What quality should I choose?

70% to 85% usually halves the file size with no visible loss. For less demanding uses 50% to 60% works too.

Why is PNG compression weak?

PNG is lossless, so browsers cannot compress it lossily. Convert PNGs to WebP or JPG (when transparency is not needed) for big savings.

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

Shrink images in bulk for web uploads, email or storage. Set the quality and a maximum width, and output JPG, WebP or keep the original format.

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What quality should I choose?: 70% to 85% usually halves the file size with no visible loss. For less demanding uses 50% to 60% works too.
Why is PNG compression weak?: PNG is lossless, so browsers cannot compress it lossily. Convert PNGs to WebP or JPG (when transparency is not needed) for big savings.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.