Image utility
Compress Image Online
Reduce image file size locally in your browser. Your image is not uploaded by this tool.
JPEG, PNG and WebP up to 25 MB
How compression works
The image is decoded and re-encoded inside this browser tab. JPEG and WebP support a quality setting that can reduce file size with controlled lossy compression. PNG is lossless in the browser Canvas encoder, so its quality slider is disabled and re-encoding is not guaranteed to make a PNG smaller.
The tool always reports the actual output size. If re-encoding makes a file larger, it says so instead of claiming a false saving.
Frequently asked questions
Is my image uploaded?
No. This compressor uses browser-native decoding and Canvas encoding and does not implement a server upload path.
Why is PNG quality disabled?
The browser Canvas PNG encoder is lossless and does not use the JPEG/WebP quality parameter. For stronger size reduction, choose WebP or JPEG when transparency is not required.