JPEGmini

JPEGmini reduces the file size of your photos by up to 80%, while keeping their original quality and JPEG form.

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A free app that makes images load faster and take less disk space, without sacrificing quality
Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency.
The sweetest Image Compression App on the Mac
Reduces the file size of your JPEG images. Every uploaded image is analyzed to apply the best possible JPEG encoding
Optimize your images with blazing speed using powerful API and online web interface