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AVIF to PNG converter

Convert AVIF files to PNG inside this page. No upload, no limit on how many, no watermark.

  • 0 uploads
  • No limits
  • No signup
  • Works offline

AVIF and PNG, side by side

AVIFPNG
Released20191996
Compressionbothlossless
Transparencyyesyes
Animationyesno
Supportall current browsers; limited elsewhereeverywhere, without exception

What actually changes

Keeps transparency and stops any further quality loss, at the cost of a much larger file. The right choice when the image is going into an editor rather than onto a page.

AVIF is a still image stored as a frame of AV1 video, with 10- and 12-bit colour and HDR support, released in 2019. Its real strength is that roughly half the size of JPEG at similar quality, with far better handling of gradients and flat colour. The reason you are on this page is almost certainly the other side of that coin: slow to encode — seconds rather than milliseconds for a large image — and thin support outside browsers.

PNG arrived in 1996 and is a lossless format built around DEFLATE compression and a full alpha channel. It gives you pixel-exact reproduction and true transparency, which makes it right for screenshots, logos and line art. The trade-off worth knowing about before you commit: file sizes several times larger than a lossy format when the content is photographic.

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 OxiPNG, 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

  1. 01Add your AVIF filesDrop them on the page, click to browse, paste from the clipboard, or drop a whole folder.
  2. 02Conversion runs on your deviceEach file is decoded and re-encoded as PNG by a WebAssembly codec in a background thread. Nothing is uploaded.
  3. 03Adjust if you need toPNG has no quality setting; enable the lossless optimiser to shrink the result further.
  4. 04DownloadSave one file, or take the whole batch as a zip built on your device.

Questions people actually ask

Why convert AVIF to PNG?
AVIF is a still image stored as a frame of AV1 video, with 10- and 12-bit colour and HDR support. Its weakness is that slow to encode — seconds rather than milliseconds for a large image — and thin support outside browsers. PNG gives you pixel-exact reproduction and true transparency, which makes it right for screenshots, logos and line art, which is usually the reason people make this exact conversion.
Will I lose quality?
The conversion itself is lossless — PNG stores exactly what it is given. It cannot recover detail that AVIF already discarded, though, so the result preserves any existing artefacts perfectly.
Is there a file size or batch limit?
No. Nothing is uploaded, so there is no bandwidth to pay for and nothing to ration. The only ceiling is your own device’s memory.
Are my files uploaded?
No. Open your browser’s developer tools, watch the Network tab, and convert something — no request carries your file. The counter in the page header measures the same thing continuously.
Where is PNG supported?
Everywhere, without exception. PNG arrived in 1996, and file sizes several times larger than a lossy format when the content is photographic.

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