Convert PNG to AVIF
PNG is lossless and AVIF is not, which makes this the conversion to be deliberate about. Sending a PNG to AVIF regularly turns a multi-megabyte screenshot or export into something a fraction of the size, and for an image destined for a web page that is usually a straight win. For a master copy you intend to edit again it is not: whatever the encoder discards here is gone for good.
Drop your PNG files below and download AVIF in seconds. Free, unlimited and completely private: the conversion runs inside your browser, so your files never leave your device and are never uploaded to a server.
No upload. Works with your network switched off. Check it yourself, or read what actually happens to your file.
Why convert PNG to AVIF?
The other reason people land on this conversion is transparency. PNG has been the default for logos, UI assets and anything with a cut-out background for decades, and AVIF is one of the few formats that keeps a real alpha channel while compressing far harder than PNG can. Flat graphics with large areas of solid colour are exactly where PNG's own lossless compression is already strong, so the saving there is modest. Photographic PNGs, gradients and detailed artwork are where the difference gets dramatic.
PNG stores every pixel exactly as it was saved, which makes it the safe choice whenever detail matters more than file size. It supports a full alpha channel, so logos and UI elements keep clean, soft edges on any background. The tradeoff is that photos saved as PNG can get large.
AVIF is based on the AV1 video codec and reaches even smaller files than WebP at the same visual quality. All modern browsers can display it, but many image editors and older tools cannot open it yet, which is the main reason people convert AVIF to an older format.
What this converter does to your PNG file
Your browser decodes the PNG, then libavif, compiled to WebAssembly and running on your device, encodes those pixels as AVIF. The encoder is about 3.4 MB and is fetched on your first AVIF conversion rather than on page load. Transparency survives: the alpha channel is stored as a separate auxiliary image inside the AVIF, so a cut-out background stays cut out with its soft edges intact instead of being flattened onto white. Everything else is a lossy step, unlike the PNG you started with. The quality slider maps onto libavif's 0 to 100 scale, and colour is written as 8 bit with 4:2:0 chroma subsampling, so the output is never a pixel-for-pixel match for the original.
PNG vs AVIF at a glance
| PNG | AVIF | |
|---|---|---|
| Full name | Portable Network Graphics | AV1 Image File Format |
| Compression | Lossless | Lossy or lossless |
| Transparency | Yes | Yes |
| Best for | Logos, screenshots and graphics with transparency | Next generation web images |
What changes when you convert PNG to AVIF
| What happens | |
|---|---|
| Image quality | Reduced, by however much you choose. AVIF is lossy; the quality control above sets the trade. Keep the PNG original if you may need to edit it again. |
| Transparency | Kept. AVIF stores an alpha channel, so cut-out backgrounds and soft edges survive. |
| EXIF and GPS | Removed. The conversion goes through a pixel buffer, so camera data and location are not carried into the AVIF file. |
| Colour profile | Not carried across. The image is handled in sRGB, which is right for the web and wrong for colour-managed print work. |
| Animation | Not applicable. PNG files here are single images. |
| File size | Smaller in almost every case, which is the reason for the conversion. How much smaller depends on the picture, so no figure is quoted here. |
How to convert PNG to AVIF
- Drop one or more PNG files into the box above, or click to browse.
- ImageConvert converts each file to AVIF right on your device.
- Download a single file, or grab everything at once as a zip.
Frequently asked questions
Does the transparent background survive?
Yes. AVIF supports a real alpha channel and this converter keeps it, storing it as an auxiliary image alongside the colour data. A logo with a cut-out background stays cut out, and soft anti-aliased edges stay soft rather than hardening onto a solid colour.
Is PNG to AVIF lossless?
No. This converter always encodes lossy AVIF, even with the quality slider at 100 percent, in part because colour is stored with 4:2:0 chroma subsampling. AVIF does define a lossless mode, but it is not what runs here. If every pixel has to be preserved exactly, stay on PNG.
What is a PNG file?
PNG is a lossless format with transparency support, ideal for graphics, logos and screenshots.
What is an AVIF file?
AVIF is a next generation format with excellent compression, increasingly used on modern websites.
Is it free to convert PNG to AVIF?
Yes. There are no limits, no watermarks and no account needed. Convert as many PNG files as you like.
Are my files private?
Completely. Your PNG files never leave your browser and are never uploaded to a server, so your images stay on your device.