Convert AVIF images to JPG so they open everywhere. Free, fast, and 100% private — your images are converted right in your browser and never uploaded.
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Supported formats: AVIF
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AVIF to JPG Features
• Open modern AVIF images anywhere by converting to a universal format
• Lossless quality maintains original image quality
• Batch conversion of multiple files
• Clean conversion without watermarks
AVIF is efficient, but the world still runs on JPEG. Image Machine converts your AVIF files to JPG entirely in your browser — no upload, no account — so you can open them in Lightroom, share to old devices, or attach them to emails without compatibility headaches. The conversion stays on your machine; nothing ever leaves it.
AVIF to JPG, measured on the live converter
| What happens | The AVIF | The JPG it produces |
|---|---|---|
| File size | A 1600x1200 photograph at 218,143 bytes, written at quality 60 with 4:2:0 chroma — an ordinary web AVIF. | 418,481 bytes. The JPG is 1.92x BIGGER, at the page's default quality of 90. That is the trade: AVIF is a newer codec doing the same job with fewer bytes, and converting to JPG buys compatibility and pays for it in size. No setting here reverses it — lowering quality shrinks the JPG by discarding more of the picture, not by catching up. |
| Photographic detail | Whatever the AVIF decodes to. | Mean channel error 2.26 against the AVIF's own decoded pixels, worst 40, with 188,867 pixels of 1,920,000 moving by more than 8. That is a second lossy pass, and it is unavoidable — the picture is already an AVIF. Against libjpeg asked for the same quality it is very close: identical quantisation tables, identical 4:2:0, luma mean 0.046 (worst 6) and chroma mean 0.462 (worst 9). 418,481 bytes against libjpeg's 434,665, and libjpeg with optimised Huffman tables lands at 418,012 — 0.11% apart. |
| Gradients | A ramp stepping one 8-bit unit every eight columns. | Mean channel error 0.0, worst 0, over all 24,000 pixels. No banding was added. The thing people expect JPEG to ruin is the thing it left alone. |
| Flat colour with a hard edge | Two flat halves meeting at one column. | Mean channel error 0.578 over 24,000 pixels, and 240 of them move by more than 8 — exactly the two columns at the boundary. Right on the seam the error is 37 per channel; one pixel out it is 1.0, and beyond that under 0.9 everywhere. That is chroma subsampling, and it is the one thing JPEG does badly to graphics. |
| Transparency | Opaque, 50% alpha and fully transparent regions. | JPEG has no alpha, so the converter fills it with the background colour you pick. Checked on two colours so the answer cannot be a default in disguise: fully transparent came out 255,255,255 on white and 255,0,254 on magenta. Partial alpha is blended rather than dropped — a 50% pixel of 221,40,41 came out 237,147,147 over white and 239,20,148 over magenta, both matching half the pixel plus half the background to within one unit. |
| Animation | An 8-frame animated AVIF. | One frame — the first one, at full 320x240. A JPEG cannot hold an animation, so this is not a defect, but losing seven frames in silence was: the page used to report a successful conversion and a 55% size saving and say nothing else. It now counts the frames in the file and tells you which one it kept. |
Measured by uploading fixtures to this page in a real browser and reading the JPEGs it produced with Pillow, which had no part in making them. Default settings throughout: quality 90, and the background colour stated per row. The comparison base is the AVIF's OWN decoded pixels rather than the picture the fixture was built from, because the AVIF's compression is not this converter's doing and counting it would blame the tool for something it never touched. That base was checked rather than assumed: Chrome's decode and Pillow's decode of the same file agree on all 1,200 rows, exactly, so the two encoders are being handed identical input. Two things this does NOT cover. The fixtures are 8-bit and plain sRGB (NCLX primaries 1, transfer 13, matrix 6), so nothing here describes what happens to a 10-bit or HDR AVIF or to a wide-gamut one — that needs its own measurement and has not had it. And the size row depends on the source: a quality 60 AVIF is what a site that adopted AVIF actually serves, but an AVIF saved at a higher quality starts larger and the ratio shrinks. The direction does not change; the number does.
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Frequently Asked Questions
How do I open an AVIF file on Windows 10?
Windows 10 doesn't natively decode AVIF without an extension. Converting your AVIF to JPG is the simplest fix — JPG is supported by every photo viewer, email client, and editing app on Windows. Once converted, you can open the file anywhere with no extra software.
Why won't Photoshop open my AVIF file?
Older versions of Photoshop and many other editors don't include AVIF support because the format is relatively new. Converting to JPG gives you a file that opens reliably in virtually any image editor, including Photoshop CS and CC versions released before 2022.
Does converting AVIF to JPG reduce image quality?
Yes — JPG uses lossy compression, so some fine detail is discarded during encoding. In practice, a high-quality JPG export looks nearly identical to the source for most photographs. If pixel-perfect fidelity matters, convert to PNG instead for a lossless result.
Can I upload AVIF files to Instagram or Facebook?
Most social platforms still require JPG or PNG uploads and will reject or silently re-encode AVIF files. Converting to JPG first gives you full control over quality before the platform applies its own compression, so your photos look as good as possible after posting.
Is it safe to convert photos to JPG using an online tool?
With Image Machine, your photos never leave your device. All decoding and encoding happens inside your browser using client-side code — no file is transmitted to any server. You can even disconnect from the internet before converting and the tool still works.