Convert PNG to AVIF Online — No Upload, No Watermark
AVIF is the smallest mainstream image format — typically 50 percent smaller than PNG at equal visual quality. Use it on the web when browser support is acceptable.
Drop image (PNG/JPG/WebP/AVIF/HEIC)
Up to 50 MB
Where PNG files come from
AVIF is the smallest of the mainstream web formats, and the conversion is for sites where image weight is the bottleneck and browser support is acceptable.
What changes when you convert PNG to AVIF
| Encoding | PNG re-encoded to AVIF |
|---|---|
| File size | Often around half a comparable WebP, and far below the PNG |
| Transparency | Preserved |
Worth knowing first
AVIF encoding is slow, since it uses the AV1 video codec on a single frame, and it runs on your own processor here. It is also the least supported of the formats on this page outside browsers, so keep a WebP or JPEG fallback for anything that might be downloaded and opened elsewhere.
FAQ
Why does this take so long?
AVIF compresses using AV1, a video codec that does a great deal of work per frame. That effort is what buys the small file, and the encoding happens on your machine rather than a server.
Can I use AVIF everywhere on my site?
In a picture element with a WebP or JPEG listed after it, yes. As the only format, be careful: browser support is good but desktop applications and older devices frequently cannot open an AVIF that a visitor downloads.
How much smaller is it really?
Against PNG the saving is dramatic for photographic content. Against WebP expect roughly half, depending on the image. Flat graphics with few colours are where PNG can still compete.
Is this PNG to AVIF converter free, with no upload?
Yes. The image is decoded and re-encoded in your browser using a Canvas + Wasm pipeline — it never uploads. No signup, no watermark.