AVIF to JPG converter
Convert AVIF files to JPG inside this page. No upload, no limit on how many, no watermark.
- 0 uploads
- No limits
- No signup
- Works offline
AVIF is the newest image format in wide use, and it is very good — which does not help when the file will not open. Downloaded from a modern site, exported by a recent phone or produced by an image tool, an AVIF often lands in software that has never heard of it. Converting to JPEG trades the efficiency away for the one thing JPEG has that nothing else does: it works everywhere, without exception, including in software written thirty years ago.
When you actually need this conversion
- A desktop application, a print service or an upload form will not accept or display the file.
- You need to send the image to someone and cannot be sure what they will open it with.
- You are putting it into a document, a slide deck or a system that predates 2023.
What to watch out for
- The file will get bigger, often by half again. AVIF is substantially more efficient than JPEG, and you are giving that up on purpose.
- Transparency is lost — AVIF supports an alpha channel and JPEG does not. Transparent areas are flattened onto a colour.
- AVIF can store more than 8 bits per colour channel. JPEG cannot, so wide-gamut or HDR images are reduced to standard range.
AVIF and JPG, side by side
| AVIF | JPEG | |
|---|---|---|
| Released | 2019 | 1992 |
| Compression | both | lossy |
| Transparency | yes | no |
| Animation | yes | no |
| Support | all current browsers; limited elsewhere | everywhere, without exception |
AVIF looks excellent and is refused by a lot of software. Converting to JPEG roughly doubles the file size and loses AVIF’s wide colour handling, but produces something that opens anywhere.
How the conversion works here
Your file is decoded in a Web Worker inside this browser tab — by the browser's own image pipeline where it can, and by a WebAssembly build of libheif or libavif where it cannot. The decoded pixels are then re-encoded with MozJPEG, the same encoder Squoosh uses.
All of that happens on the processor in front of you. There is no upload step, no queue and no server, which is why there is no size cap, no daily allowance and no paid tier — and why the whole thing keeps working with the network switched off.
Doing more than one thing
Most people converting a format also need it smaller or a different size. The result screen hands your converted files straight to the compressor or the resizer in one click — no second download, no re-selecting files. If you need several formats, the general converter lets you pick the output each time.
How it works
- 01Add your AVIF filesDrop them on the page, click to browse, paste from the clipboard, or drop a whole folder.
- 02Conversion runs on your deviceEach file is decoded and re-encoded as JPG by a WebAssembly codec in a background thread. Nothing is uploaded.
- 03Adjust if you need toMove the quality slider — 90 is visually indistinguishable from the source for most photographs.
- 04DownloadSave one file, or take the whole batch as a zip built on your device.