Arvexa Performance Overlay shows a small pill in the corner of every page \u2014 for administrators only. Click it and you get a live panel with everything that matters about the page you are looking at:<\/p>\n\n
log_query_custom_data<\/code> filter and a backtrace scan \u2014 no core hacks, no db.php drop-in.<\/li>\n- The plugin never enables or changes
SAVEQUERIES<\/code>. To collect query timings, a site administrator may explicitly add define( 'SAVEQUERIES', true );<\/code> to wp-config.php<\/code> before the \"That's all, stop editing!\" line.<\/li>\n- Visitors are never affected: for anyone without the capability the plugin adds no assets, no queries and no output.<\/li>\n
- The Performance menu includes the theme setting, WordPress Core update status and a PageSpeed Insights shortcut.<\/li>\n
- Add-ons can extend the panel via the
arvexa_performance_overlay_data<\/code> PHP filter and the window.ArvexaPerformanceOverlay<\/code> JS API.<\/li>\n<\/ul>\n\nArvexa Performance Pro<\/h4>\n\n
Deep diagnostics live in the Arvexa Performance Pro add-on: full hook timeline, server cost of every AJAX\/REST call (X-Arvexa-Performance header), remote HTTP tracking (see what your shipping\/payment APIs cost), WP_Query explorer with SQL and EXPLAIN, per-plugin drill-down cards, layout-shift attribution per element, and performance history with before\/after comparison when a plugin is installed or updated.<\/p>\n\n\n
\n- Upload the
arvexa-performance-overlay<\/code> folder to \/wp-content\/plugins\/<\/code>, or install through the WordPress plugin screen.<\/li>\n- Activate the plugin.<\/li>\n
- Open any page of your site while logged in as an administrator \u2014 the Arvexa Performance Overlay pill appears bottom right. Click it to expand the panel.<\/li>\n
- Reload once more to get SQL timings and the per-plugin breakdown (see FAQ).<\/li>\n<\/ol>\n\n\n
\nWhy is the per-plugin SQL breakdown empty on the first load?<\/h3><\/dt>\nThe plugin never enables SAVEQUERIES<\/code>. To collect per-plugin query timings, add define( 'SAVEQUERIES', true );<\/code> to wp-config.php<\/code> before the \"That's all, stop editing!\" line, then reload the page.<\/p><\/dd>\nDoes it slow down my site?<\/h3><\/dt>\nFor visitors \u2014 no: without the capability nothing is collected, enqueued or printed. For the logged-in admin the plugin adds one fast SQL aggregate. Query logging is active only when the site administrator has explicitly enabled SAVEQUERIES<\/code>.<\/p><\/dd>\nWho can see the overlay?<\/h3><\/dt>\nUsers with the manage_options<\/code> capability. Change it with the arvexa_performance_overlay_capability<\/code> filter.<\/p><\/dd>\nDoes it work in the admin area?<\/h3><\/dt>\nYes \u2014 the panel is available on both frontend and admin pages. Browser metrics like LCP are most meaningful on the frontend.<\/p><\/dd>\n
Is any data sent anywhere?<\/h3><\/dt>\nNo. Everything is measured and displayed in your browser on your own site. Arvexa Performance Overlay makes no external requests.<\/p><\/dd>\n\n<\/dl>\n\n\n
1.2.0<\/h4>\n\n\n- Added repeated-query detection for duplicate and N+1-shaped SQL statements.<\/li>\n
- Added LCP cause analysis for lazy images, CSS backgrounds, discovery, image weight and server delay.<\/li>\n
- Refined Performance Pulse and bundled the Performance settings, Core status and PageSpeed Insights workflow.<\/li>\n<\/ul>\n\n
1.1.0<\/h4>\n\n\n- Added the Performance Pulse dashboard theme with visual PHP, LCP, CLS and INP indicators.<\/li>\n
- Added a WordPress admin settings page, Core version status and PageSpeed Insights shortcuts.<\/li>\n
- Pulse uses a wide diagnostic grid; Pro adds responsive viewport context without faking mobile metrics.<\/li>\n<\/ul>\n\n
1.0.2<\/h4>\n\n\n- Compatibility release for WordPress 7.1.<\/li>\n<\/ul>\n\n
1.0.1<\/h4>\n\n\n- Compatibility release for WordPress 7.0. Updated the required PHP version metadata to match WordPress core.<\/li>\n<\/ul>\n\n
1.0.0<\/h4>\n\n\n- Initial public release.<\/li>\n
- Server metrics: PHP time, SQL count\/time, memory, enqueued assets, autoload size, longest lifecycle phase.<\/li>\n
- Per-plugin\/theme cost attribution (SQL via backtrace, assets via Resource Timing).<\/li>\n
- Web Vitals: LCP + LCP element, CLS, INP, TTFB, DOM nodes, long tasks.<\/li>\n
- Client-side AJAX\/REST timing.<\/li>\n
- Slowest queries list.<\/li>\n
- Extension API for add-ons (
arvexa_performance_overlay_data<\/code> filter, window.ArvexaPerformanceOverlay<\/code> JS API).<\/li>\n<\/ul>","raw_excerpt":"A live on-page performance overlay for admins. Install a plugin, reload the page \u2014 and see exactly what it cost you.","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin\/341497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin"}],"about":[{"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/types\/plugin"}],"replies":[{"embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/comments?post=341497"}],"author":[{"embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wporg\/v1\/users\/balloodn"}],"wp:attachment":[{"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/media?parent=341497"}],"wp:term":[{"taxonomy":"plugin_section","embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_section?post=341497"},{"taxonomy":"plugin_tags","embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_tags?post=341497"},{"taxonomy":"plugin_category","embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_category?post=341497"},{"taxonomy":"plugin_contributors","embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_contributors?post=341497"},{"taxonomy":"plugin_business_model","embeddable":true,"href":"https:\/\/kea.wordpress.org\/plugins\/wp-json\/wp\/v2\/plugin_business_model?post=341497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}