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PotgImageReader
Free

Free and open source under the GPL. Third-party translation APIs may charge separately.

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Windows, macOS, Linux Windows, Linux
  • Select-to-translate and screenshot OCR from a single hotkey
  • Pluggable engines, including self-hosted and OpenAI-compatible ones
  • Supports multiple documents and editable recognition areas.
  • Most engines require your own API keys
  • Much of the documentation is in Chinese
  • OCR accuracy depends on scan quality and installed language data.
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: GPL-3.0
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.