HEIC FoxAVIF to JPG Converter
Convert AVIF images to universally compatible JPGs — free, instant, and entirely in your browser.
Why you ended up with an AVIF file
When you right-click an image on a website and save it, you get whatever format the site
actually served — and modern sites increasingly serve AVIF because it is
roughly 50% smaller than JPG at the same visual quality. Your browser displays it perfectly,
but the saved file carries the .avif extension and cannot be opened in most
desktop software, email clients, or upload forms.
Converting to JPG solves the compatibility problem in one step. JPG is accepted virtually everywhere, and your browser already contains a full AVIF decoder — so conversion here is near-instant, with no extra codec to download.
How to convert AVIF to JPG
- Drag your
.aviffiles onto the drop zone above, or click to browse. - Each file converts immediately. A Download button appears when it finishes.
- For multiple files, use Download all (.zip) to grab everything in one archive.
- Adjust the Quality slider if you need a smaller file (lower value) or maximum sharpness (higher value). Around 82% is a good starting point for most photos.
How conversion works
Modern browsers include a native AVIF decoder that this tool uses directly. Each file is decoded into an image bitmap and drawn onto an off-screen canvas. Because AVIF supports an alpha channel but JPG does not, any transparent pixels are filled with white before the canvas is saved as JPG — ensuring the result is a valid, clean JPEG with no artefacts from unsupported transparency.
If a file fails to decode, you will see a per-file error with a note about browser support. This typically means the file uses a bit-depth or profile variant not yet supported by your browser version. Updating to the latest Chrome or Edge usually resolves it.
Your files never leave your browser
The entire conversion runs inside your browser tab. Nothing is uploaded to a server at any point — you can open your browser's Network tab and confirm that no image data is transmitted. That matters because downloaded images often carry metadata you would rather not hand to a third-party service.
The tool also works offline once the page has loaded, which makes it practical for batch jobs even on an unreliable connection.
AVIF, JPG, and quality trade-offs
AVIF is a compressed format, and so is JPG. Converting between two lossy formats introduces a small additional quality step, though at the default quality setting it is visually indistinguishable for most photographs. If you plan to edit the image further after converting, work from the original AVIF and only convert to JPG as the final export step to keep cumulative loss to a minimum.
If you need lossless output — for a logo, icon, or an image you will edit heavily — use the PNG output option instead. For a deeper look at image format differences, see the WebP format guide and the HEIC vs JPG comparison.
Other conversions
Frequently asked questions
What is AVIF and why won't it open in most apps?
AVIF (AV1 Image File Format) is a modern image format built on the AV1 video codec. It produces smaller files than JPG at the same visual quality, so Google Images, Netflix, and many e-commerce sites now serve it. The catch: Microsoft Office, older photo editors, most email clients, and many upload forms do not yet support AVIF — converting to JPG fixes the compatibility problem instantly.
Why convert AVIF to JPG instead of keeping the AVIF?
JPG is universally accepted. If you saved an image from a website and it turned out to be AVIF, converting to JPG lets you open it in Windows Photos, attach it to an email, upload it to any form, and share it with anyone — without them needing a modern browser.
What happens to transparent areas in an AVIF file?
AVIF supports an alpha channel for transparency, but JPG does not. When you convert an AVIF with transparency to JPG, any transparent pixels are filled with a white background. If you need to keep transparency, convert to PNG instead.
What does the quality slider do?
The quality slider controls how much the JPG encoder compresses the image. Higher values (closer to 100%) produce sharper images at larger file sizes; lower values shrink the file further with a trade-off in sharpness. Around 82% is a good default for photographs — visually clean while keeping the file size reasonable.
Is there a limit on how many AVIF files I can convert?
No. You can convert one file or hundreds at once. Everything runs locally in your browser, so the only practical limit is your device's available memory.
Are my files uploaded to a server?
No. Conversion happens entirely inside your browser tab using canvas APIs built into the browser. Your images are never sent anywhere — you can disconnect from the internet after the page loads and conversion will still work.
My AVIF file failed to convert — what should I do?
A small number of AVIF files use encoding profiles or bit-depths that older browser versions do not support. Try updating your browser to the latest version. Chrome and Edge have the most complete AVIF support; Safari 16+ and Firefox 93+ also handle most variants. If the file still fails after updating, the AVIF may use an unusual encoding.
Can I download all converted files at once?
Yes. Once at least one file has finished converting, a "Download all (.zip)" button appears. Clicking it packages every successfully converted JPG into a single ZIP file.