Why does this work when the PNG to AVIF converter often doesn't?

Browser support for AVIF is asymmetric: decoding (reading) AVIF files is broadly supported in modern Chrome, Firefox, and Safari, but encoding (writing) AVIF from a canvas is much less consistently available. Since this tool only needs to decode, it works reliably almost everywhere AVIF viewing is supported at all.

Does it lose quality converting from AVIF's lossy compression?

No additional quality is lost in this conversion step — PNG is lossless, so whatever pixels the browser decodes from the AVIF file are preserved exactly. Any quality loss already happened when the AVIF was originally encoded.

Is transparency preserved?

Yes. AVIF supports a full alpha channel, and the decoded pixel data (including alpha) is carried through unchanged into the PNG output.

What if my browser can't decode AVIF at all?

On an older browser without AVIF support, the upload step will fail to decode the file and show a clear error rather than producing a broken or blank result.

AVIF to PNG Converter - Convert AVIF Images Online

Overview

Introduction

AVIF is a modern, highly efficient image format, but not every tool or workflow supports it yet.

This converter decodes an AVIF file using your browser's own native support and re-encodes it as a universally compatible PNG.

What Is AVIF to PNG Converter?

A format converter that leans on the browser's built-in AVIF decoder (via createImageBitmap, the same mechanism the shared PNG upload panel already uses for every supported format) rather than a hand-rolled decoder, since AV1-based AVIF decoding is genuinely complex and already implemented natively.

The pure lib function only validates the already-decoded pixel buffer; all actual AVIF parsing is delegated to the browser.

How AVIF to PNG Converter Works

The uploaded AVIF file is handed to the browser's createImageBitmap API, which decodes it using the platform's native AV1/AVIF codec support, then painted onto an off-screen canvas to extract raw RGBA pixel data.

Those pixels are validated and cloned by a pure function, then handed to the standard PNG preview/download panel for lossless re-encoding.

When To Use AVIF to PNG Converter

Use it when you have an AVIF image but need a PNG for a tool, platform, or workflow that doesn't yet support the newer format.

It's also useful for extracting a specific AVIF's exact pixel data for further editing in a PNG-only image editor.

Often used alongside PNG to AVIF Converter and PNG to HEIF Converter.

Features

Advantages

Relies on the browser's own native, battle-tested AVIF decoder rather than a hand-rolled one, so decoding is fast and accurate.
Runs entirely client-side; the uploaded file never leaves your browser.
Fully preserves the decoded image's alpha channel.

Limitations

Decode success depends on your specific browser's AVIF support; very old browsers may not be able to open the file at all.
Any quality loss from AVIF's lossy compression already happened at encode time and can't be recovered by this conversion.

Examples

Photo exported as AVIF

Input

A 1920x1080 AVIF photo

Output

A pixel-accurate PNG matching what the browser decoded

The browser's native decoder handles the complex AV1-based compression; the PNG output reflects exactly those decoded pixels.

AVIF with transparency

Input

A UI graphic with an alpha channel, in AVIF

Output

A PNG with matching per-pixel transparency

AVIF's alpha channel support carries through unchanged into the PNG.

Best Practices & Notes

Best Practices

Use a modern, up-to-date browser for the most reliable AVIF decode support.
If the file fails to load, verify it's a genuine AVIF and not simply misnamed — try opening it directly in a new browser tab first.

Developer Notes

convertAvifPixelsToPng is a thin validate-and-clone pure function; all real decoding work is delegated to the browser's native createImageBitmap, the same architecture already used by webp-to-png-converter for a format with similarly strong native decode support.

AVIF to PNG Converter Use Cases

Converting a modern AVIF photo for use in a PNG-only workflow
Extracting pixel data from an AVIF asset for further editing
Sharing an AVIF image with someone whose tools don't yet support the format

Common Mistakes

Assuming every browser can decode AVIF — support varies, especially on older devices.
Expecting the PNG to look 'better' than the source AVIF — this conversion can't recover detail already lost to AVIF's lossy compression.

Tips

If decoding fails, try opening the AVIF file directly in a browser tab to confirm your browser actually supports the format before troubleshooting further.
For a completely lossless workflow end to end, source images as PNG from the start rather than round-tripping through AVIF.

AVIF to PNG Converter