades = bool(settings.no_consumable_upgrades)
+    
+    # Hard mode
+    from randomizer.Enums.Settings import HardModeSelected
+    if settings.hard_mode_selected:
+        proto.hard_mode.hard_enemies = HardModeSelected.hard_enemies in settings.hard_mode_selected
+        proto.hard_mode.water_is_lava = HardModeSelected.water_is_lava in settings.hard_mode_selected
+        proto.hard_mode.reduced_fall_damage_threshold = HardModeSelected.reduced_fall_damage_threshold in settings.hard_mode_selected
+        proto.hard_mode.shuffled_jetpac_enemies = HardModeSelected.shuffled_jetpac_enemies in settings.hard_mode_selected
+        proto.hard_mode.lower_max_refill_amounts = HardModeSelected.lower_max_refill_amounts in settings.hard_mode_selected
+        proto.hard_mode.strict_helm_timer = HardModeSelected.strict_helm_timer in settings.hard_mode_selected
+        proto.hard_mode.donk_in_the_dark_world = HardModeSelected.donk_in_the_dark_world in settings.hard_mode_selected
+        proto.hard_mode.donk_in_the_sky = HardModeSelected.donk_in_the_sky in settings.hard_mode_selected
+        proto.hard_mode.angry_caves = HardModeSelected.angry_caves in settings.hard_mode_selected
+        proto.hard_mode.fast_balloons = HardModeSelected.fast_balloons in settings.hard_mode_selected
+    
+    # Hard bosses
+    from randomizer.Enums.Settings import HardBossesSelected
+    if settings.hard_bosses_selected:
+        proto.hard_bosses.fast_mad_jack = HardBossesSelected.fast_mad_jack in settings.hard_bosses_selected
+        proto.hard_bosses.alternative_mad_jack_kongs = HardBossesSelected.alternative_mad_jack_kongs in settings.hard_bosses_selected
+        proto.hard_bosses.pufftoss_star_rando = HardBossesSelected.pufftoss_star_rando in settings.hard_bosses_selected
+        proto.hard_bosses.pufftoss_star_raised = HardBossesSelected.pufftoss_star_raised in settings.hard_bosses_selected
+        proto.hard_bosses.kut_out_phase_rando = HardBossesSelected.kut_out_phase_rando in settings.hard_bosses_selected
+        proto.hard_bosses.k_rool_toes_rando = HardBossesSelected.k_rool_toes_rando in settings.hard_bosses_selected
+        proto.hard_bosses.beta_lanky_phase = HardBossesSelected.beta_lanky_phase in settings.hard_bosses_selected
+    
+    proto.damage = settings.damage_amount
+
+
+def _populate_endgame_settings(settings, proto: endgame_settings_pb2.EndgameSettings):
+    """Populate EndgameSettings proto from Settings object."""
+    # Logic
+    proto.logic.type = settings.logic_type
+    if settings.glitches_selected:
+        proto.logic.glitches.extend([x.value if hasattr(x, 'value') else x for x in settings.glitches_selected])
+    if settings.tricks_selected:
+        proto.logic.tricks.extend([x.value if hasattr(x, 'value') else x for x in settings.tricks_selected])
+    
+    # Win Condition
+    proto.win_condition.type = settings.win_condition_item
+    proto.win_condition.quantity = settings.win_condition_count
+    proto.win_condition.spawns_ship = bool(settings.win_condition_spawns_ship)
+    
+    # Required Keys
+    proto.required_keys.random_quantity = bool(settings.select_keys)
+    proto.required_keys.specified_quantity = settings.krool_key_count
+    if settings.starting_keys_list_selected:
+        proto.required_keys.specified_starting_keys.extend([x.value if hasattr(x, 'value') else x for x in settings.starting_keys_list_selected])
+    proto.required_keys.helm_key_lock = bool(settings.key_8_helm)
+    proto.required_keys.key_8_required = bool(settings.k_rool_vanilla_requirement)
+    
+    # Starting Kongs
+    proto.starting_kongs.random_quantity = bool(settings.kong_rando)
+    proto.starting_kongs.specified_quantity = settings.starting_kongs_count
+    proto.starting_kongs.specified_starting_kong = settings.starting_kong
+    
+    # Helm Settings
+    proto.helm_settings.random_length = bool(settings.helm_barrels == 1)  # MinigameBarrels.random
+    proto.helm_settings.specified_length = settings.helm_setting if settings.helm_setting else 0
+    proto.helm_settings.shuffle_helm_rooms = bool(settings.helm_phase_order_rando)
+    proto.helm_settings.helm_start_location = settings.helm_setting
+    proto.helm_settings.helm_room_bonus_count = settings.helm_room_bonus_count
+    
+    # Helm door requirements
+    if settings.crown_door_item:
+        door_req = proto.helm_settings.helm_door_requirements.add()
+        door_req.type = settings.crown_door_item
+        door_req.specified_quantity = settings.crown_door_item_count
+    
+    # K.Rool Settings
+    proto.k_rool_settings.shuffle_k_rool_phases = bool(settings.krool_phase_order_rando)
+    proto.k_rool_settings.random_phase_amount = bool(settings.krool_random)
+    proto.k_rool_settings.specified_phase_amount = settings.krool_phase_count
+    proto.k_rool_settings.dk_phase_requires_blast = bool(settings.cannons_require_blast)
+    proto.k_rool_settings.chunky_phase_slam_requirement = settings.chunky_phase_slam_req
+
+
+def _populate_qol_settings(settings, proto: qol_settings_pb2.QualityOfLifeSettings):
+    """Populate QualityOfLifeSettings proto from Settings object."""    
