If you’ve got images in multiple formats to optimize, you’ll find ImageRecycle to be a safe bet. 👉 PNG Image file saving: 99.98% (output file is JPEG) If you’re okay with that, then Compress Now takes the crown for best image compressor without losing quality. The one downside of this online image optimizer is that while you can feed all three image file types (JPEG, PNG, GIF) into the tool, it will only spit out JPEGs on the other end. When I say smidgeon, I mean that I’d have a hard time telling which is which if you shuffled them and asked me to pick out the compressed versus the original. The compressed image was a smidgeon less shiny. When running the test, I set the compression amount to 65% and to my naked human eye, I could barely tell the difference between the original and the much lighter compressed version. The maximum file size you can upload is 9 Mb = 9000 KB, which is well above and beyond our two example images. It has a few other useful features, including the fact that it allows you to choose the degree to which you’d like to compress your uploaded image. Compress Now is an excellent image optimizer tool that allows you to compress three of the most common image file types: JPG, GIF, and PNG.

Top free image compression software