4 free tools
Image Compressors
Reduce image file size without making it look worse. Compress JPG, PNG or WebP and adjust the quality until the size is right, or give a limit such as 100 KB and let the tool find the settings.
Compress JPG
Make JPG photos smaller, free and with no sign-up. Adjust the quality, see the saving for each photo, and download.
Compress WebP
Make WebP images smaller while keeping transparency, free and with no sign-up. Adjust the quality and see the saving for each file.
Compress PNG
Shrink PNG images by up to 70% while keeping transparency. Uses palette quantisation, which browsers cannot do. Files are deleted immediately after processing.
Resize to KB
Compress an image to an exact file size limit. Type "100 KB" and the tool finds the settings for you. Free, no sign-up.