Compress your images/pictures up to 90% without visible quality loss

Caesium Image Compressor

Caesium Image Compressor

  -  21.6 MB  -  Open Source
  • Latest Version

    Caesium Image Compressor 2.7.1 LATEST

  • Review by

    Sophia Jones

  • Operating System

    Windows 7 / Windows 8 / Windows 10 / Windows 11

  • User Rating

    Click to vote
  • Author / Product

    SaeraSoft & Matteo Paonessa / External Link

  • Filename


Caesium Image Compressor is a free, open-source, advanced compression tool for photos and images (JPG, PNG, GIF), supporting batch, preview, and many more. Caesium saves space and makes uploads faster. Caesium Image Compressor is a multiple award-winning software developed for simplicity and effectiveness.

With more than one million worldwide downloads, Caesium Image Compressor is one of the most popular image optimization software available helping photographers, bloggers, webmasters, businesses, or casual users at storing, sending, and sharing digital pictures.

Providing a simple yet effective interface with a real-time preview and multiple image processing at the same time, everyone will be able to reach the best result. Advanced users will find extra features, like metadata storing options or folder structure support.

Features and Highlights
  • Reserve the original file format without losing any visual quality
  • No additional software required to open compressed files
  • Process files in batch mode
  • Choose the compression level with a simple slider
  • Choose the different compression levels of each image
  • Support for custom suffix
  • Side by side (comparison) preview, with original and compressed pictures
  • View details using the zoom function
  • You can custom visualization options
  • Support for common file formats
  • Support for date/time and metatag

  • Caesium Image Compressor 2.7.1 Screenshots

    The images below have been resized. Click on them to view the screenshots in full size.

    Caesium Image Compressor 2.7.1 Screenshot 1
  • Caesium Image Compressor 2.7.1 Screenshot 2

What's new in this version:

- Drag and drop on advanced import dialog list

- Improvements for advanced import dialog
- Improved zh_CN translation
- Fixed viewport on smaller screens