Image format · modern compression

Free JPG to AVIF Converter Online JPG in. AVIF out. Same look, half the bytes.

Re-encode photos through the AV1 codec for half the file size at indistinguishable quality — without sending anything to a server. Conversion runs instantly in your browser tab — no upload, no cloud, no per-seat ladder.

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

What it actually does

01
DECODE

JPG parsed by the browser's own decoder.

We hand off the bytes; the browser paints the pixels. Then we re-encode.

02
ENCODE

AVIF written using the AV1 codec at high-quality settings.

Typically half the size of the source JPG at equivalent visual quality.

03
KEEP

Files stay on your device.

Local-first by architecture. No upload, no cloud roundtrip.

04
BATCH

Drop a folder; convert in parallel.

Each JPG becomes an AVIF independently.

How it works

  1. Open morph.cool in any modern browser.
  2. Drop your .jpg 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

JPEG is 30 years old. AVIF is the format that finally wins on every dimension: better compression, support for HDR and wide color gamut, support for transparency, support for animation. The only reason to stay on JPG today is universal client support. Once you're shipping an AVIF copy alongside the JPG fallback, you've cut your image bandwidth roughly in half. We do the encode in the tab, so the original JPG never leaves your machine.

Frequently asked

Why convert JPG to AVIF?

AVIF is significantly more efficient at compressing photographic content. For the same visual quality, the file is typically half the size.

Will browsers display the AVIF?

Modern browsers (Chrome, Firefox, Safari, Edge — all 2022+) display AVIF natively. Older clients may not. Use a tag with a JPG fallback for legacy support.

Does double-encoding hurt quality?

Going JPG → AVIF passes through two lossy codecs. There's some accumulated loss, but at high quality settings it's invisible to the human eye.

Can I compare AVIF and JPG side-by-side?

Drop both into the Artboard image editor for pixel-level inspection.

Is the encoder fast?

Modern AV1 encoders are slower than JPEG — expect a few seconds per image. The trade is for the ~50% size reduction.

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