Paste your active plugin list. In under 5 seconds, get a report on known conflicts, duplicate functionality, abandoned plugins, and the exact fix for each — written from 150+ Pearl Lemon internal fleet sites worth of production incidents.
Last updated · Reviewed by Ali Yasin Jatoi
One per line, or comma-separated. Slugs (wp-rocket) or names (WP Rocket) both work.
When our database doesn't find your specific pair, use the 6-step isolation method every WordPress engineer uses. Works on any conflict, every time.
Clone to staging
Never debug on production. Most managed hosts have a one-click staging clone.
Deactivate all plugins
wp-admin → Plugins → bulk select → Deactivate. If wp-admin itself is broken, SFTP into /wp-content/ and rename plugins to plugins-off.
Confirm the bug is gone
Reload the broken page. If it's still broken, the issue is your theme or WP core, not a plugin.
Reactivate one at a time
Turn on each plugin individually, refreshing the broken page after each.
Note the culprit
The plugin that brings the bug back is your conflict trigger. Sometimes it's two plugins together — you'll spot the pattern.
Fix, replace, or roll back
Update to the latest version first. If the conflict persists, roll back the plugin with WP Rollback, then contact the plugin author with your findings.
The gold-standard method is plugin isolation: deactivate all plugins, confirm the bug is gone, then reactivate one plugin at a time and refresh the broken page after each. The plugin that brings the bug back is your culprit. Do this on a staging clone, not production. Our free checker on this page short-circuits step one — it catches the most common conflicts (two caches, two SEO plugins, two firewalls) instantly.
Three likely causes: (1) the updated plugin conflicts with another plugin that was already installed — the update changed a hook and now they collide. (2) The update requires a newer PHP or WordPress core version than you're running. (3) The update introduced a bug that was pushed without proper QA. Roll back with WP Rollback plugin, then wait 48-72 hours before re-updating.
Wrong question. A well-coded plugin count of 40 will outperform 10 badly-coded ones. What matters is: (1) is each plugin actively maintained (updated in the last 6 months)? (2) does any plugin duplicate functionality of another (two forms, two caches, two SEO)? (3) does each plugin justify the JS/CSS it enqueues on every page? On our fleet the median site runs 22-28 plugins with zero performance issues.
80% of the time: a plugin fatal error after an update. 15%: PHP memory limit hit. 5%: theme conflict. Fastest fix: SFTP into the site, rename /wp-content/plugins to /plugins-off, reload the site. If it loads, the culprit is a plugin — rename back, then rename individual plugin folders one at a time until the site breaks.
Different tools. Wordfence is a WordPress plugin that scans your files for malware and runs a firewall at PHP level — great for detection and cleanup. Sucuri's paid platform is a cloud WAF (traffic filtered before it hits your site) — better for prevention and DDoS. On our care plans we run Wordfence for scanning and Cloudflare WAF for edge blocking. Never run Wordfence AND Sucuri's WAF plugin — pick one PHP-level firewall.
Four fast checks on the wordpress.org plugin page: (1) Last updated — must be under 6 months. (2) Active installations trend — flat or growing, not collapsing. (3) 'Tested up to' — must match your WP version. (4) Search the plugin name on wpscan.com and patchstack.com for CVEs. If any of the four is red, don't install.
Pull every URL from any XML sitemap, with lastmod, changefreq, and priority. Export to CSV.
Cross reference your core, plugin, or theme version against the CVE database.
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