Image Format Comparison

AVIF vs PNG: Next-Gen Compression vs Lossless Classic

AVIF achieves the same visual quality as PNG with a fraction of the file size for photographic content. But the comparison isn't simple: PNG is lossless by design, AVIF's lossless mode is rarely better than PNG, and PNG's 100% browser support means zero compatibility risk. AVIF wins on compression for photos; PNG wins on universality and lossless graphics.

AVIFvsPNG

Quick Verdict

Use AVIF when…

Use AVIF for photos and complex images on the web where file size is critical. AVIF's compression is dramatically better than PNG for photographic content.

Use PNG when…

Use PNG for images with transparency that need lossless quality (icons, logos, UI elements), software screenshots, or when serving to browsers without AVIF support.

AVIF vs PNG: Feature Comparison

Feature	AVIF	PNG
Compression type	Lossy and lossless modes	Lossless only
File size (photos)	50-70% smaller than PNG	Baseline
File size (graphics)	Comparable or slightly larger	Often smaller for flat colours
Transparency (alpha)	Yes — lossy or lossless	Yes — always lossless
Animation	Yes	No (see APNG)
Browser support (2024)	~94% global coverage	100% — universal
Encoding speed	Slow	Fast
HDR support	Yes — native HDR	Limited

When AVIF wins

✓Compression type: Lossy and lossless modes
✓File size (photos): 50-70% smaller than PNG
✓File size (graphics): Comparable or slightly larger

When PNG wins

✓Compression type: Lossless only
✓File size (photos): Baseline
✓File size (graphics): Often smaller for flat colours

Frequently asked questions

Should I replace all my PNGs with AVIF?

For photographic images: yes, AVIF is dramatically smaller. For logos, icons, and UI elements with flat colours: PNG is often smaller in lossless mode and guaranteed compatible. Use the <picture> element to serve AVIF to supporting browsers with PNG fallback: <picture><source srcset='image.avif' type='image/avif'><img src='image.png'></picture>

Can AVIF replace PNG for transparent images?

AVIF supports alpha transparency in both lossy and lossless modes. Lossy AVIF with transparency achieves much smaller files than PNG — but the alpha channel also gets some compression. For UI elements where pixel-perfect transparency is critical, test carefully before deploying.