Online HTTP Cache Checker
Check how web browsers will cache your website or asset URL. HTTP caching reuses previously loaded resources and can greatly impact performance.
Test your HTTP caching headers
Check a webpage, image, script, or any other resource for caching headers returned from the server or CDN. HTTP caching makes your website faster for returning visitors.
Want to monitor your website's caching performance? Request Metrics reports the experience of every visitor, and shows you which pages and resources could be cached.
More tools from Request Metrics
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Site Speed Check
Discover how fast your site is for real users with real data from the Chrome UX Report.
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Keyword Vitals
Chrome extension to show which Google keywords are limited by web performance.
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Unified Performance Monitoring
Run automated Lighthouse tests against your pages and compare with Real User performance.
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