UtilStax

Convert PNG to AVIF

Free, instant PNG to AVIF conversion - processed entirely in your browser, nothing is uploaded.

AVIF squeezes graphics and photos harder than WebP while still supporting transparency, so it is the smallest practical replacement for heavyweight PNGs on the web. It shines for hero images and photographic content where PNG's lossless encoding produces multi-megabyte files. Because AVIF is lossy by default, keep the PNG original as your editing master - and if your browser doesn't offer AVIF encoding yet, WebP output captures most of the same savings.

Drop images here

or click to browse. Supports JPG, PNG, WebP, HEIC, and more. Batch supported.

Processed entirely in your browser

Frequently asked questions

Does AVIF support transparency like PNG?

Yes, AVIF has full alpha channel support, so transparent images keep their transparency. The compression is lossy by default, though, so treat AVIF as a delivery format and keep the PNG source.

Where does AVIF not work?

All current major browsers display AVIF, but many non-browser apps - older image viewers, Office, some upload pipelines - still reject it. If the image must open anywhere, WebP or JPG is safer.