Snippet Library
Snippets that make WordPress lighter and faster: remove emoji scripts and embeds, control the Heartbeat API, limit revisions and load scripts only where they are needed. For developers and site owners chasing better Core Web Vitals.
Stores the responses of public GET requests to the REST API (such as post lists used by headless front ends and block widgets) for a few minutes for logged-out visitors, and clears the cache when content changes.
Removes rarely used tags from the page head: RSD, Windows Live Writer manifest, shortlink, adjacent post links and the REST API discovery link.
Keeps the Heartbeat API (autosave and post locking) in the editor but turns it off on every other admin and front-end page to save server requests.
Times every request your site makes to other servers (update checks, APIs, license servers) and records the ones slower than a second under Tools > Slow HTTP Calls, so you can find what is holding up page loads.
Reduces admin AJAX traffic by running the Heartbeat API every 60 seconds instead of every 15 to 60, and turns it off on the front end.