Lossless source · modern compression

Free PNG to AVIF Converter Online PNG in. AVIF out. Half the bytes, full alpha.

Lossless PNGs re-encoded through AV1 — half the size at indistinguishable quality, alpha channel preserved, all in your tab. Conversion runs instantly in your browser tab — no upload, no cloud, no per-seat ladder.

Convert PNG → AVIF →
Drop a file here
PNG → AVIF
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Reads and writes inside this tab. Nothing is sent anywhere.

What it actually does

01
DECODE

PNG decoded by the browser. Alpha channel intact.

Lossless source. Every pixel exact.

02
ENCODE

AVIF written at high-quality settings, with alpha.

Roughly half the file size of the source PNG. Visually indistinguishable in most cases.

03
KEEP

Files stay on your device.

Local-first by architecture.

04
BATCH

Drop a folder.

Each PNG becomes an AVIF independently.

How it works

  1. Open morph.cool in any modern browser.
  2. Drop your .png file onto the drop zone, or click to browse.
  3. Pick AVIF as the output format.
  4. Download your converted .avif file. Done in seconds.
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Why it lives in the tab

PNG is one of the great lossless image formats — but it was designed in 1996, before perceptual video codecs were a thing. AVIF, which inherited everything AV1 learned about predicting pixels, can hit the same visual quality at roughly half the file size. The conversion runs in the browser tab, so neither file ever needs to leave your device.

Frequently asked

Will I lose quality going PNG to AVIF?

AVIF lossy at high quality is visually indistinguishable from a lossless PNG. AVIF also has a lossless mode if you need pixel-exact output.

Does the alpha channel come over?

Yes. AVIF supports proper alpha, so transparent PNGs convert cleanly.

Why does AVIF beat PNG on size?

PNG uses DEFLATE — a 1990s general-purpose compression algorithm. AVIF uses AV1 — a 2020s perceptual video codec. The codec gap is 20 years.

Will browsers show the AVIF?

Modern browsers handle AVIF natively. For older clients, ship a PNG fallback via .

Is there a lossless AVIF mode?

Yes — AVIF supports lossless. It's still smaller than PNG. Drop the file into Artboard for explicit control.

While you're here morph.cool — every tool Artboard image editor JPG → WebP PNG → WebP HEIC → JPG
Convert PNG → AVIF