Image Compressor

Compress JPG, PNG, and WebP images directly in your browser. Choose quality, optionally resize the longest edge, compare original and compressed sizes, then download files individually or as a ZIP. All processing happens locally — images are not uploaded to JISO or any server.

File type is checked from the file contents. JPG stays JPG and WebP stays WebP. PNG photos are saved as JPG so quality can shrink them. Transparent PNGs stay PNG unless WebP is smaller.

JISO Group builds websites, branding, automation, and custom software. This compressor is a free browser utility — no account and no upload.

Questions

Are my images uploaded?

No. Compression runs entirely in your browser.

Which formats are supported?

JPEG, PNG, and WebP.