Convert PNG to AVIF — Free, Private, No Upload
Convert PNG images to high-quality AVIF format instantly. No upload, batch processing, free.
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How to Convert PNG to AVIF
Select your PNG files
Choose files or drag and drop them into the converter. Any image format is accepted.
Convert to AVIF
Conversion starts automatically with optimized defaults. Adjust quality in advanced settings.
Download
Download converted files individually or as a ZIP archive.
Why Convert PNG to AVIF?
AVIF is the most efficient image format available today. Converting PNG to AVIF can reduce file sizes by 50–70% while maintaining transparency and visual quality comparable to the original. For websites, this means dramatically faster loading times and lower bandwidth costs.
AVIF is based on the AV1 video codec and offers superior compression for both photographic and graphic content. It supports transparency (alpha channel), wide color gamut, and HDR. Major browsers including Chrome, Firefox, and Safari all support AVIF.
LeanImg converts your PNG files to AVIF right in your browser — images never leave your device. There is no server upload, no account needed, and the service is completely free. Conversion takes a few seconds per image thanks to optimized WebAssembly codecs.
AVIF encoding is slower than WebP or JPG due to its advanced compression algorithms, but the file size savings are worth the wait for web delivery. Need broad compatibility? Try PNG to WebP as a more widely supported alternative.
PNG vs AVIF
| Feature | PNG | AVIF |
|---|---|---|
| File Size | Large | 50–70% smaller |
| Transparency | Yes | Yes |
| Compression | Lossless | Lossy or lossless |
| Browser Support | Universal | Chrome, Firefox, Safari |
| Best For | Graphics, editing | Web delivery (next-gen) |
| Encoding Speed | Fast | Slower |
Frequently Asked Questions
How to convert PNG to AVIF?
Go to LeanImg in any browser, drop your PNG files into the converter, and download AVIF versions in seconds. The tool is free, requires no sign-up, and processes files locally. Your images are never uploaded to any server. Multiple files can be converted at once.
Is it safe to convert PNG to AVIF online?
Yes. LeanImg converts images entirely in your browser using WebAssembly codecs. No files are uploaded, no data is stored remotely, and your images never leave your device. The process is completely private and as secure as working offline.
How to convert PNG to AVIF on Mac?
Open any browser on your Mac and navigate to LeanImg. Drop your PNG files into the converter and download AVIF files instantly. No software installation required. Safari, Chrome, and Firefox on macOS all work perfectly with the tool.
Does AVIF support transparency?
Yes. AVIF fully supports alpha transparency, just like PNG. Transparent backgrounds and semi-transparent effects are preserved during conversion. AVIF achieves this while producing dramatically smaller files, often 50–70% smaller than the equivalent PNG.