SnapPress

A desktop application for compressing JPEG and PNG photos without visible quality loss. Built with Python and customtkinter.

Features

• Drag & drop support (not yet)
• Batch compression (multiple files at once)
• Adjustable quality slider (1–95%)
• Progress bar with live feedback
• Savings summary (before / after)
• Saves compressed files next to originals — originals are never overwritten
• Settings menu with custom output folder and adjustable thumbnail size

Screenshots

Requirements

• Python 3.10+
• Pillow

Installation

Universal (Windows, macOS, Linux)

1. Clone the repository:

git clone https://github.com/Sebian12/SnapPress.git
cd SnapPress

2. Install dependencies:

pip install Pillow customtkinter CTkMessagebox

3. Run the app:

python main.py

Windows only

1. Download .exe file from current release

Linux only (native binary)

1. Download the Linux binary from current release
2. Make it executable chmod +x SnapPress
3. Run: ./SnapPress

Native Linux Support

A native Linux binary is available starting from v1.8.1. It was built and tested on Zorin OS 18.1 GNOME (Ubuntu-based), v1.8.4 built and tested on Fedora Linux 44 KDE.

Since v1.9.0, every release comes with an .exe file for Windows (oldest tested Windows version is Windows 7), a binary for Ubuntu-based systems, and a binary for Fedora-based systems.

Note: the binary may not run on distributions with an older glibc version or on minimal/non-glibc systems (e.g. Alpine). It may also have issues on pure Wayland sessions without XWayland.

If the binary doesn't work on your system, you can run from source:

pip install Pillow customtkinter CTkMessagebox
python3 main.py

Usage

1. Click Choose photos to select files
2. Adjust the quality slider (default: 80%)
3. Click Compress and save
4. Compressed files are saved in the same folder as the originals with a _compressed suffix or saved in selected folder

Roadmap

• Switch from tkinter to customtkinter
• Dark mode (1.2.0)
• Settings menu (1.3.0)
• Custom output folder (1.4.0)
• Settings saver (1.5.0)
• File counter (1.5.0)
• Button to clear photo list or single photo (1.5.0)
• Compressed file size next to file name (1.6.0)
• Thumbnails of photos (1.7.0)
• App logo (1.7.1)
• User set thumbnail size (1.7.2)
• Optimization (1.8.0)
• EXIF metadata preservation (1.9.0)
• Granular metadata control in settings (sliders/checkboxes to choose which EXIF tags to keep) (1.10.0)
• Drag & Drop support (1.11.0)
• Multithreading (1.12.0)
• New file format support (1.13.0)
• Pack compressed photos to zip (1.14.0)
• Android port (2.0.0)

Tech stack

• Python 3.14
• customtkinter — GUI
• Pillow — image processing
• CTkMessageBox

License

MIT