SEO checks / Performance
Performance checks
24 checks covering Core Web Vitals and page-weight problems that slow pages down. Every one runs on every crawl, with the evidence it was raised on.
Critical Cumulative Layout Shift
cwv_cls_criticalCriticalDeveloper fixCritical Largest Contentful Paintcwv_lcp_criticalCriticalDeveloper fixFirst content image is lazy-loadedmedia_lazy_lcp_imageMediumNeeds reviewHTML response is not compressedperf_no_compressionMediumDeveloper fixLarge pageperf_moderate_pageMediumDeveloper fixLikely hero image is not preloadedmedia_no_lcp_preloadLowNeeds reviewModerate First Contentful Paintcwv_fcp_poorMediumDeveloper fixModerate server response timeperf_moderate_responseMediumDeveloper fixOver 10 render-blocking resourcesrender_blocking_criticalHighDeveloper fixOversized resourceresource_oversizedHighDeveloper fixPage is excessively heavyperf_excessive_domMediumDeveloper fixPoor Cumulative Layout Shiftcwv_cls_poorHighDeveloper fixPoor Largest Contentful Paintcwv_lcp_poorHighDeveloper fixResponse declares no caching policyperf_no_cache_headersLowDeveloper fixSeveral render-blocking resourcesrender_blocking_warningMediumDeveloper fixSlow First Contentful Paintcwv_fcp_criticalHighDeveloper fixSlow server response timeperf_slow_responseCriticalDeveloper fixSlow Time to First Bytecwv_ttfb_poorMediumDeveloper fixUn-minified CSS fileresource_css_not_minifiedLowDeveloper fixUn-minified JavaScript fileresource_js_not_minifiedLowDeveloper fixUnusually fragmented JavaScriptperf_too_many_scriptsLowDeveloper fixVery large pageperf_large_pageHighDeveloper fixVery low text-to-HTML ratiocontent_low_text_ratioInfoDeveloper fixWeb font loads without a font-display strategymedia_font_display_missingLowNeeds reviewRun every performance check on your site
Free for 500 URLs. Issues ranked by estimated impact, fixable ones opened as pull requests.