Compress Image — Free Online Image Compressor

How does image compression work?

Our compressor removes unnecessary metadata and optimizes color data to reduce file size while maintaining visual quality. You can adjust the quality level to balance size and clarity.

Which image formats are supported?

We support JPG, JPEG, PNG, WebP, GIF, BMP, and TIFF formats. You can compress in the original format or convert to another format.

Is the compression lossy?

JPEG and WebP compression is lossy. PNG compression at 100% quality is effectively lossless. Adjust the quality slider to balance size and clarity.

Are my files secure?

Yes. All uploads are processed on our secure servers and automatically deleted after 1 hour. We never store or share your files.

Is there a file size limit?

Free users can upload files up to 50MB each and batch up to 20 images at a time. There are no daily limits.

Can I compress images on mobile devices?

Yes. Our tool works on any device with a web browser, including smartphones and tablets. No app installation needed.

Will compression affect my image dimensions?

No. Our compression only reduces file size — it does not change the image dimensions or resolution. The output image keeps the same width and height.

What quality setting is best for website images?

For web images, 65-80% quality works best. It reduces file size by 50-70% while keeping images crisp on screens. For product photos, use 80-85%. For blog images, 65-75% is ideal.

Can I convert format while compressing, like PNG to JPG?

Yes. Use the output format selector to convert while compressing. PNG to JPG saves significant space. JPG to WebP saves even more for modern browsers.

Is PNG compression truly lossless?

When compressing PNG at 100% quality, compression is effectively lossless — no visual quality is lost. The file size reduction comes from optimizing color palettes and removing unnecessary metadata.