Browser and CDN Caching Headers for Visitors
Sends Cache-Control headers on public pages for logged-out visitors, so a CDN or proxy can cache them for a few minutes.
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.
Browser and CDN Caching for Feeds and Sitemaps
Sends cache headers on RSS feeds and XML sitemaps so feed readers, crawlers and CDNs can reuse them for an hour instead of making WordPress rebuild them on every request.
Cache Public REST API Responses for Visitors
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.
Clean Up the Page Head
Removes rarely used tags from the page head: RSD, Windows Live Writer manifest, shortlink, adjacent post links and the REST API discovery link.
Inline Critical CSS From Your Theme
Prints the contents of a critical.css file from your active theme folder directly in the page head, so above-the-fold content is styled before the main stylesheet finishes loading.
Move Selected Scripts to the Footer
Moves the scripts you list from the page head to the footer, so they stop blocking the page from rendering.
Preload Header for Your Theme Stylesheet
Sends an HTTP Link preload header for your theme's main stylesheet, so browsers, and CDNs that support Early Hints, start downloading the CSS before the HTML has even arrived.
Preload the Site Logo
Preloads the logo set in the theme or Site Editor so it appears with the first paint of the header.
Server-Timing Header for Administrators
Adds a Server-Timing header with PHP time, database query count and peak memory to pages viewed by administrators, so you can read the numbers in your browser's developer tools Network tab.