Convert PNG to AVIF

Convert static PNG files to AVIF locally in your browser with quality control, lossless mode, and transparency.

Private by design: your images never leave your device.

Static PNG files

Transparency is preserved. Metadata and color profiles are not copied.

Drop PNG files here

or choose files

Up to 20 files, 100 MiB each

Compression mode

Higher usually means better fidelity, but does not guarantee a specific file size.

Smaller fileGood visual quality with usually much smaller files. Color data is compressed lossily; transparency is preserved.LosslessPreserves the normalized 8-bit raster without further pixel loss. The file can become larger than the PNG.

Quality

Compression effort

Selected files

0 / 20

Drop PNG files here

Good to know

The PNG to AVIF converter runs a real libavif/libaom encoder in a Web Worker directly in your browser, rather than the simple canvas conversion other format converters use. You can choose a lossless mode that keeps the normalized 8-bit raster without further pixel loss, or a lossy mode for significantly smaller files with transparency preserved.

Typical searches include convert PNG to AVIF, PNG to AVIF online, and create modern web images. Besides quality, the compression effort can be chosen between Fast, Balanced, and Smallest file. 16-bit PNGs are reduced to 8 bits per channel, animated PNG files are not yet supported, and automatic website preparation caches application resources for offline use, never selected images.

Typical use cases

Check lossless archiving with a smaller file size

Use the lossless mode when every pixel must be preserved — note that the AVIF file can end up larger than the original PNG.

Strongly compress large PNG graphics for the web

Choose the lossy mode with a suitable quality to significantly shrink transparent graphics without losing transparency.

Tips for better results

Match compression effort to waiting time

“Fast” delivers a result quickly, “Smallest file” takes longer but compresses more efficiently — “Balanced” is a good middle ground.

Check 16-bit PNGs beforehand

16-bit PNGs are reduced to 8 bits per channel — this can become visible in images with very fine color gradients.

How it works

Step by step

1
Add PNG files
Drop up to 20 static PNG files, each up to 100 MiB.
2
Choose the compression mode and quality
Choose lossless or lossy, the quality, and the compression effort.
3
Download the AVIF files
Download the converted files individually or bundled as a ZIP.

Features

Lossless or lossy

Choose between exact pixel preservation and a significantly smaller, compressed file.

Real AVIF encoder in a worker

A libavif/libaom encoder runs in a Web Worker for faithful AVIF compression.

Offline preparation without images

The website automatically prepares all tools for offline use and caches only application resources, never selected images.

Frequently asked questions

Are animated PNG files supported?

No, animated PNG files are not yet supported — only static PNGs can be converted.

Are my images uploaded?

No. Compression runs entirely locally in the browser via a Web Worker.

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