Why convert AVIF to JPG?
AVIF is the newest mainstream image format, built on the AV1 video codec. It compresses dramatically better than JPG — often half the size at the same quality — which is why websites have started serving it. The catch is reach: while current browsers can display AVIF, a lot of desktop photo viewers, older image editors, print shops, and upload forms still choke on it. If you downloaded an AVIF and your computer won't open it, converting AVIF → JPG gives you a file that opens and uploads anywhere, instantly.
AVIF vs JPG: when each wins
| AVIF | JPG | |
|---|---|---|
| Compression | Best-in-class (AV1) | Lossy, older |
| File size on photos | ~50% smaller than JPG | Larger |
| Compatibility | New browsers only; spotty elsewhere | Opens everywhere |
| Transparency | Full alpha | None — flattened to white |
| Best for | Serving images on modern sites | Sharing, printing, uploading anywhere |
How to convert AVIF to JPG
- Drop your AVIF files — drag onto the upload zone, click to browse, or paste from clipboard. Up to 30 at once.
- Set the quality — 90% is a safe default. Lower it for smaller files, raise it for maximum fidelity.
- Click Convert — decoding and re-encoding happen locally with the Canvas API. Your files stay on your device.
- Download — one by one, or all at once as a ZIP.
The transparency catch
JPG cannot store transparency. If your AVIF has transparent or semi-transparent areas, we flatten them onto a white background before encoding — otherwise those pixels would come out black. If you need to keep the transparent background, do not convert to JPG: convert to PNG instead, which preserves the alpha channel.
A note on file size
Do not be surprised if the JPG comes out larger than the original AVIF — that is normal. AVIF is one of the most efficient formats in existence, so almost any other format will be bigger. You are deliberately trading a few extra kilobytes for the ability to open the image anywhere. If compatibility is not your problem and you only care about size, keep the AVIF.
When you should not convert to JPG
- Screenshots and text. JPG smears hard edges and text into blurry halos. Convert to PNG to stay crisp.
- Anything needing transparency. A transparent graphic becomes a white-boxed graphic. Convert to PNG instead.
- Serving images on a modern website. If your audience uses current browsers, AVIF is smaller and sharper — keep it.
How to open AVIF files on Windows
Windows 11 (22H2 and later) opens AVIF files natively in the Photos app. On Windows 10, install the free AV1 Video Extension from the Microsoft Store — this adds AVIF decoding to Photos and File Explorer thumbnails. Chrome and Edge display AVIF without any extensions. If you downloaded an AVIF and your photo viewer shows a broken icon, converting it to JPG using the converter above gives you a file that opens everywhere, no extensions needed.
How to open AVIF files on Mac
macOS Ventura (13) and later open AVIF natively in Preview. On macOS Monterey and older, Preview may refuse AVIF. Use Chrome or Firefox to view the file, or convert to JPG here for full compatibility with older Mac apps — Photoshop CS6, older Affinity Photo, and older Office versions that predate AVIF support.
AVIF compatibility in 2026
Browser coverage for AVIF is now above 90% globally (Chrome 85+, Firefox 93+, Safari 16+, Edge 121+). The platforms still catching up: Internet Explorer (end-of-life but still used in some enterprise environments), Android WebView in older apps, and image processing libraries that have not updated their codecs. Print shops, stock photo upload forms, and most image editing apps older than 2022 reject AVIF. Converting to JPG eliminates all compatibility uncertainty at the cost of a slightly larger file.
AVIF to JPG for social media and sharing
Major social platforms — Instagram, Twitter/X, Facebook, LinkedIn — now accept AVIF in their web uploaders, but older mobile apps on those platforms and email clients (Gmail, Outlook, Apple Mail) may not render AVIF previews correctly. For profile photos, post images, and email attachments, JPG at 90% quality is still the safest universal choice. Convert your AVIF to JPG before uploading to avoid broken thumbnails and previews on older client versions.
Privacy
Every byte stays in your browser. No upload, no temporary server file, no log. The conversion runs in a <canvas> element using the browser's built-in JPG encoder.