Free online tool
Image Compressor
Compress JPG, PNG, and WebP images locally with visual quality control.
Processing runs in your browser. Review the data-handling notice before entering sensitive information or uploading a file. Downloads remain on your device.
WebP gives the best size reduction. Lower quality or dimensions for a smaller file.
How to use this tool
Choose an image, set the output format and maximum dimensions, and compress it. Compare the file size and visual result before replacing the original.
What to check
Check fine text, gradients and transparent areas. Compression settings and format conversion can change the appearance; keep an original copy.
Will a smaller file always look the same?
No. Some reductions remove image detail or reduce dimensions. Choose the smallest output that still works for its intended use.