+    from randomizer.Enums.Settings import MiscChangesSelected, CrownEnemyRando, MicrohintsEnabled
+    
+    # Basic boolean toggles
+    proto.tag_anywhere = bool(settings.enable_tag_anywhere)
+    proto.fast_warps = bool(settings.fast_warps)
+    proto.portal_numbers = bool(settings.portal_numbers)
+    proto.item_reward_previews = bool(settings.item_reward_previews)
+    proto.auto_key_turn_ins = bool(settings.auto_keys)
+    proto.warp_to_isles = bool(settings.warp_to_isles)
+    proto.shorten_boss_fights = bool(settings.shorten_boss)
+    proto.shop_indicator = bool(settings.shop_indicator)
+    proto.enemy_kill_crown_timer = bool(settings.enemy_kill_crown_timer != CrownEnemyRando.off)
+    proto.disable_racing_patches = bool(settings.disable_racing_patches)
+    proto.less_fragile_boulders = bool(settings.less_fragile_boulders)
+    
+    # Enum fields - proto enums are the source of truth
+    proto.cutscene_skips = settings.more_cutscene_skips
+    
+    # MiscChanges - check each enum value in misc_changes_selected list
+    proto.misc_changes.auto_dance_skip = MiscChangesSelected.auto_dance_skip in settings.misc_changes_selected
+    proto.misc_changes.fast_boot = MiscChangesSelected.fast_boot in settings.misc_changes_selected
+    proto.misc_changes.calm_caves = MiscChangesSelected.calm_caves in settings.misc_changes_selected
+    proto.misc_changes.animal_buddies_grab_items = MiscChangesSelected.animal_buddies_grab_items in settings.misc_changes_selected
+    proto.misc_changes.reduced_lag = MiscChangesSelected.reduced_lag in settings.misc_changes_selected
+    proto.misc_changes.remove_extraneous_cutscenes = MiscChangesSelected.remove_extraneous_cutscenes in settings.misc_changes_selected
+    proto.misc_changes.hint_textbox_hold = MiscChangesSelected.hint_textbox_hold in settings.misc_changes_selected
+    proto.misc_changes.remove_wrinkly_puzzles = MiscChangesSelected.remove_wrinkly_puzzles in settings.misc_changes_selected
+    proto.misc_changes.fast_picture_taking = MiscChangesSelected.fast_picture_taking in settings.misc_changes_selected
+    proto.misc_changes.hud_hotkey = MiscChangesSelected.hud_hotkey in settings.misc_changes_selected
+    proto.misc_changes.ammo_swap = MiscChangesSelected.ammo_swap in settings.misc_changes_selected
+    proto.misc_changes.homing_balloons = MiscChangesSelected.homing_balloons in settings.misc_changes_selected
+    proto.misc_changes.fast_transform_animation = MiscChangesSelected.fast_transform_animation in settings.misc_changes_selected
+    proto.misc_changes.troff_n_scoff_audio_indicator = MiscChangesSelected.troff_n_scoff_audio_indicator in settings.misc_changes_selected
+    proto.misc_changes.lowered_aztec_lobby_bonus = MiscChangesSelected.lowered_aztec_lobby_bonus in settings.misc_changes_selected
+    proto.misc_changes.quicker_galleon_star = MiscChangesSelected.quicker_galleon_star in settings.misc_changes_selected
+    proto.misc_changes.vanilla_bug_fixes = MiscChangesSelected.vanilla_bug_fixes in settings.misc_changes_selected
+    proto.misc_changes.save_k_rool_progress = MiscChangesSelected.save_k_rool_progress in settings.misc_changes_selected
+    proto.misc_changes.small_bananas_always_visible = MiscChangesSelected.small_bananas_always_visible in settings.misc_changes_selected
+    proto.misc_changes.fast_hints = MiscChangesSelected.fast_hints in settings.misc_changes_selected
+    proto.misc_changes.brighten_mad_maze_maul_enemies = MiscChangesSelected.brighten_mad_maze_maul_enemies in settings.misc_changes_selected
+    proto.misc_changes.raise_fungi_dirt_patch = MiscChangesSelected.raise_fungi_dirt_patch in settings.misc_changes_selected
+    proto.misc_changes.global_instrument = MiscChangesSelected.global_instrument in settings.misc_changes_selected
+    proto.misc_changes.fast_pause_transitions = MiscChangesSelected.fast_pause_transitions in settings.misc_changes_selected
+    proto.misc_changes.cannon_game_better_control = MiscChangesSelected.cannon_game_better_control in settings.misc_changes_selected
+    proto.misc_changes.better_fairy_camera = MiscChangesSelected.better_fairy_camera in settings.misc_changes_selected
+    proto.misc_changes.remove_enemy_cabin_timer = MiscChangesSelected.remove_enemy_cabin_timer in settings.misc_changes_selected
+    proto.misc_changes.remove_galleon_ship_timers = MiscChangesSelected.remove_galleon_ship_timers in settings.misc_changes_selected
+    proto.misc_changes.japes_bridge_permanently_extended = MiscChangesSelected.japes_bridge_permanently_extended in settings.misc_changes_selected
+    proto.misc_changes.move_spring_cabin_rocketbarrel = MiscChangesSelected.move_spring_cabin_rocketbarrel in settings.misc_changes_selected
+    
+    # HintSettings
+    proto.hints.wrinkly_hints = settings.wrinkly_hints
+    proto.hints.shop_hints = bool(settings.enable_shop_hints)
+    proto.hints.dim_solved_hints = bool(settings.dim_solved_hints)
+    proto.hints.no_joke_hints = bool(settings.serious_hints)
+    proto.hints.kongless_hint_doors = bool(settings.microhints_enabled != MicrohintsEnabled.off)
+    proto.hints.extra_hints = settings.microhints_enabled
+    
+    # Progressive hints
+    proto.hints.progressive_hints.item = settings.progressive_hint_item
+    proto.hints.progressive_hints.count_for_35th_hint = int(settings.progressive_hint_count)
+    
+    # Spoiler hints configuration
+    proto.hints.spoiler_hints.type = settings.spoiler_hints
+    proto.hints.spoiler_hints.include_woth_count = bool(settings.spoiler_include_woth_count)
+    proto.hints.spoiler_hints.include_level_order = bool(settings.spoiler_include_level_order)
+    
+    # Spoiler hints points
+    proto.hints.spoiler_hints.points.kongs = int(settings.points_list_kongs)
+    proto.hints.spoiler_hints.points.keys = int(settings.points_list_keys)
+    proto.hints.spoiler_hints.points.shopkeepers = int(settings.points_list_shopkeepers)
+    proto.hints.spoiler_hints.points.guns = int(settings.points_list_guns)
+    proto.hints.spoiler_hints.points.instruments = int(settings.points_list_instruments)
+    proto.hints.spoiler_hints.points.training_moves = int(settings.points_list_training_moves)
+    proto.hints.spoiler_hints.points.important_shared = int(settings.points_list_important_shared)
+    proto.hints.spoiler_hints.points.fairy_moves = int(settings.points_list_fairy_moves)
+    proto.hints.spoiler_hints.points.pad_moves = int(settings.points_list_pad_moves)
+    proto.hints.spoiler_hints.points.barrel_moves = int(settings.points_list_barrel_moves)
+    proto.hints.spoiler_hints.points.active_moves = int(settings.points_list_active_moves)
+    proto.hints.spoiler_hints.points.bean = int(settings.points_list_bean)
+
+
+def _populate_plandomizer_settings(settings, proto: plandomizer_settings_pb2.PlandomizerSettings):
+    """Populate PlandomizerSettings proto from Settings object."""
+    # Plandomizer uses a complex dictionary structure (settings.plandomizer_dict)
+    # Keys include: plando_starting_exit, plando_starting_kongs_selected, 
+    # plando_krool_order_N, plando_boss_order_N, plando_helm_order_N,
+    # plando_dirt_patches, plando_melon_crates, plando_battle_arenas, etc.
+    # 
+    # TODO: Implement plandomizer dictionary serialization
+    # This will require mapping the dictionary structure to the proto fields:
+    # - starting_exit: int -> optional int32
+    # - starting_kongs: list -> repeated KongId
+    # - place_* booleans
+    # - level_order, krool_order, boss_order, helm_order maps
+    # - item_assignments, minigame_assignments, hint_assignments, shop_assignments
+    # - custom_location_assignments (dirt patches, crates, arenas, kasplats, wrinkly, tns)
+    pass
+
+
+# Helper functions to apply proto messages to Settings
+def _apply_item_settings(proto: item_settings_pb2.ItemSettings, settings):
+    """Apply ItemSettings proto to Settings object."""
+    # Decouple item rando
+    settings.decouple_item_rando = bool(proto.decouple_item_rando)
+    
+    # ItemPool - restore each pool to its corresponding list (preserves exact distribution)
+    # Clear all individual lists first
+    for i in range(10):
+        setattr(settings, f"item_rando_list_{i}", [])
+    
+    # Apply each pool to its corresponding list
+    for i, pool in enumerate(proto.pools):
+        if i >= 10:
+            break  # Safety check - only process up to 10 lists
+        
+        # Combine items and checks from this pool
+        pool_items = list(pool.items) + list(pool.checks)
+        setattr(settings, f"item_rando_list_{i}", pool_items)
+    
+    # StartingMovePool - extract multiple pools (restores each pool to its corresponding list)
+    # Write to individual starting_moves_list_1 through _5 fields (not the combined lists)
+    # Convert integer values back to Items enum objects
+    from randomizer.Enums.Items import Items
+    for i, move_pool in enumerate(proto.starting_move_pools):
+        if i >= 5:
+            break  # Safety check - only process up to 5 lists
+        
+        list_index = i + 1  # Convert 0-based to 1-based (starting_moves_list_1, _2, etc.)
