WordPress

Works in your browser but fails on Android, curl or an API client? The server is probably missing its intermediate certificate. Learn to test and fix the chain.

PageSpeed says the server responds slowly. Measure TTFB with curl, prove whether page cache is working, then find the PHP, query or HTTP call eating the time.

The front end is fine but wp-admin crawls. Find the real cause: Heartbeat and admin-ajax, update checks, WP-Cron, Action Scheduler backlogs or heavy list screens.

A bloated database slows every uncached page. Measure autoloaded options, transients, revisions and orphaned meta with exact SQL, then clean up safely after a backup.

Search Console shows INP in red and buttons feel sticky. Learn what INP measures, find the long tasks behind it in Chrome devtools, and fix the scripts causing them.

Your homepage loads but every other page says 404 Not Found. The server is not handing pretty URLs to WordPress. Fix .htaccess, mod_rewrite, Nginx try_files or the rewrite rules.

Changed your URLs or domain? Build a complete old-to-new map, pick the right status code, put the rules in the right layer and test every line before and after launch.

Four versions of your address should reach one canonical URL in a single redirect. Test all four, set WordPress to match, then write one combined rule at the server or CDN.

Moved a WordPress site and it keeps sending you to the old domain or staging address? Find which layer is redirecting, then fix the database URLs safely, constants, DNS and CDN origin.

A page redirects somewhere you never set up, or takes three hops to load. Trace each hop with curl, read the headers to find the layer that sent it, then fix it at the source.

Contact form messages, password resets or order emails never arrive? Find out why PHP mail() fails and how to route WordPress mail through authenticated SMTP.

Mail to Gmail, Yahoo or Outlook bouncing or landing in junk? Learn the current sender requirements, how to read Postmaster Tools and SNDS, and how to fix PTR and HELO.