How to use it
- Drop your PNG images here.
- Set the quality (80% is a good start).
- Convert, then download the AVIF or a ZIP.
When AVIF is the right choice
For photo-like PNGs headed to a website (product shots on a transparent background, illustrations, renders) AVIF can drop to a fraction of the PNG size. Every current browser displays it: Chrome, Edge, Firefox and Safari 16 and later.
For logos, icons and screenshots with sharp text, PNG may still be better; try Compress PNG for a much smaller file that still looks lossless.
It's slower: what to expect
AVIF encoding is heavy: a large image can take 5–20 seconds, because the encoder (libavif, about 1 MB) works in a background thread in your browser. The page stays responsive meanwhile.
If an older app can't open AVIF, make a WebP or JPG copy too. Nothing is uploaded.
Frequently asked questions
Is transparency kept?
Yes, AVIF supports an alpha channel.
How much smaller will it be?
It depends on the image; photo-like images often end up a tenth to a fifth of the PNG, simple graphics less so.
Can Windows and Mac open AVIF?
Windows 11 and macOS Ventura and later support it natively; on older systems any modern browser will.
Last updated: November 13, 2026