Free Online PNG to AVIF Converter
Convert PNG to AVIF for next-gen compression. Free online conversion.
Max file size 10MB. Sign up for more.
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Checking files and selected output formats.
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PNG to AVIF: maximum compression for web delivery
AVIF uses the AV1 codec's intra-frame compression which employs prediction-based encoding, transform coding, and in-loop filtering to achieve 50% smaller files than JPG and 20-30% smaller than WebP. Converting a lossless PNG to AVIF applies lossy AV1 compression by default, producing dramatically smaller files. AVIF preserves alpha transparency, supports wide color gamut (Display P3, Rec. 2020), and handles HDR content — capabilities PNG matches only in file size terms.
When to convert PNG to AVIF
Convert PNG to AVIF for the smallest possible web images with the best visual quality per byte. AVIF is ideal for hero images, product photography, and media-heavy pages where every kilobyte of bandwidth matters. Check your audience's browser support and serve PNG or WebP as a fallback using the HTML picture element.
PNG vs AVIF: Side-by-side
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | PNG | AVIF |
|---|---|---|
| Full name | Portable Network Graphics | AV1 Image File Format |
| Year introduced | 1996 | 2019 |
| Developer / standard body | PNG Development Group / W3C | Alliance for Open Media |
| MIME type | image/png | image/avif |
| File extension | .png | .avif |
| Compression | Lossless (DEFLATE) | Lossy or lossless (AV1) |
| Color / data depth | 24-bit truecolor + 8-bit alpha | 8/10/12-bit |
| Max dimensions / size | 2,147,483,647 × 2,147,483,647 px | 65,536 × 65,536 px |
| Transparency | Yes | Yes |
| Animation | APNG extension only | Yes |
| Standard / specification | W3C / ISO/IEC 15948 | AOMedia AV1 |
| Best for | Logos, screenshots, graphics with transparency or sharp edges | Next-gen web images — 50% smaller than JPG, 20% smaller than WebP |
About the PNG Format
PNG (Portable Network Graphics) is a lossless image format created in 1996 as a patent-free replacement for GIF. It uses DEFLATE lossless compression, meaning every pixel is preserved exactly as intended — no visual information is discarded during encoding. PNG was developed by the web community and standardized by the W3C and ISO, making it one of the most trusted and universally supported image formats available.
PNG is best suited for screenshots, graphics, logos, and any image that requires transparency. Its support for a full alpha channel allows smooth, semi-transparent edges that blend seamlessly with any background. The main trade-off is file size — PNG files are significantly larger than JPEG for photographic content because no visual data is discarded. PNG does not natively support animation; for animated sequences, APNG (Animated Portable Network Graphics) serves as its extension.
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