mynify

JPG to AVIF. Next-gen, tiny.

Convert JPGs to AVIF for the smallest modern web images — entirely on your device, nothing uploaded.

  • Never uploaded
  • No limits
  • No signup
  • Free forever

JPG to AVIF, in your browser

AVIF is the newest mainstream web image format and the most efficient — typically 30–50% smaller than JPG at comparable quality, and smaller than WebP too. For websites chasing fast load times and top Core Web Vitals, converting images to AVIF is one of the biggest wins available. Mynify converts on your device, with nothing uploaded.

The trade-off

AVIF’s compression is outstanding, but it’s newer than WebP, so while every current browser displays it, some older desktop apps and email clients don’t. Use AVIF for web-facing images; keep JPG (or WebP) for anything headed into legacy software.

When to use it

Tip

AVIF encoding is more intensive than JPG, so very large images take a moment. Pair with resize if the source is larger than it displays.

Free, unlimited, no signup, no watermark — processed entirely on your device.

Frequently asked questions

How small is AVIF?

AVIF is the most efficient common web image format — often 30–50% smaller than JPG at similar quality, beating even WebP. It's excellent for fast-loading sites.

Does everything support AVIF?

All current browsers display AVIF, but support is newer than WebP — some older software and email clients don't read it. Use it for the web; keep JPG for legacy destinations.

Is my image uploaded?

No — the conversion runs entirely in your browser; your file never leaves your device.

Related tools

PNG to AVIF JPG to WebP Compress Image