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Autoptimize 3.1.15.1 Released

high confidence based on 1 community posts

What’s new in Autoptimize 3.1.15.1

Released: 2026-04-04

Active installations: 800,000

Tested up to WordPress 6.9.5

Requires PHP 7.1

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.

3.1.14

improve HTML output for <link rel=”preload” images (based on report by Muhammad)
let the 404-handler issue a 302 iso 301 HTTP response (as mentioned by thefitrv)
small improvement in critical CSS cron job handling in case of an empty “time limit” (thanks for the help Jason)
fix bug in “domain binding” in critical CSS advanced options (reported by Hazel)
catch and report (exceptional) JS optimization issues causing preg_replace_callback to crash out (in case of a huge amount of JS code), thanks siliconforks