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MM Optimizer

Image optimization for WordPress that begins by asking what your server can actually do, then proposes settings to match.

Most optimization plugins present a wall of switches and leave you to guess. This one runs a detection pass, shows you a capability matrix built from real encoding tests, and recommends a configuration with the reason next to every choice.

It never modifies your original files.

Start here

Page	For
Installation	Getting it running
The Diagnostics screen	Reading what your server can do
Optimization levels	Choosing how hard to compress
Delivering images	Getting WebP and AVIF to browsers
Bulk conversion	Converting a library you already have
Migrating from another plugin	Coming from Converter for Media or EWWW
FAQ	Short answers

Developers: the technical reference lives in docs/.

What it produces

Measured on a real 2048×1367 photograph of 721,366 bytes at the Balanced level:

Format	Size	Saving
AVIF	244,780 B	−66%
WebP	380,730 B	−47%

Requirements

• WordPress 6.0 or later
• PHP 7.4 or later
• GD or Imagick with WebP and/or AVIF support — the plugin tells you which you have, and what to ask your host for if you have neither