How much smaller is AVIF compared to PNG?
AVIF is typically 60% to 80% smaller than PNG for photos and 30% to 50% smaller for graphics with transparency. This makes it one of the best choices for web images that need alpha channel support.
Convert PNG to AVIF Online
Smaller files with transparency, free, no upload required
Convert your PNG images to AVIF format for much smaller file sizes while keeping full transparency support. AVIF is especially useful for logos, icons, product images and UI elements on modern websites.
60-80% smaller
vs equivalent PNG
Transparency kept
Full alpha channel
No uploads
Files stay on your device
60
Smaller fileBetter quality
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.
PNG vs WebP vs AVIF for transparent images
When your images need transparency, JPEG is not an option. Here’s how the modern formats compare:
| Format | Size vs PNG | Transparency | Browser Support |
|---|---|---|---|
| PNG | Baseline | Yes | 100% |
| WebP | ~26% smaller | Yes | 97% |
| AVIF | 60-80% smaller | Yes | 90%+ |
Frequently asked questions
Is transparency preserved when converting PNG to AVIF?
Yes. AVIF fully supports transparency. Transparent backgrounds, shadows, and UI elements convert correctly without losing quality.
Why does AVIF conversion take longer?
AVIF uses a more advanced compression method based on the AV1 video codec. This makes encoding slower in the browser, but the significant file size reduction is usually worth the extra time.
Should I use PNG to AVIF or PNG to WebP?
Use AVIF for the best compression on modern browsers. Use WebP if you need faster conversion and slightly broader support (97% vs ~90%). For most new web projects, AVIF is the better long-term choice.
Are my files uploaded to a server?
No. All processing happens locally in your browser using WebAssembly. Your images never leave your device.