I released AOPro 2.2 today and the main new feature is the ability to delay the loading/ rendering of iFrames. Despite the fact iFrames can be lazy-loaded (using browser-native
loading=lazy attribute), in reality this does not always work in WordPress, hence the new “delay iFrames” option on the Pro Boosters tab.
- How it works: a delayed iFrame has no src but a data-src attribute. Upon user interaction (or a timeout as also specified on the Boosters settings) the src will be set. If the iFrame is a YouTube, Vimeo or Dailymotion video, AOPro will load the video thumbnail as a placeholder.
- How you can activate it: by default no iframe is delayed, if you want to have e.g. YouTube video’s delayed add youtube.com to the “delay iFrames” option.
- What’s next: this is a “minimal viable product”, but depending on user feedback I might incorporate some of WP YouTube Lyte’s functionality for video iFrames. Tell me what you think in the comments!
Apart from delaying iFrames, AOPro 2.2 also has;
- new under the hood logic to improve the speed at which Critical CSS rules are generated and visible
- if you are “removing CSS/ JS” then the logic change this at a per page/ post level has changed; if you want one page NOT to remove CSS/ JS, just enter
nonein the “Autoptimize this page” metabox. If you leave the field empty the default “removals” apply. If you put something else in there then that overrides the default removals.