JPG to AVIF Converter
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Frequently asked questions
What is AVIF?
AVIF is a modern image format based on the AV1 video codec. Every modern browser supports it, which makes it great for websites: pages load faster.
How much smaller is AVIF than JPG?
It depends on the photo and the quality you pick. AVIF is usually noticeably lighter than JPG at similar quality, though an already heavily compressed JPG may shrink less. Each file's row shows the size before and after.
Why does encoding take so long?
The AV1 encoder works hard to find the best way to compress every part of the image. In the browser it runs on a single thread, so a large photo can take tens of seconds. In return, everything stays on your device.
Which quality should I choose?
The default of 75 is usually indistinguishable from the original on photos. Go lower for thumbnails and backgrounds, higher for very detailed shots.
Will AVIF open on my computer?
Modern browsers and many apps open AVIF, including the Photos app on Windows 11 and Preview on macOS. For older software, JPG is the safer choice.
Is it safe to convert my images here?
Yes. The site only downloads the converter itself; your images are processed in your browser and are never sent to a server.