diff --git a/index.html b/index.html
index 285c371..5913ab7 100644
--- a/index.html
+++ b/index.html
@@ -193,6 +193,18 @@
             </div>
 
             <div class="flex gap-2 justify-center items-center">
+                <div class="flex gap-2 items-center">
+                    <label for="offsetInput" class="text-zinc-300 text-sm">
+                        Offset (ms):
+                    </label>
+                    <input
+                        type="number"
+                        id="offsetInput"
+                        class="w-24 h-8 bg-zinc-800 text-zinc-100 border-2 border-zinc-700 rounded-lg px-2 text-center outline-none focus:border-orange-400 transition-all"
+                        value="0"
+                        step="10"
+                    />
+                </div>
                 <input type="file" name="lrcFileInput" id="lrcFile" class="hidden" accept=".lrc" />
                 <label
                     for="lrcFile"
diff --git a/src/main.js b/src/main.js
index 83db18d..792ac1b 100644
--- a/src/main.js
+++ b/src/main.js
@@ -17,6 +17,7 @@ const charByCharCheckbox = document.getElementById('isCharByChar')
 const duetCheckbox = document.getElementById('isDuet')
 const switchVocalistBtn = document.getElementById('switchVocalistBtn')
 const wordEndBtn = document.getElementById('wordEndBtn')
+const offsetInput = document.getElementById('offsetInput')
 let isWordByWord = wordByWordCheckbox.checked
 let isCharByChar = charByCharCheckbox.checked
 let isDuet = duetCheckbox.checked
@@ -531,7 +532,8 @@ function wordEnd() {
     const lineEl = itemsList[currentItemIndex].children[0]
     const wordEl = lineEl.children[currentWordIndex]
     if (typeof wordEl?.dataset?.beginTime == 'undefined') return
-    const currentTime = wavesurfer.getCurrentTime()
+    const offset = Number(offsetInput.value) / 1000
+    const currentTime = Math.max(0, wavesurfer.getCurrentTime() + offset)
     wordEl.dataset.endTime = currentTime
     wordEl.classList.add('active')
     if (currentWordIndex + 1 >= lineEl.childElementCount) {
@@ -555,7 +557,8 @@ function wordEnd() {
 }
 
 function next() {
-    const currentTime = wavesurfer.getCurrentTime()
+    const offset = Number(offsetInput.value) / 1000
+    const currentTime = Math.max(0, wavesurfer.getCurrentTime() + offset)
     if (isWordByWord) {
         // First item is not selected yet
         if (currentItemIndex == -1) {