PNG to AVIF Converter

Convert PNG to AVIF for dramatic file-size savings while preserving transparency.

Why convert PNG to AVIF?

AVIF can represent the same image as PNG at 70–90% smaller file size, with optional lossless mode if you need bit-perfect preservation. AVIF supports transparency and HDR, so it's a true superset of PNG for delivery purposes. The downside is encoding time and slightly less editor compatibility. For web delivery this is one of the highest-impact format swaps you can make. Everything is processed in your browser via WebAssembly.

Drop a photo to convert it

Or click to pick. Works with PNG, JPEG, WebP, AVIF, JPEG XL, GIF, BMP, and iPhone HEIC.

Tip: paste a screenshot from your clipboard (⌘V or Ctrl+V).

About PNG

PNG is lossless and ubiquitous but file-size-inefficient by modern standards.

PNG was designed in 1996; AVIF in 2019
AVIF lossless mode is typically 30–60% smaller than PNG
AVIF lossy mode is typically 70–90% smaller than PNG

Frequently asked questions

Should I use lossy or lossless AVIF?

Lossless AVIF preserves every pixel and is typically 30–60% smaller than PNG. Lossy AVIF is dramatically smaller (70–90% reduction) at quality settings indistinguishable from the source for most use cases.

Is the transparency preserved?

Will my browser show AVIF correctly?