AI-Powered Game Screenshot Translation Tool for Windows

Capture your game screen · AI translates the text · Result overlays directly on the image
Play any foreign-language game. Read everything. No interruptions.

📥 Download • 📖 Documentation • 💬 Community • ☕ Ko-fi • 💜 Patreon

LangForge is an open-source AI-assisted game translation tool for Windows. It automatically detects your game window, captures the screen, and translates on-screen foreign text using your choice of AI engine — overlaying the result directly on the screenshot, positioned where the original text was.

Designed for players who want to enjoy Japanese, Korean, or any foreign-language game without switching windows or pausing to look things up.

⚠️ LangForge is under active development. Features and UI may change between versions.

No API key. No account. No configuration whatsoever.
LangForge uses EasyOCR locally to detect and position text, then routes through Google Translate (free, no quota limits) for the actual translation.
→ Best for: first-time users, or anyone who doesn't want to create API accounts.

Runs entirely on your own machine. No internet after setup, no API costs, no data leaves your device.
Requires installing OLLAMA and a vision-capable model (e.g. llava). A dedicated GPU is recommended.
→ Best for: privacy-focused users with decent hardware.

Supports 10 mainstream AI engines including Gemini, Groq, Mistral (free tiers available) and OpenAI, Claude, Grok, HuggingFace, Together AI, Cerebras, NVIDIA NIM.
LangForge automatically rotates engines when a free quota runs out — keeping translation running uninterrupted.
→ Best for: users who want the highest translation accuracy.

1. Download and run LangForge.exe
2. Select 🔍 Local OCR + Google Translate as your engine
3. Set your target game window title in the Capture tab
4. Click Capture & Translate — done!

No API key needed. No account required.

1. Get a free Gemini API Key from aistudio.google.com (Google account required, no credit card)
2. Run LangForge, select ☁ Cloud Engine → Gemini
3. Paste your key and start translating

For maximum free quota, also set up Groq, Mistral, Together AI and Cerebras — LangForge rotates them automatically.

1. Install OLLAMA
2. Run ollama pull llava to download a vision model
3. Start with ollama serve
4. In LangForge, select 🦙 Local Engine (OLLAMA)

New in V1.5: Use Simple Mode (Tab 7) for a streamlined OLLAMA experience — no API key, minimal setup.

git clone https://github.com/toyakyo/LangForge.git
cd LangForge
pip install anthropic easyocr google-genai groq keyboard mistralai numpy openai pillow pywin32
python LangForge.py

⚠️ Free quota numbers are subject to change. Check each provider's official announcements for the latest limits.

LangForge is verified using Microsoft Process Monitor (Sysinternals).

The application makes only the API calls required for translation — to the AI engine you have selected. No data is sent to any developer-controlled server.

• ✅ API Keys stored locally in configs.json, encrypted with your machine ID
• ✅ No upload of screenshots or personal data
• ✅ No connection to developer servers
• ✅ No remote license verification
• ✅ SHA256 checksum published for every release
• ✅ Full source code available for inspection

File Integrity Verification

# Verify in PowerShell
Get-FileHash .\LangForge.exe -Algorithm SHA256

If the hash does not match, do not run the file. Re-download from the official page.

LangForge/
├── LangForge.py          # Main application
├── platforms.json        # Game platform definitions
├── emulators.json        # Emulator definitions
├── requirements.txt      # Python dependencies
├── configs.json          # User config (auto-generated, API keys encrypted)
├── favicon.ico           # App icon
└── translation_logs/     # SQLite DB + screenshots (auto-generated)
    ├── langforge.db
    └── screenshots/

• Cloud engine support (Gemini, Groq, Mistral, OpenAI, Claude, Grok)
• HuggingFace / Together AI / Cerebras / NVIDIA NIM engines
• OLLAMA local engine
• Local OCR + Google Translate mode (zero setup)
• Simple Mode (Tab 7) — streamlined local-engine interface
• Session recording & playback with live delay mode
• AI walkthrough analysis
• Auto-capture with scene stability detection
• Encrypted API key storage
• Bilingual UI (繁中 / English)
• Dark / Light theme toggle
• Platform editor
• One-click Advanced / Simple Mode switch
• Multi-language UI (beyond zh/en)
• macOS / Linux support (planned)

LangForge is built by a solo developer in spare time. If it's helped you enjoy a game you couldn't read before — your support means a lot.

LangForge is provided as-is during active development and may not be fully stable. Use at your own risk.
API usage costs (if any) are the responsibility of the user based on their chosen AI engine provider.
Translation results are AI-generated and may not always be accurate.

Copyright © 2026 GoOnSoft. All rights reserved.
Built with ❤️ by Toya Kyo — Solo Developer from Taiwan 🇹🇼