+        move_list = list(move_pool.items)
+        
+        # Convert integer values back to Items enum objects
+        enum_list = []
+        for item_value in move_list:
+            try:
+                enum_obj = Items(item_value)
+                enum_list.append(enum_obj)
+            except ValueError:
+                # If conversion fails, keep the integer value
+                enum_list.append(item_value)
+        
+        setattr(settings, f"starting_moves_list_{list_index}", enum_list)
+        setattr(settings, f"starting_moves_list_count_{list_index}", move_pool.count_given)
+    
+    # Filler items
+    settings.filler_items_selected = list(proto.filler_items)
+    
+    # Ice trap settings
+    settings.ice_trap_count = proto.ice_traps.count
+    settings.ice_trap_model_v2 = proto.ice_traps.model
+    settings.trap_weight_bubble = proto.ice_traps.weights.bubble
+    settings.trap_weight_reverse = proto.ice_traps.weights.reverse
+    settings.trap_weight_slow = proto.ice_traps.weights.slow
+    settings.trap_weight_disablea = proto.ice_traps.weights.disable_a
+    settings.trap_weight_disableb = proto.ice_traps.weights.disable_b
+    settings.trap_weight_disablez = proto.ice_traps.weights.disable_z
+    settings.trap_weight_disablecu = proto.ice_traps.weights.disable_c_up
+    settings.trap_weight_getout = proto.ice_traps.weights.get_out
+    settings.trap_weight_dry = proto.ice_traps.weights.dry
+    settings.trap_weight_flip = proto.ice_traps.weights.flip
+    settings.trap_weight_icefloor = proto.ice_traps.weights.ice_floor
+    settings.trap_weight_paper = proto.ice_traps.weights.paper
+    settings.trap_weight_slip = proto.ice_traps.weights.slip
+    settings.trap_weight_animal = proto.ice_traps.weights.animal
+    settings.trap_weight_rockfall = proto.ice_traps.weights.rockfall
+    settings.trap_weight_disabletag = proto.ice_traps.weights.disable_tag
+    
+    # Item counts
+    settings.total_gbs = proto.item_counts.golden_bananas
+    settings.total_medals = proto.item_counts.banana_medals
+    settings.total_fairies = proto.item_counts.banana_fairies
+    settings.total_crowns = proto.item_counts.battle_crowns
+    settings.total_rainbow_coins = proto.item_counts.rainbow_coins
+    settings.total_pearls = proto.item_counts.pearls
+    
+    # Max snide reward requirement
+    settings.most_snide_rewards = proto.max_snide_reward_requirement
+
+
+def _apply_requirement_settings(proto: requirement_settings_pb2.RequirementSettings, settings):
+    """Apply RequirementSettings proto to Settings object."""
+    # B Locker option
+    settings.blocker_selection_behavior = proto.b_locker_option.opt
+    settings.BLockerEntryCount = list(proto.b_locker_option.amounts)
+    settings.blocker_max = proto.b_locker_option.maximum
+    settings.maximize_helm_blocker = bool(proto.maximize_helm_b_locker)
+    
+    # Troff'n'Scoff option
+    settings.tns_selection_behavior = proto.tns_option.opt
+    settings.BossBananas = list(proto.tns_option.amounts)
+    settings.troff_max = proto.tns_option.maximum
+    
+    # Medals for Jetpac
+    settings.medal_jetpac_behavior = proto.medals_for_jetpac.opt
+    settings.medal_requirement = proto.medals_for_jetpac.selected_quantity
+    
+    # Pearls for Mermaid
+    settings.pearl_mermaid_behavior = proto.pearls_for_mermaid.opt
+    settings.mermaid_gb_pearls = proto.pearls_for_mermaid.selected_quantity
+    
+    # Fairies for Fairy Queen
+    settings.fairy_queen_behavior = proto.fairies_for_fairy_queen.opt
+    settings.rareware_gb_fairies = proto.fairies_for_fairy_queen.selected_quantity
+    
+    # CBs for Medal
+    settings.cb_medal_behavior_new = proto.cbs_for_medal.opt
+    settings.medal_cb_req = proto.cbs_for_medal.selected_quantity
+    
+    # Open lobbies
+    settings.open_lobbies = bool(proto.open_lobbies)
+    
+    # Switchsanity - only tracking enabled state for now
+    if proto.HasField('switchsanity'):
+        settings.switchsanity_enabled = bool(proto.switchsanity.enabled)
+    
+    # Smaller shops
+    settings.smaller_shops = bool(proto.smaller_shops)
+    
+    # Tooie style shops and free trade agreement
+    settings.shops_dont_cost = bool(proto.tooie_style_shops)
+    settings.free_trade_setting = bool(proto.free_trade_agreement)
+    
+    # Removed barriers
+    settings.remove_barriers_selected = list(proto.removed_barriers)
+    
+    # Galleon water
+    settings.galleon_water = proto.galleon_water
+    
+    # Fungi time
+    settings.fungi_time = proto.fungi_time
+    
+    # Shop prices
+    settings.random_prices = proto.shop_prices
+    
+    # Activate bananaports
+    settings.activate_all_bananaports = proto.activate_bananaports
+    
+    # Faster checks
+    settings.faster_checks_selected = list(proto.faster_checks)
+    
+    # Puzzle rando
+    settings.puzzle_rando_difficulty = proto.puzzle_rando
+
+
+def _apply_overworld_settings(proto: overworld_settings_pb2.OverworldSettings, settings):
+    """Apply OverworldSettings proto to Settings object."""
+    # World Navigation
+    settings.level_randomization = proto.entrance_randomizer
+    settings.shuffle_helm_location = bool(proto.shuffle_helm_location)
+    settings.bananaport_rando = proto.cross_map_bananaports
+    settings.random_starting_region_new = proto.random_starting_region
+    
+    # Kong models
+    settings.kong_model_dk = proto.kong_models.dk_model
+    settings.kong_model_diddy = proto.kong_models.diddy_model
+    settings.kong_model_lanky = proto.kong_models.lanky_model
+    settings.kong_model_tiny = proto.kong_models.tiny_model
+    settings.kong_model_chunky = proto.kong_models.chunky_model
+    settings.kong_model_mode = proto.kong_models.mode
+    
+    # Location Randomizers
+    settings.coin_rando = bool(proto.banana_coin_randomizer)
+    settings.crown_placement_rando = bool(proto.battle_crown_randomizer)
+    settings.race_coin_rando = bool(proto.race_coin_randomizer)
+    settings.randomize_pickups = bool(proto.randomize_pickups)
+    settings.shuffle_shops = bool(proto.shuffle_shop_locations)
+    
+    # CB randomizer
+    settings.cb_rando_enabled = bool(proto.cb_randomizer.enabled)
+    settings.cb_rando_list_selected = list(proto.cb_randomizer.cb_randomized_levels)
+    
+    settings.kasplat_rando_setting = proto.kasplat_randomizer
+    
+    # Bananaport randomizer
+    settings.bananaport_placement_rando = proto.bananaport_randomizer.opt
+    
+    settings.wrinkly_location_rando = bool(proto.wrinky_door_randomizer)
+    settings.tns_location_rando = bool(proto.tns_portal_randomizer)
+    settings.vanilla_door_rando = bool(proto.vanilla_door_shuffle)
+    settings.dos_door_rando = bool(proto.dos_doors)
+    settings.dk_portal_location_rando_v2 = proto.dk_portal_randomizer
+    
+    # Bosses
+    settings.boss_location_rando = bool(proto.shuffle_boss_location)
+    settings.krool_in_boss_pool_v2 = proto.krool_in_boss_pool
+    settings.boss_maps = list(proto.bosses_selected)
+    
+    # Enemies
+    settings.enemies_selected = list(proto.shuffled_enemies)
+    settings.crown_enemy_difficulty = proto.crown_enemies
