Free image compressor online

An image compressor reduces file size so pages and uploads are lighter. PixelCrush does that for JPG, PNG, and WebP in the browser. There is no account and no server upload of your images.

What compression changes

Compression removes data that is hard to see, or stores pixels more efficiently. Lossy modes (common for JPG and lossy WebP) trade a little detail for a much smaller file. Lossless modes keep every pixel and still shrink many PNGs.

Formats PixelCrush supports

• JPG: Good for photos. Watch quality if you recompress the same file many times.
• PNG: Common for UI, screenshots, and transparency.
• WebP: Often smaller than PNG or JPG at similar quality.

Why browser-based matters

Processing stays on your device. That is useful for screenshots, product shots, or anything you do not want to send to a third-party upload API.

Related: PNG to WebP · PNG vs WebP · pngcrush online