WordPress News
Autoptimize 3.1.16 Released
What’s new in Autoptimize 3.1.16
Released: 2026-09-26
Active installations: 800,000
Tested up to WordPress 7.1.2
Requires PHP 7.4
Changelog
- Security: overall hardening of Autoptimize, e.g. replacing some regular expressions with a more modern, safer approach.
- CSS minification: fixes for problems with alpha channel of rgb()/hsl() colors (thanks to @hinnerk-a)
- Critical CSS: improvements to job queueing and settings page tweaks
- confrimed OK with WordPress 7.1
Previous releases
3.1.15.1
- fix for “Uncaught Error: Using $this when not in object context” when preloads are set
3.1.15
- also add fetchpriority=high to preload set on Extra tab
- improve exit survey display in RTL languages
- security enhancements for 2 authenticated stored XSS issues responsibly reported by stealhcopter and bashu
- multiple minor changes/ improvements/ bugfixes, see the GitHub commit log.