+    settings.enemy_speed_rando = bool(proto.random_enemy_speed)
+    settings.randomize_enemy_sizes = bool(proto.random_enemy_size)
+    
+    # Bonus Barrels
+    settings.minigames_list_selected = list(proto.shuffled_bonus_barrels)
+    settings.disable_hard_minigames = bool(proto.disable_hard_minigames)
+    settings.bonus_barrel_auto_complete = bool(proto.auto_complete_bonus_barrels)
+    settings.alt_minecart_mayhem = bool(proto.alternate_minecart_mayhem)
+    
+    # Difficulty
+    settings.no_healing = bool(proto.no_heals)
+    settings.no_melons = bool(proto.no_melon_slice_drops)
+    settings.ice_traps_damage = bool(proto.ice_traps_damage_player)
+    settings.mirror_mode = bool(proto.mirror_mode)
+    settings.disable_tag_barrels = bool(proto.tag_barrels_disabled)
+    
+    # Helm Hurry
+    settings.helm_hurry = bool(proto.helm_hurry_mode.enabled)
+    if settings.helm_hurry:
+        settings.helmhurry_list_starting_time = proto.helm_hurry_mode.starting_time
+        settings.helmhurry_list_golden_banana = proto.helm_hurry_mode.golden_banana_time
+        settings.helmhurry_list_blueprint = proto.helm_hurry_mode.blueprint_time
+        settings.helmhurry_list_company_coins = proto.helm_hurry_mode.company_coin_time
+        settings.helmhurry_list_move = proto.helm_hurry_mode.move_time
+        settings.helmhurry_list_banana_medal = proto.helm_hurry_mode.banana_medal_time
+        settings.helmhurry_list_rainbow_coin = proto.helm_hurry_mode.rainbow_coin_time
+        settings.helmhurry_list_boss_key = proto.helm_hurry_mode.boss_key_time
+        settings.helmhurry_list_battle_crown = proto.helm_hurry_mode.battle_crown_time
+        settings.helmhurry_list_bean = proto.helm_hurry_mode.bean_time
+        settings.helmhurry_list_pearl = proto.helm_hurry_mode.pearl_time
+        settings.helmhurry_list_kongs = proto.helm_hurry_mode.kong_time
+        settings.helmhurry_list_fairy = proto.helm_hurry_mode.fairy_time
+        settings.helmhurry_list_colored_bananas = proto.helm_hurry_mode.cb_time
+        settings.helmhurry_list_ice_traps = proto.helm_hurry_mode.trap_time
+    
+    settings.no_consumable_upgrades = bool(proto.no_consumable_upgrades)
+    
+    # Hard mode - rebuild list from booleans
+    from randomizer.Enums.Settings import HardModeSelected
+    settings.hard_mode_selected = []
+    if proto.hard_mode.hard_enemies:
+        settings.hard_mode_selected.append(HardModeSelected.hard_enemies)
+    if proto.hard_mode.water_is_lava:
+        settings.hard_mode_selected.append(HardModeSelected.water_is_lava)
+    if proto.hard_mode.reduced_fall_damage_threshold:
+        settings.hard_mode_selected.append(HardModeSelected.reduced_fall_damage_threshold)
+    if proto.hard_mode.shuffled_jetpac_enemies:
+        settings.hard_mode_selected.append(HardModeSelected.shuffled_jetpac_enemies)
+    if proto.hard_mode.lower_max_refill_amounts:
+        settings.hard_mode_selected.append(HardModeSelected.lower_max_refill_amounts)
+    if proto.hard_mode.strict_helm_timer:
+        settings.hard_mode_selected.append(HardModeSelected.strict_helm_timer)
+    if proto.hard_mode.donk_in_the_dark_world:
+        settings.hard_mode_selected.append(HardModeSelected.donk_in_the_dark_world)
+    if proto.hard_mode.donk_in_the_sky:
+        settings.hard_mode_selected.append(HardModeSelected.donk_in_the_sky)
+    if proto.hard_mode.angry_caves:
+        settings.hard_mode_selected.append(HardModeSelected.angry_caves)
+    if proto.hard_mode.fast_balloons:
+        settings.hard_mode_selected.append(HardModeSelected.fast_balloons)
+    
+    # Hard bosses - rebuild list from booleans
+    from randomizer.Enums.Settings import HardBossesSelected
+    settings.hard_bosses_selected = []
+    if proto.hard_bosses.fast_mad_jack:
+        settings.hard_bosses_selected.append(HardBossesSelected.fast_mad_jack)
+    if proto.hard_bosses.alternative_mad_jack_kongs:
+        settings.hard_bosses_selected.append(HardBossesSelected.alternative_mad_jack_kongs)
+    if proto.hard_bosses.pufftoss_star_rando:
+        settings.hard_bosses_selected.append(HardBossesSelected.pufftoss_star_rando)
+    if proto.hard_bosses.pufftoss_star_raised:
+        settings.hard_bosses_selected.append(HardBossesSelected.pufftoss_star_raised)
+    if proto.hard_bosses.kut_out_phase_rando:
+        settings.hard_bosses_selected.append(HardBossesSelected.kut_out_phase_rando)
+    if proto.hard_bosses.k_rool_toes_rando:
+        settings.hard_bosses_selected.append(HardBossesSelected.k_rool_toes_rando)
+    if proto.hard_bosses.beta_lanky_phase:
+        settings.hard_bosses_selected.append(HardBossesSelected.beta_lanky_phase)
+    
+    settings.damage_amount = proto.damage
+
+
+def _apply_endgame_settings(proto: endgame_settings_pb2.EndgameSettings, settings):
+    """Apply EndgameSettings proto to Settings object."""
+    # Logic
+    settings.logic_type = proto.logic.type
+    settings.glitches_selected = list(proto.logic.glitches)
+    settings.tricks_selected = list(proto.logic.tricks)
+    
+    # Win Condition
+    settings.win_condition_item = proto.win_condition.type
+    settings.win_condition_count = proto.win_condition.quantity
+    settings.win_condition_spawns_ship = bool(proto.win_condition.spawns_ship)
+    
+    # Required Keys
+    settings.select_keys = bool(proto.required_keys.random_quantity)
+    settings.krool_key_count = proto.required_keys.specified_quantity
+    settings.starting_keys_list_selected = list(proto.required_keys.specified_starting_keys)
+    settings.key_8_helm = bool(proto.required_keys.helm_key_lock)
+    settings.k_rool_vanilla_requirement = bool(proto.required_keys.key_8_required)
+    
+    # Starting Kongs
+    settings.kong_rando = bool(proto.starting_kongs.random_quantity)
+    settings.starting_kongs_count = proto.starting_kongs.specified_quantity
+    settings.starting_kong = proto.starting_kongs.specified_starting_kong
+    
+    # Helm Settings
+    if proto.helm_settings.random_length:
+        settings.helm_barrels = 1  # MinigameBarrels.random
+    # helm_setting serves dual purpose: specified_length and helm_start_location use the same value
+    settings.helm_setting = proto.helm_settings.helm_start_location if proto.helm_settings.helm_start_location else proto.helm_settings.specified_length
+    settings.helm_phase_order_rando = bool(proto.helm_settings.shuffle_helm_rooms)
+    settings.helm_room_bonus_count = proto.helm_settings.helm_room_bonus_count
+    
+    # Helm door requirements
+    if proto.helm_settings.helm_door_requirements:
+        door_req = proto.helm_settings.helm_door_requirements[0]
+        settings.crown_door_item = door_req.type
+        settings.crown_door_item_count = door_req.specified_quantity
+    
+    # K.Rool Settings
+    settings.krool_phase_order_rando = bool(proto.k_rool_settings.shuffle_k_rool_phases)
+    settings.krool_random = bool(proto.k_rool_settings.random_phase_amount)
+    settings.chunky_phase_slam_req = proto.k_rool_settings.chunky_phase_slam_requirement
+
+
+def _apply_qol_settings(proto: qol_settings_pb2.QualityOfLifeSettings, settings):
+    """Apply QualityOfLifeSettings proto to Settings object."""
