Are my images uploaded to a server?

No. All decoding and encoding runs in your browser using Canvas and WebAssembly.

Which formats are supported?

Input: anything your browser can decode (JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF). Output: WebP, AVIF, JPEG, PNG.

WebP and AVIF are 25–50% smaller than JPEG at equivalent visual quality, ideal for web performance.

Last Updated: September 12, 2026

Convert images between WebP, AVIF, JPEG, and PNG. Batch-friendly, adjustable quality, 100% client-side.

Output formatQuality: 85