Caesium is a fast and free graphic tool based on the Qt library, which allows to reduce the size of photos by up to 90% without any significant deterioration of their quality or format change. It supports graphic files in JPEG, PNG and BMP formats, enabling comprehensive compression of our photographs. The application is aimed at users who would like to reduce the size of photos stored on their computer's hard drive, prepare photos for publication on social networking sites or on their own website.

It offers features that allow you to reduce the size of your photos, optionally change their output format, and change the size of the image. Individual changes can be applied to individual files, as well as to the entire set of files. Caesium provides the user with several other useful options, with the help of which the processing process becomes simple and convenient.

These include automatic preview of changes, batch processing to make it easier to process large sets of photos, as well as automatic deletion of original files from the disk or skipping those whose output size is larger than the original one.