+    from randomizer.Enums.Settings import MiscChangesSelected, CrownEnemyRando, MicrohintsEnabled
+    
+    # Basic boolean toggles
+    settings.enable_tag_anywhere = bool(proto.tag_anywhere)
+    settings.fast_warps = bool(proto.fast_warps)
+    settings.portal_numbers = bool(proto.portal_numbers)
+    settings.item_reward_previews = bool(proto.item_reward_previews)
+    settings.auto_keys = bool(proto.auto_key_turn_ins)
+    settings.warp_to_isles = bool(proto.warp_to_isles)
+    settings.shorten_boss = bool(proto.shorten_boss_fights)
+    settings.shop_indicator = bool(proto.shop_indicator)
+    settings.disable_racing_patches = bool(proto.disable_racing_patches)
+    settings.less_fragile_boulders = bool(proto.less_fragile_boulders)
+    
+    # Enemy kill crown timer - reverse the check
+    settings.enemy_kill_crown_timer = bool(proto.enemy_kill_crown_timer)
+    
+    # Enum fields
+    settings.more_cutscene_skips = proto.cutscene_skips
+    
+    # MiscChanges - rebuild list from booleans
+    settings.misc_changes_selected = []
+    if proto.misc_changes.auto_dance_skip:
+        settings.misc_changes_selected.append(MiscChangesSelected.auto_dance_skip)
+    if proto.misc_changes.fast_boot:
+        settings.misc_changes_selected.append(MiscChangesSelected.fast_boot)
+    if proto.misc_changes.calm_caves:
+        settings.misc_changes_selected.append(MiscChangesSelected.calm_caves)
+    if proto.misc_changes.animal_buddies_grab_items:
+        settings.misc_changes_selected.append(MiscChangesSelected.animal_buddies_grab_items)
+    if proto.misc_changes.reduced_lag:
+        settings.misc_changes_selected.append(MiscChangesSelected.reduced_lag)
+    if proto.misc_changes.remove_extraneous_cutscenes:
+        settings.misc_changes_selected.append(MiscChangesSelected.remove_extraneous_cutscenes)
+    if proto.misc_changes.hint_textbox_hold:
+        settings.misc_changes_selected.append(MiscChangesSelected.hint_textbox_hold)
+    if proto.misc_changes.remove_wrinkly_puzzles:
+        settings.misc_changes_selected.append(MiscChangesSelected.remove_wrinkly_puzzles)
+    if proto.misc_changes.fast_picture_taking:
+        settings.misc_changes_selected.append(MiscChangesSelected.fast_picture_taking)
+    if proto.misc_changes.hud_hotkey:
+        settings.misc_changes_selected.append(MiscChangesSelected.hud_hotkey)
+    if proto.misc_changes.ammo_swap:
+        settings.misc_changes_selected.append(MiscChangesSelected.ammo_swap)
+    if proto.misc_changes.homing_balloons:
+        settings.misc_changes_selected.append(MiscChangesSelected.homing_balloons)
+    if proto.misc_changes.fast_transform_animation:
+        settings.misc_changes_selected.append(MiscChangesSelected.fast_transform_animation)
+    if proto.misc_changes.troff_n_scoff_audio_indicator:
+        settings.misc_changes_selected.append(MiscChangesSelected.troff_n_scoff_audio_indicator)
+    if proto.misc_changes.lowered_aztec_lobby_bonus:
+        settings.misc_changes_selected.append(MiscChangesSelected.lowered_aztec_lobby_bonus)
+    if proto.misc_changes.quicker_galleon_star:
+        settings.misc_changes_selected.append(MiscChangesSelected.quicker_galleon_star)
+    if proto.misc_changes.vanilla_bug_fixes:
+        settings.misc_changes_selected.append(MiscChangesSelected.vanilla_bug_fixes)
+    if proto.misc_changes.save_k_rool_progress:
+        settings.misc_changes_selected.append(MiscChangesSelected.save_k_rool_progress)
+    if proto.misc_changes.small_bananas_always_visible:
+        settings.misc_changes_selected.append(MiscChangesSelected.small_bananas_always_visible)
+    if proto.misc_changes.fast_hints:
+        settings.misc_changes_selected.append(MiscChangesSelected.fast_hints)
+    if proto.misc_changes.brighten_mad_maze_maul_enemies:
+        settings.misc_changes_selected.append(MiscChangesSelected.brighten_mad_maze_maul_enemies)
+    if proto.misc_changes.raise_fungi_dirt_patch:
+        settings.misc_changes_selected.append(MiscChangesSelected.raise_fungi_dirt_patch)
+    if proto.misc_changes.global_instrument:
+        settings.misc_changes_selected.append(MiscChangesSelected.global_instrument)
+    if proto.misc_changes.fast_pause_transitions:
+        settings.misc_changes_selected.append(MiscChangesSelected.fast_pause_transitions)
+    if proto.misc_changes.cannon_game_better_control:
+        settings.misc_changes_selected.append(MiscChangesSelected.cannon_game_better_control)
+    if proto.misc_changes.better_fairy_camera:
+        settings.misc_changes_selected.append(MiscChangesSelected.better_fairy_camera)
+    if proto.misc_changes.remove_enemy_cabin_timer:
+        settings.misc_changes_selected.append(MiscChangesSelected.remove_enemy_cabin_timer)
+    if proto.misc_changes.remove_galleon_ship_timers:
+        settings.misc_changes_selected.append(MiscChangesSelected.remove_galleon_ship_timers)
+    if proto.misc_changes.japes_bridge_permanently_extended:
+        settings.misc_changes_selected.append(MiscChangesSelected.japes_bridge_permanently_extended)
+    if proto.misc_changes.move_spring_cabin_rocketbarrel:
+        settings.misc_changes_selected.append(MiscChangesSelected.move_spring_cabin_rocketbarrel)
+    
+    # HintSettings
+    settings.wrinkly_hints = proto.hints.wrinkly_hints
+    settings.enable_shop_hints = bool(proto.hints.shop_hints)
+    settings.dim_solved_hints = bool(proto.hints.dim_solved_hints)
+    settings.serious_hints = bool(proto.hints.no_joke_hints)
+    settings.microhints_enabled = proto.hints.extra_hints
+    
+    # Progressive hints
+    settings.progressive_hint_item = proto.hints.progressive_hints.item
+    settings.progressive_hint_count = int(proto.hints.progressive_hints.count_for_35th_hint)
+    
+    # Spoiler hints configuration
+    settings.spoiler_hints = proto.hints.spoiler_hints.type
+    settings.spoiler_include_woth_count = bool(proto.hints.spoiler_hints.include_woth_count)
+    settings.spoiler_include_level_order = bool(proto.hints.spoiler_hints.include_level_order)
+    
+    # Spoiler hints points
+    settings.points_list_kongs = int(proto.hints.spoiler_hints.points.kongs)
+    settings.points_list_keys = int(proto.hints.spoiler_hints.points.keys)
+    settings.points_list_shopkeepers = int(proto.hints.spoiler_hints.points.shopkeepers)
+    settings.points_list_guns = int(proto.hints.spoiler_hints.points.guns)
+    settings.points_list_instruments = int(proto.hints.spoiler_hints.points.instruments)
+    settings.points_list_training_moves = int(proto.hints.spoiler_hints.points.training_moves)
+    settings.points_list_important_shared = int(proto.hints.spoiler_hints.points.important_shared)
+    settings.points_list_fairy_moves = int(proto.hints.spoiler_hints.points.fairy_moves)
+    settings.points_list_pad_moves = int(proto.hints.spoiler_hints.points.pad_moves)
+    settings.points_list_barrel_moves = int(proto.hints.spoiler_hints.points.barrel_moves)
+    settings.points_list_active_moves = int(proto.hints.spoiler_hints.points.active_moves)
+    settings.points_list_bean = int(proto.hints.spoiler_hints.points.bean)
+
+
+def _apply_plandomizer_settings(proto: plandomizer_settings_pb2.PlandomizerSettings, settings):
+    """Apply PlandomizerSettings proto to Settings object."""
