Why convert JPEG to AVIF?
At equivalent SSIM/Butteraugli perceptual quality scores, AVIF files are roughly 40–50% smaller than JPEGs and 20% smaller than WebP.
Private by design: zero uploads
No external API calls or cloud storage—your photos are encoded directly on your device.
Frequently asked questions
Why does AVIF encoding take a couple of seconds longer than JPG or WebP?
AV1 intra-frame compression searches many more block partition sizes and transform types than JPEG, which takes extra CPU cycles via WebAssembly in exchange for significantly smaller files.