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4K Image CompressorOptiImage
Freemium

Free download with a paid premium upgrade.

 Free

Free and open source under the LGPL-2.1-only licence.

Windows, macOS Linux
  • Compress to a percentage or an exact target file size
  • Batch processing of many images
  • Lossless and lossy compression modes
  • Option to keep or remove metadata
  • Some features are reserved for the paid premium tier
  • Closed source
  • Linux only
  • Young project, first released in late 2024
Downloadable app Downloadable app
Closed source Open source
License not stated License: LGPL-2.1-only
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked October 1, 2026

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