+    # TODO: Map proto fields to settings attributes
+    pass
diff --git a/randomizer/SettingStrings.py b/randomizer/SettingStrings.py
deleted file mode 100644
index feb9be7b6..000000000
--- a/randomizer/SettingStrings.py
+++ /dev/null
@@ -1,423 +0,0 @@
-"""Encryption and Decryption of settings strings."""
-
-from __future__ import annotations
-
-from typing import Any, Dict, Tuple
-
-from randomizer.Enums.Settings import (
-    LogicType,
-    SettingsStringDataType,
-    SettingsStringEnum,
-    SettingsStringIntRangeMap,
-    SettingsStringListTypeMap,
-    SettingsStringTypeMap,
-    SpoilerHints,
-)
-
-letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
-index_to_letter = {i: letters[i] for i in range(64)}
-letter_to_index = {letters[i]: i for i in range(len(letters))}
-
-
-def int_to_bin_string(num, bytesize):
-    """Convert an integer to a binary representation.
-
-    This function is needed to handle negative numbers.
-    """
-    return format(num if num >= 0 else (1 << bytesize) + num, f"0{bytesize}b").zfill(bytesize)
-
-
-def bin_string_to_int(bin_str: str, bytesize: int) -> int:
-    """Convert a binary string to an integer.
-
-    This function is needed to handle negative numbers.
-    """
-    if bin_str[0] == "1":
-        return int(bin_str, 2) - (1 << bytesize)
-    else:
-        return int(bin_str, 2)
-
-
-def get_var_int_encode_details(settingEnum: SettingsStringEnum) -> Tuple[int, bool]:
-    """Return key information needed to encode/decode a given var_int setting.
-
-    Returns:
-        int - The bit length of the int.
-        bool - True if negative numbers are possible.
-    """
-    range = SettingsStringIntRangeMap[settingEnum]
-    max_val = range["max"]
-    min_val = range["min"]
-    limiting_val = max_val
-    negatives_possible = min_val < 0
-    if negatives_possible and abs(min_val) > max_val:
-        # We subtract one, to handle the edge case where the absolute value is
-        # a negative power of 2.
-        limiting_val = abs(min_val) - 1
-    # Get the bit length of the limiting value.
-    bit_len = limiting_val.bit_length()
-    # If negatives are possible, add one to the bit length.
-    if negatives_possible:
-        bit_len += 1
-    return bit_len, negatives_possible
-
-
-def encode_var_int(settingEnum, num):
-    """Convert a variable-size integer to a binary representation."""
-    bit_len, _ = get_var_int_encode_details(settingEnum)
-    return int_to_bin_string(num, bit_len)
-
-
-def decode_var_int(settingEnum: SettingsStringEnum, bin_str: str) -> int:
-    """Convert a binary string to a variable-size integer."""
-    bit_len, negatives_possible = get_var_int_encode_details(settingEnum)
-    if negatives_possible:
-        return bin_string_to_int(bin_str, bit_len)
-    else:
-        return int(bin_str, 2)
-
-
-# A map tying certain key settings to other settings that should be excluded
-# from the string, if the key setting has a certain value.
-settingsExclusionMap = {
-    "helm_hurry": {
-        False: [
-            "helmhurry_list_banana_medal",
-            "helmhurry_list_battle_crown",
-            "helmhurry_list_bean",
-            "helmhurry_list_blueprint",
-            "helmhurry_list_boss_key",
-            "helmhurry_list_colored_bananas",
-            "helmhurry_list_company_coins",
-            "helmhurry_list_fairies",
-            "helmhurry_list_golden_banana",
-            "helmhurry_list_ice_traps",
-            "helmhurry_list_kongs",
-            "helmhurry_list_move",
-            "helmhurry_list_pearl",
-            "helmhurry_list_rainbow_coin",
-            "helmhurry_list_starting_time",
-        ]
-    },
-    "shuffle_items": {False: ["item_rando_list_selected"]},
-    "cb_rando_enabled": {False: ["cb_rando_list_selected"]},
-    "logic_type": {LogicType.glitchless: ["glitches_selected"], LogicType.nologic: ["glitches_selected"], LogicType.minimal: ["glitches_selected"]},
-    "spoiler_hints": {
-        SpoilerHints.off: [
-            "points_list_kongs"
-            "points_list_keys"
-            "points_list_guns"
-            "points_list_instruments"
-            "points_list_training_moves"
-            "points_list_fairy_moves"
-            "points_list_important_shared"
-            "points_list_pad_moves"
-            "points_list_barrel_moves"
-            "points_list_active_moves"
-            "points_list_bean"
-            "points_list_shopkeepers"
-        ],
-        SpoilerHints.vial_colors: [
-            "points_list_kongs"
-            "points_list_keys"
-            "points_list_guns"
-            "points_list_instruments"
-            "points_list_training_moves"
-            "points_list_fairy_moves"
-            "points_list_important_shared"
-            "points_list_pad_moves"
-            "points_list_barrel_moves"
-            "points_list_active_moves"
-            "points_list_bean"
-            "points_list_shopkeepers"
-        ],
-    },
-}
-
-
-def prune_settings(settings_dict: dict):
-    """Remove certain settings based on the values of other settings."""
-    settings_to_remove = ["plandomizer_data", "enable_song_select", "music_selections"]
-    # Remove settings based on the exclusion map above.
-    for keySetting, exclusions in settingsExclusionMap.items():
-        if keySetting in settings_dict.keys() and settings_dict[keySetting] in exclusions:
-            settings_to_remove.extend(exclusions[settings_dict[keySetting]])
-    # Remove any deprecated settings.
-    for pop in settings_to_remove:
-        if pop in settings_dict:
-            settings_dict.pop(pop)
-    return settings_dict
-
-
-def encrypt_settings_string_enum(dict_data: dict):
-    """Take a dictionary and return an enum-based encrypted string.
-
-    Args:
-        dict_data (dict): Posted JSON data from the form.
-
-    Returns:
-        str: Returns an encrypted string.
