Free tool — runs in your browser

Convert images to AVIF

AVIF is the smallest mainstream image format — typically 50–60% under JPEG at the same visual quality. Convert to it, or back out of it, without uploading anything.

JPG · PNG · WebP → AVIF AVIF → JPG · PNG Nothing uploaded Royalty-free codec
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Drop an image here, or click to browse

JPG, PNG, WebP or AVIF — processed entirely on your device

Converting…
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After
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smaller
⬇ Download
Original — —
original image
Converted — —
converted image

How much smaller is AVIF really?

Measured on our own server with a single 1280×854 photograph, encoded from the same source at comparable perceived quality.

FormatFile sizevs JPEG
JPEG (quality 82)324 KB—
WebP (quality 82)286 KB12% smaller
AVIF (quality 40)130 KB60% smaller

Why convert to AVIF

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Much smaller files

AVIF uses AV1's compression, decades newer than JPEG's. Same picture, roughly half to a third of the bytes.

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Every current browser

Chrome 85+, Firefox 93+, Safari 16+ and Edge 121+ all display AVIF. WordPress accepts it from 6.5.

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Royalty-free

AV1 ships under AOMedia's royalty-free patent licence. No pool, no per-unit fee — unlike HEIC.

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Nothing leaves your device

The encoder is WebAssembly running in your own browser. We never see the image.

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Transparency and HDR

AVIF keeps alpha transparency and supports wide colour and higher bit depths, which JPEG cannot.

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Converts back too

Got an AVIF that some old program won't open? Convert it to JPG or PNG here.

Questions about AVIF

What is AVIF and why is it smaller?
AVIF is an image format built on the AV1 video codec. It uses far more advanced compression than JPEG, which dates from 1992. In our own testing on a 1280×854 photograph, AVIF produced a 130 KB file where JPEG needed 324 KB at comparable quality — around 60% smaller.
Which browsers can display AVIF?
All current ones. Chrome has supported AVIF since version 85 (2020), Firefox since 93 (2021), Safari since 16 (2022) and Edge since 121 (2024). WordPress supports AVIF uploads from version 6.5 onwards.
Is my image uploaded to a server?
No. The conversion runs entirely in your browser using WebAssembly. Your image never leaves your device. The codec itself is downloaded from a public CDN (jsDelivr) the first time you use the tool, which is an ordinary file download and does not involve your image.
Is AVIF free to use commercially?
Yes. AVIF is built on AV1, which the Alliance for Open Media publishes under a royalty-free patent licence covering encoders, decoders and content distribution. That is a meaningful difference from HEIC, which relies on HEVC and is covered by paid patent pools.
Should I use AVIF or WebP?
AVIF files are typically 20–30% smaller than WebP at similar quality, so AVIF is the better choice for new work. WebP encodes much faster and has slightly broader support in older browsers, so it remains a reasonable default when you are processing very large batches.
Why does AVIF quality 50 look like JPEG quality 80?
The quality scales are not comparable between formats. AVIF quality numbers sit roughly 30 points below the JPEG number that gives similar perceived quality. Setting AVIF to 85 will usually produce a file larger than the JPEG you started with — which is why this tool defaults to 50.
Can I convert HEIC photos from my iPhone here?
Not with this tool — HEIC uses a different codec with different licensing. See our HEIC to JPG converter for that.

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