Compare software

ConverseenCaesium Image Compressor
Free

Free and open source; donations accepted.

 Free

Free and open source under the GPL.

Windows, macOS, Linux Windows, macOS, Web
  • Converts and resizes whole batches of images at once
  • Supports over 100 image formats
  • Batch processing with visible before and after sizes for the whole folder
  • Resize at the same time as compressing, in one pass
  • Not a full image editor, only batch operations
  • PDF conversion needs extra setup according to the help pages
  • No official Linux binary; you compile it or use a third-party build
  • Windows 10 build 1809 or later and macOS 12 or later, 64-bit only
Downloadable app Downloadable app, Web application
Open source Open source
License: GPL-3.0 License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked September 21, 2026

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