AVIF to JPEG Converter — Free, No Upload
Convert AVIF images to JPEG in your browser — high quality, no upload, files never leave your device. No upload — runs 100% in your browser
or click to browse
How to use this tool
- Drop a AVIF file onto the box above (or click to browse).
- The tool decodes and re-encodes it locally — usually under a second.
- Click Download to save the JPEG.
About the two formats
AVIF: AVIF is built on the AV1 video codec and beats WebP on compression, but many programs (older Photoshop, Windows Photo Viewer, some messaging apps) still cannot open it. Chrome, Edge, Firefox and recent Safari all can.
JPEG: JPEG uses lossy DCT compression tuned for photographs and does not support transparency — transparent areas become a solid background (white on this site). At quality 90+ the artifacts are usually invisible to the eye.
What happens in this conversion
Transparency is lost in this conversion: AVIF supports an alpha channel but JPEG does not, so transparent pixels are flattened onto a white background.
Why “no upload” matters
Most online converters send your file to a server, convert it there, and hand it back — which means a copy of your photo sits on somebody else’s machine, and you are trusting their deletion policy. This page does the same job with the roles reversed: the conversion engine is downloaded to your browser once, and your file stays on your device the whole time. It also makes the tool faster on repeat use, because nothing travels over the network except this page itself.
Frequently Asked Questions
Are my files uploaded to a server?
No. Everything on this page runs inside your browser using JavaScript and WebAssembly. Your file never leaves your device — you can even disconnect from the internet after the page loads and the tool still works.
Will quality be lost?
Transparency is lost in this conversion: AVIF supports an alpha channel but JPEG does not, so transparent pixels are flattened onto a white background. The encoder here runs at 92% quality, which is visually indistinguishable from the source for normal use.
Does it work on my phone?
Yes — the converter runs entirely in the browser, so any recent iPhone, Android, Windows or Mac device works. Nothing is installed.
Is there a file size limit?
No hard limit; the practical limit is your device memory, since the image is decoded locally. Files of 20-50 MB convert fine on modern hardware.