No. All compression happens in your browser using WebAssembly. Your images never leave your device.

JPG, PNG, and WebP formats are supported. The compressed output maintains the same format as the original.

Typical reductions range from 40–80% depending on the image content and chosen quality level. Photos with lots of detail compress more.

At higher quality settings, the difference is nearly imperceptible. You can adjust the quality slider to find the best balance for your needs.

Yes, upload several images and each will be compressed independently with the same quality settings. Download them all at once.

Yes. The tool runs entirely in your browser, so it works on any device — including smartphones and tablets — with no app to install.

For web use, 70-80% quality reduces file size by 60-80% with minimal visible difference. For print, use 90%+ to preserve fine detail.

EXIF metadata such as camera info, GPS, and date is stripped during compression, which helps reduce file size and protects your privacy.