-    """
-    for pop in [
-        "download_patch_file",
-        "load_patch_file",
-        "seed",
-        "settings_string",
-        "chunky_main_colors",
-        "chunky_main_custom_color",
-        "chunky_other_colors",
-        "chunky_other_custom_color",
-        "diddy_clothes_colors",
-        "diddy_clothes_custom_color",
-        "dk_fur_colors",
-        "dk_fur_custom_color",
-        "dk_tie_colors",
-        "dk_tie_custom_color",
-        "enguarde_skin_colors",
-        "enguarde_skin_custom_color",
-        "klaptrap_model",
-        "random_models",
-        "random_enemy_colors",
-        "misc_cosmetics",
-        "disco_donkey",
-        "disco_chunky",
-        "rainbow_ammo",
-        "dark_mode_textboxes",
-        "pause_hint_coloring",
-        "lanky_clothes_colors",
-        "lanky_fur_colors",
-        "lanky_clothes_custom_color",
-        "lanky_fur_custom_color",
-        "rambi_skin_colors",
-        "rambi_skin_custom_color",
-        "gb_colors",
-        "gb_custom_color",
-        "random_kong_colors",
-        "random_music",
-        "music_is_custom",
-        "music_bgm_randomized",
-        "music_events_randomized",
-        "music_majoritems_randomized",
-        "music_minoritems_randomized",
-        "music_vanilla_locations",
-        "tiny_hair_colors",
-        "tiny_clothes_colors",
-        "tiny_hair_custom_color",
-        "tiny_clothes_custom_color",
-        "override_cosmetics",
-        "remove_water_oscillation",
-        "fps_display",
-        "head_balloons",
-        "song_speed_near_win",
-        "disable_flavor_text",
-        "colorblind_mode",
-        "big_head_mode",
-        "search",
-        "holiday_setting",
-        "holiday_setting_offseason",
-        "homebrew_header",
-        "homebrew_header_patch",
-        "dpad_display",
-        "camera_is_follow",
-        "sfx_volume",
-        "music_volume",
-        "true_widescreen",
-        "anamorphic_widescreen",
-        "camera_is_not_inverted",
-        "sound_type",
-        "smoother_camera",
-        "songs_excluded",
-        "excluded_songs_selected",
-        "random_colors",
-        "random_colors_selected",
-        "music_filtering",
-        "music_filtering_selected",
-        "troff_brighten",
-        "better_dirt_patch_cosmetic",
-        "crosshair_outline",
-        "custom_music_proportion",
-        "fill_with_custom_music",
-        "pool_tracks",
-        "color_coded_powerups",
-        "show_song_name",
-        "delayed_spoilerlog_release",
-        "shockwave_status",  # Deprecated with starting move selector rework - this is now derived in the settings constructor
-        "music_disable_reverb",
-        "isles_cool_musical",
-        "archipelago",
-        "bonus_barrel_rando",  # Deprecated with dropdown multiselector rework
-        "hard_mode",  # Deprecated with dropdown multiselector rework
-        "hard_bosses",  # Deprecated with dropdown multiselector rework
-        "quality_of_life",  # Deprecated with dropdown multiselector rework
-        "enemy_rando",  # Deprecated with dropdown multiselector rework
-        "faster_checks_enabled",  # Deprecated with dropdown multiselector rework
-        "remove_barriers_enabled",  # Deprecated with dropdown multiselector rework
-        "",
-    ]:
-        if pop in dict_data:
-            dict_data.pop(pop)
-    dict_data = prune_settings(dict_data)
-    bitstring = ""
-    for sort_this in ["starting_moves_list_1", "starting_moves_list_2", "starting_moves_list_3", "starting_moves_list_4", "starting_moves_list_5"]:
-        if sort_this in dict_data.keys():
-            dict_data[sort_this].sort()
-    for key in dict_data:
-        value = dict_data[key]
-        # At this time, all strings represent ints, so just convert.
-        if isinstance(value, str):
-            value = int(value)
-        key_enum = SettingsStringEnum[key]
-        key_data_type = SettingsStringTypeMap[key_enum]
-        # Encode the key.
-        key_size = max([member.value for member in SettingsStringEnum]).bit_length()
-        bitstring += bin(key_enum)[2:].zfill(key_size)
-        if key_data_type == SettingsStringDataType.bool:
-            bitstring += "1" if value else "0"
-        elif key_data_type == SettingsStringDataType.int4:
-            bitstring += int_to_bin_string(value, 4)
-        elif key_data_type in (SettingsStringDataType.int8, SettingsStringDataType.u8):
-            bitstring += int_to_bin_string(value, 8)
-        elif key_data_type in (SettingsStringDataType.int16, SettingsStringDataType.u16):
-            bitstring += int_to_bin_string(value, 16)
-        elif key_data_type == SettingsStringDataType.var_int:
-            bitstring += encode_var_int(key_enum, value)
-        elif key_data_type == SettingsStringDataType.list:
-            bitstring += f"{len(value):08b}"
-            key_list_data_type = SettingsStringListTypeMap[key_enum]
-            for item in value:
-                if isinstance(item, str):
-                    item = int(item)
-                if key_list_data_type == SettingsStringDataType.bool:
-                    bitstring += "1" if item else "0"
-                elif key_list_data_type == SettingsStringDataType.int4:
-                    bitstring += int_to_bin_string(item, 4)
-                elif key_list_data_type in (SettingsStringDataType.int8, SettingsStringDataType.u8):
-                    bitstring += int_to_bin_string(item, 8)
-                elif key_list_data_type in (SettingsStringDataType.int16, SettingsStringDataType.u16):
-                    bitstring += int_to_bin_string(item, 16)
-                elif key_list_data_type == SettingsStringDataType.var_int:
-                    bitstring += encode_var_int(key_enum, item)
-                else:
-                    # The value is an enum.
-                    max_value = max([member.value for member in key_list_data_type])
-                    bitstring += format(item, f"0{max_value.bit_length()}b")
-        else:
-            # The value is an enum.
-            max_value = max([member.value for member in key_data_type])
-            # If value is an int
-            if isinstance(value, int):
-                bitstring += format(value, f"0{max_value.bit_length()}b")
-            else:
-                bitstring += format(value.value, f"0{max_value.bit_length()}b")
-
-    # Pad the bitstring with zeroes until the length is divisible by 6.
-    remainder = len(bitstring) % 6
-    if remainder > 0:
-        for _ in range(0, 6 - remainder):
-            bitstring += "0"
-
-    # Split the bitstring into 6-bit chunks and look up the corresponding
-    # letters.
-    letter_string = ""
-    for i in range(0, len(bitstring), 6):
-        chunk = int(bitstring[i : i + 6], 2)
-        letter_string += letters[chunk]
-    return letter_string
-
-
-def decrypt_settings_string_enum(encrypted_string: str) -> Dict[str, Any]:
-    """Take an enum-based encrypted string and return a dictionary.
-
-    Args:
-        encrypted_string (str): Passed settings string.
-
-    Returns:
-        dict: Returns the decrypted set of data.
-    """
-    # Take each letter of the encrypted_string and convert it to a 6-bit binary
-    # number, then use the embedded keys to get the value from the settings
-    # string.
-    bitstring = ""
-    for letter in encrypted_string:
-        index = letter_to_index[letter]
-        bitstring += f"{index:06b}"
-    bitstring_length = len(bitstring)
-    settings_dict = {}
-    bit_index = 0
-    key_size = max([member.value for member in SettingsStringEnum]).bit_length()
-    # If there are fewer than (key_size + 1) characters left in our bitstring,
-    # we have hit the padding. (key_size + 1 characters is the minimum needed
-    # for a key and a value.)
-    while bit_index < (bitstring_length - (key_size + 1)):
-        # Consume the next key.
-        key = int(bitstring[bit_index : bit_index + key_size], 2)
-        bit_index += key_size
-        key_enum = SettingsStringEnum(key)
-        key_name = key_enum.name
-        key_data_type = SettingsStringTypeMap[key_enum]
-        val = None
-        if key_data_type == SettingsStringDataType.bool:
-            val = True if bitstring[bit_index] == "1" else False
-            bit_index += 1
-        elif key_data_type == SettingsStringDataType.int4:
-            val = bin_string_to_int(bitstring[bit_index : bit_index + 4], 4)
-            bit_index += 4
-        elif key_data_type in (SettingsStringDataType.int8, SettingsStringDataType.u8):
-            val = bin_string_to_int(bitstring[bit_index : bit_index + 8], 8)
-            if key_data_type == SettingsStringDataType.u8 and val < 0:
-                val += 256
-            bit_index += 8
-        elif key_data_type in (SettingsStringDataType.int16, SettingsStringDataType.u16):
-            val = bin_string_to_int(bitstring[bit_index : bit_index + 16], 16)
-            if key_data_type == SettingsStringDataType.u16 and val < 0:
-                val += 65536
-            bit_index += 16
-        elif key_data_type == SettingsStringDataType.var_int:
-            bit_len, _ = get_var_int_encode_details(key_enum)
-            val = decode_var_int(key_enum, bitstring[bit_index : bit_index + bit_len])
-            bit_index += bit_len
-        elif key_data_type == SettingsStringDataType.list:
-            list_length = int(bitstring[bit_index : bit_index + 8], 2)
-            bit_index += 8
-            val = []
-            key_list_data_type = SettingsStringListTypeMap[key_enum]
-            for _ in range(list_length):
-                list_val = None
-                if key_list_data_type == SettingsStringDataType.bool:
-                    list_val = True if bitstring[bit_index] == "1" else False
-                    bit_index += 1
-                elif key_list_data_type == SettingsStringDataType.int4:
-                    list_val = bin_string_to_int(bitstring[bit_index : bit_index + 4], 4)
-                    bit_index += 4
-                elif key_list_data_type in (SettingsStringDataType.int8, SettingsStringDataType.u8):
-                    list_val = bin_string_to_int(bitstring[bit_index : bit_index + 8], 8)
-                    if key_list_data_type == SettingsStringDataType.u8 and val < 0:
-                        val += 256
-                    bit_index += 8
-                elif key_list_data_type in (SettingsStringDataType.int16, SettingsStringDataType.u16):
-                    list_val = bin_string_to_int(bitstring[bit_index : bit_index + 16], 16)
-                    if key_list_data_type == SettingsStringDataType.u16 and val < 0:
-                        val += 65536
-                    bit_index += 16
-                elif key_data_type == SettingsStringDataType.var_int:
-                    bit_len, _ = get_var_int_encode_details(key_enum)
-                    list_val = decode_var_int(key_enum, bitstring[bit_index : bit_index + bit_len])
-                    bit_index += bit_len
-                else:
-                    # The value is an enum.
