AVIF to JPG

What is AVIF?

AVIF — AV1 Image File Format — is a 2019 image standard that wraps the AV1 video codec’s intra-frame compression into a still-image container. The result is dramatically smaller files than JPG, WebP or PNG at the same visual quality: comparison studies routinely measure AVIF as 30-50% smaller than WebP and 50-70% smaller than JPG. AVIF supports a full alpha channel, high bit depths (10 and 12 bits per channel for HDR), and wide colour gamuts. The format is now natively decoded by Chrome, Edge, Firefox, Opera and Safari 16+, which is why so many websites are starting to deliver their photographic content as AVIF.

What is JPG?

JPG (also written JPEG) has been the universal photographic format for over 30 years. It uses lossy DCT-based compression — visual detail is discarded to shrink the file — but the trade-off is so well tuned that a high-quality JPG is visually indistinguishable from its source for the vast majority of photographs. Every image viewer, browser, CMS, document tool, camera and printer in existence understands JPG. That ubiquity is exactly why people need to convert from the newer, more efficient AVIF to the older, universally-supported JPG.

Why convert AVIF to JPG?

Compatibility dwarfs every other reason. AVIF rendering is now near- universal in browsers, but the support outside the browser is patchy: WordPress added AVIF very recently and many themes still mis-handle it, Microsoft Word does not embed AVIF at all, Outlook and Gmail clients often strip or fail to render AVIF attachments, university and government portals demand JPG, stock-image marketplaces only accept JPG, and printers and reprographics workflows are JPG-only end to end. If you saved an AVIF from a modern website and now need to put it anywhere outside another modern website, converting to JPG is usually the fastest path.

Other use cases come up regularly. Stock-photo upload pipelines require JPG even when their delivery format is later AVIF. Embedded video editor slates expect JPG stills. And the universal one: a colleague asks for “a photo of X” and what they mean is a JPG attachment.

How to use this AVIF to JPG converter

1. Drop your AVIF file onto the dropzone, or click to browse.
2. Adjust the JPG quality slider. The default of 92% is near-lossless; drop to 80% if you want a smaller file at the cost of barely-visible compression artefacts.
3. If your AVIF has transparency, pick a background colour. White is the safe default for documents; match the page background for web work.
4. Click Convert to JPG to encode.
5. Inspect the converted preview — the caption shows the new file size and how it compares to the AVIF (it will almost certainly be larger).
6. Click Download JPG to save the result.

Quality tips for AVIF to JPG

AVIF’s efficiency advantage means the JPG output of even a small AVIF is usually several times larger at matching visual quality. There is no way around this — you are moving from a state-of-the-art codec to a 1990s codec. Don’t try to hit the AVIF’s file size by pushing the JPG quality slider very low; you will get visible blocking artefacts long before you reach parity. Aim for 88-92% JPG quality and accept the larger file.

If the AVIF was already heavily compressed by its source website, the re-encoded JPG inherits those artefacts and adds a small amount more on top. The cleanest results come from the highest-quality AVIF source available — ideally one exported directly from a photo app rather than downloaded from a delivery CDN.

Privacy

Your AVIF file never leaves your device. The decoder is the one built into your browser; the canvas re-encode happens in JavaScript; the resulting blob is offered as a regular browser download. There are no network requests after the page loads, which any browser’s DevTools Network panel will confirm. The same workflow runs identically offline.

Browser compatibility

AVIF decoding requires Chrome 85+, Edge 90+, Firefox 93+, Safari 16+ or any modern Chromium-based browser (Opera, Brave, Vivaldi). JPG encoding works in every browser. On older browsers the converter will show a decode error when you select an AVIF file — the fix is to update the browser, since this tool deliberately does not ship a JavaScript AVIF decoder (those are multi-megabyte and would defeat the point of an instant local converter).