Smaller files with transparency, free, no upload required
PNG files are large. AVIF achieves 60 to 80% smaller file sizes than PNG for photographs while preserving full transparency support. For web images, switching from PNG to AVIF is one of the most impactful performance improvements you can make. Note: AVIF encoding is compute-intensive and may take several seconds per image.
60-80% smaller
vs equivalent PNG
Transparency kept
Full alpha channel
No uploads
Files stay on your device
AVIF encoding is compute-intensive. Conversion may take 5 to 30 seconds per image. All processing runs in your browser.
Drop PNG files here or click to browse
All processing stays in your browser. Nothing is uploaded.
If your PNG images have transparent backgrounds, you have three modern format options. JPEG is not one of them because JPEG does not support transparency.
| Format | File size vs PNG | Transparency | Browser support |
|---|---|---|---|
| PNG | Baseline | Yes | Universal |
| WebP | ~26% smaller | Yes | 97% of browsers |
| AVIF | 60-80% smaller | Yes | 90%+ of browsers |
AVIF is typically 60 to 80% smaller than PNG for photographic content and 30 to 50% smaller for graphics. The saving over PNG is larger than WebP's saving over PNG because AVIF uses a more efficient compression algorithm. A 500KB PNG may become a 100 to 200KB AVIF at comparable visual quality.
Yes. AVIF supports a full alpha channel for transparency. Transparent backgrounds, semi-transparent shadows and layered graphics all convert correctly. This makes PNG to AVIF particularly useful for product images, logos and UI elements where transparency is essential.
AVIF uses the AV1 video codec compression algorithm, which is computationally intensive. Browser-side encoding via WebAssembly typically takes 5 to 30 seconds per image depending on image dimensions and device speed. This is a known characteristic of AVIF encoding. Decoding for display is much faster.
For maximum compression and modern browsers, choose AVIF. For slightly less compression but faster encoding and broader compatibility (97% vs 90% browser support), choose WebP. For most web projects in 2024 and beyond, AVIF is the better long-term choice, especially for product photography and large images.
No. All conversion happens entirely in your browser using WebAssembly. Your files never leave your device.