Snip or paste a formula image and freetex recognizes it locally as LaTeX, straight onto your clipboard — an open-source, offline alternative to SimpleTex. Images never leave your machine: no accounts, no uploads, no quotas. The engine is the LaTeX-OCR (pix2tex) ONNX model running on CPU.
Grab the package for your platform from Releases:
| Platform | Package |
|---|---|
| Windows x64 / arm64 | *-setup.exe or .msi |
| Linux x64 / arm64 | .deb / .rpm / .AppImage (Ubuntu 22.04 / 24.04 / 26.04 and comparable distros) |
| Android arm64 | .apk (pick images from the gallery, recognize on device) |
On first launch, download the recognition model (~180 MB, one time) on the Settings page.
- 📸 Snip via hotkey (F9 by default), drag & drop, Ctrl+V paste, or upload
- ⚡ Local offline recognition with live KaTeX preview and an editable LaTeX source
- 📋 Copy as LaTeX /
$…$/$$…$$/ MathML (pastes as an equation in Word) - 🗂 Local history (text only, images are never stored)
- 🔄 Auto-update checks (in-place for NSIS / AppImage)
- 🌙 Light/dark themes, English & Chinese, tray icon
git clone https://github.com/ouyangjiahong26/freetex && cd freetex
cd frontend && npm install && cd ..
npx --prefix frontend tauri dev # develop
npx --prefix frontend tauri build # build- Architecture
- Config template (mirror env vars documented inline)
- Changelog
- Contributing