Caesium for Windows

  • Free
  • In English
  • V 1.7.0
  • 4.1
  • (78)
  • Security Status

Softonic review

Compress your photos without quality loss

Caesium is a handy, easy-to-use tool that compresses your photos by up to 90% without quality loss. This means that your photos will effectively look the same but will weigh a lot less, which makes them more suitable for sharing online.

To use Caesium, add your photos to the list on the program’s interface (or simply drag and drop them) and select the quality you want to keep for them. Caesium can work with several images at the same time, while also allowing you to set a different quality value for each individual photo.

Once your list is ready, click the Compress button and let Caesium do its job. If you choose to save your files in the same folder as the original photos, the program gives you the option to add a custom suffix. When all the photos have been compressed, you can check the results and compare sizes thanks to Caesium’s data and the Preview function.

Caesium works great. It’s a handy tool for those of you who are constantly sending pics over email or posting them to your Facebook account. If only the Preview window had zoom, the program would be perfect!

Caesium makes your photos smaller without any noticeable quality loss.


  • Compresses images by up to 90% without quality loss
  • Works with multiple images at the same time
  • Can apply a different compression to each photo
  • Preview images to check results


  • No zoom in image preview

Older versions

Caesium for PC

  • Free
  • In English
  • V 1.7.0
  • 4.1
  • (78)
  • Security Status

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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.