PNG to AVIF: Shrink Web Images Without Visible Loss

PNG files are reliable, but they are often far larger than necessary for web delivery. If you are serving PNGs on a website and page speed matters, converting to AVIF can cut file sizes by 50-80% with minimal visible quality loss.

Try it here: PNG to AVIF.

Why AVIF is worth considering for web images

AVIF uses the AV1 codec, which was designed for efficient compression. Compared to PNG:

• Photos and gradients compress dramatically better
• Transparency is supported (unlike JPG)
• File sizes are typically much smaller than both PNG and WebP for equivalent visual quality

For sites where images make up a large share of page weight, switching to AVIF can noticeably improve load times.

When PNG to AVIF makes the most difference

The biggest gains come from:

• Product photos stored as PNGs with transparency. AVIF handles transparency at a fraction of the size.
• Screenshots and UI images where PNG files balloon due to large dimensions.
• Hero images and banners that are currently served as unoptimized PNGs.

If your PNG is already tiny (a small icon or a simple graphic with few colors), the savings may be marginal. For anything larger, the difference is usually significant.

AVIF vs WebP for PNG replacement

Both are modern formats, but they have different strengths:

• AVIF generally produces smaller files at the same quality, especially for photographic content.
• WebP has broader browser support today and encodes faster.

A practical approach is to serve AVIF with a WebP fallback. If you only want one format, check your analytics to see what your visitors’ browsers support.

Convert to WebP instead: PNG to WebP.

How to convert PNG to AVIF (private, no uploads)

1. Open: PNG to AVIF
2. Drop your .png file(s).
3. Convert and download.

QuickImager processes everything locally in your browser. Nothing is uploaded to any server.

A workflow for optimizing existing site images

If you have a folder of PNGs powering your site:

1. Convert them to AVIF: PNG to AVIF
2. Compare file sizes and spot-check visual quality
3. For photos without transparency, also consider: JPG to AVIF
4. If you ever need to go back to PNG: AVIF to PNG

Related reading

• Comparing modern formats: AVIF vs WebP
• When you need AVIF converted back: AVIF to JPG

FAQ

• Does AVIF support transparency? Yes. AVIF supports alpha channels, making it a strong replacement for transparent PNGs at much smaller file sizes.
• Will AVIF work in all browsers? AVIF is supported in Chrome, Firefox, Safari 16+, and Edge. Older browsers will need a fallback format like WebP or PNG.
• Is this conversion private? Yes. QuickImager converts locally in your browser with no uploads.

Convert now: PNG to AVIF.