Disable WooCommerce Cart Fragments Outside the Shop
Stops the cart fragments script, which fires an extra uncached AJAX request on every page, everywhere except the shop, product, cart and checkout pages.
Snippet Library
Performance snippets for WordPress
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.
Disable the Heartbeat API Except in the Post Editor
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.
Find What Is Calling admin-ajax.php
Counts admin-ajax.php requests per action (and whether they come from the front end or the dashboard) for the current day and the previous six, and shows the busiest ones under Tools > AJAX Usage.
Slow Down the Heartbeat API
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.