-                    max_value = max([member.value for member in key_list_data_type])
-                    int_val = int(bitstring[bit_index : bit_index + max_value.bit_length()], 2)
-                    list_val = key_list_data_type(int_val)
-                    bit_index += max_value.bit_length()
-                val.append(list_val)
-        else:
-            # The value is an enum.
-            max_value = max([member.value for member in key_data_type])
-            int_val = int(bitstring[bit_index : bit_index + max_value.bit_length()], 2)
-            val = key_data_type(int_val)
-            bit_index += max_value.bit_length()
-        # If this setting is not deprecated, add it.
-        # The plando setting needs to be encoded in settings strings but not applied when decoding for logging purposes.
-        if key_enum != SettingsStringEnum.enable_plandomizer:
-            settings_dict[key_name] = val
-    return settings_dict
diff --git a/randomizer/Settings.py b/randomizer/Settings.py
index 8e9bb8d8f..53ca350ca 100644
--- a/randomizer/Settings.py
+++ b/randomizer/Settings.py
@@ -53,7 +53,7 @@
 from randomizer.Patching.Library.Generic import IsItemSelected, HelmDoorInfo, HelmDoorRandomInfo, DoorItemToBarrierItem, getCompletableBonuses, IsDDMSSelected, MEDAL_PROGRESSIVE_RATIOS
 from randomizer.Patching.CoinPlacer import gen_mayhem_coins
 from randomizer.Prices import CompleteVanillaPrices, RandomizePrices, VanillaPrices
-from randomizer.SettingStrings import encrypt_settings_string_enum
+from randomizer.ProtoSerializer import serialize_settings_to_base64, deserialize_settings_from_base64, proto_to_settings
 from randomizer.ShuffleBosses import (
     BossMapList,
     KRoolMaps,
@@ -254,13 +254,8 @@ def __init__(self, form_data: dict, random=random):
 
         self.resolve_settings()
 
-        # Generate the settings string - DO THIS LAST because the encryption method alters the form data
-        try:
-            logger = logging.getLogger(__name__)
-            self.settings_string = encrypt_settings_string_enum(form_data)
-            # logger.warning("Using settings string: " + self.settings_string)
-        except Exception as ex:
-            raise Ex.SettingsIncompatibleException("Settings string is in an invalid state. Try applying a preset and recreating your changes.")
+        # Generate the settings string - DO THIS LAST
+        self.settings_string = self.to_proto_string()
 
     def apply_form_data(self, form_data):
         """Convert and apply the provided form data to this class."""
@@ -3389,6 +3384,14 @@ def __repr__(self):
         """
         return json.dumps(self.__dict__)
 
+    def to_proto_string(self):
+        """Export settings as a protobuf-encoded base64 string.
+
+        Returns:
+            str: Base64-encoded protobuf string representing the settings.
+        """
+        return serialize_settings_to_base64(self)
+
     def __setattr__(self, name, value):
         """Set an attributes value but only after verifying our hash."""
         super().__setattr__(name, value)
diff --git a/randomizer/proto_gen/__init__.py b/randomizer/proto_gen/__init__.py
new file mode 100644
index 000000000..c8c38a17b
--- /dev/null
+++ b/randomizer/proto_gen/__init__.py
@@ -0,0 +1 @@
+"""Generated protocol buffer modules for DK64 Randomizer settings."""
diff --git a/worker/worker.py b/worker/worker.py
index 29ed25982..716f772db 100644
--- a/worker/worker.py
+++ b/worker/worker.py
@@ -22,7 +22,8 @@
 from opentelemetry._logs import set_logger_provider
 from opentelemetry.sdk._logs import LoggerProvider, LoggingHandler
 from opentelemetry.sdk.trace.export import BatchSpanProcessor
-from randomizer.SettingStrings import decrypt_settings_string_enum, encrypt_settings_string_enum
+from randomizer.Settings import Settings
+from randomizer.ProtoSerializer import serialize_settings_to_base64, deserialize_settings_from_base64, proto_to_settings, settings_to_proto
 from randomizer.Enums.Types import ItemRandoSelector, KeySelector, ItemRandoFillerSelector
 from randomizer.Lists.EnemyTypes import EnemySelector
 from randomizer.Lists.HardMode import HardBossSelector, HardSelector
@@ -136,19 +137,34 @@ def get_selector_info():
 
 @api.route("/convert_settings", methods=["POST"])
 def convert_settings():
-    """Convert settings between JSON and encrypted string formats."""
+    """Convert settings between JSON and protobuf string formats."""
     data = request.get_json()
     if "settings" in data:
         try:
             # Attempt to interpret `settings` as JSON
             settings_json = json.loads(data["settings"])
-            # If successful, encrypt it
-            encrypted = encrypt_settings_string_enum(settings_json)
-            return jsonify({"settings_string": encrypted})
+            # If successful, convert to Settings object and serialize to proto
+            settings_obj = Settings(settings_json)
+            proto_string = settings_obj.to_proto_string()
+            return jsonify({"settings_string": proto_string})
         except json.JSONDecodeError:
-            # If `settings` is not JSON, decrypt it
-            decrypted = decrypt_settings_string_enum(data["settings"])
-            return jsonify(decrypted)
+            # If `settings` is not JSON, deserialize from proto string
+            proto = deserialize_settings_from_base64(data["settings"])
+            # Convert proto to dict for JSON response
+            # The proto has nested structure (item_settings, requirement_settings, etc.)
+            # We need to flatten it to match the form_data structure
+            from google.protobuf.json_format import MessageToDict
+            nested_dict = MessageToDict(proto, preserving_proto_field_name=True)
+            
+            # Flatten the nested structure
+            settings_dict = {}
+            for category_key, category_value in nested_dict.items():
+                if isinstance(category_value, dict):
+                    settings_dict.update(category_value)
+                else:
+                    settings_dict[category_key] = category_value
+            
+            return jsonify(settings_dict)
     else:
         return jsonify({"error": "Invalid data"}), 400
 
@@ -167,11 +183,13 @@ def export_archipelago_yaml():
         game_version = data.get("game_version", "0.6.6")
 
         # Settings should already be a dict from serialize_settings()
-        # Only decrypt if it's actually an encrypted string (starts with valid base64-like chars, not '{')
+        # Only deserialize if it's actually a proto string (not JSON)
         if isinstance(settings_data, str):
-            # Check if it looks like an encrypted string (not JSON)
+            # Check if it looks like a proto string (not JSON)
             if not settings_data.strip().startswith("{"):
-                settings_data = decrypt_settings_string_enum(settings_data)
+                proto = deserialize_settings_from_base64(settings_data)
+                from google.protobuf.json_format import MessageToDict
+                settings_data = MessageToDict(proto, preserving_proto_field_name=True)
             else:
                 # It's a JSON string, parse it
                 settings_data = json.loads(settings_data)