Lighthouse Score Weighting
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Example metric scores. (What metric value is required to get a X score on this audit)
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CategoryAudit
Weight within Category
Score of 99
Score of 95
Score of 90
Score of 80
Score of 70
Score of 45
Metric Scoring Median
Metric Scoring Falloff
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performancefirst-meaningful-paint5#NAME?#NAME?#NAME?#NAME?#NAME?#NAME?4,0001,600
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performancefirst-interactive5#NAME?#NAME?#NAME?#NAME?#NAME?#NAME?10,0001,700
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performanceconsistently-interactive5#NAME?#NAME?#NAME?#NAME?#NAME?#NAME?10,0001,700
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performancespeed-index-metric1#NAME?#NAME?#NAME?#NAME?#NAME?#NAME?5,5001,250
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performanceestimated-input-latency1#NAME?#NAME?#NAME?#NAME?#NAME?#NAME?10050
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performancelink-blocking-first-paint0
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performancescript-blocking-first-paint0
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performanceuses-responsive-images0
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performanceoffscreen-images0
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performanceuses-optimized-images0
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performanceuses-webp-images0
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performanceuses-request-compression0
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performancetime-to-first-byte0
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performanceredirects0
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performancetotal-byte-weight0
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performancedom-size0
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performancecritical-request-chains0
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performanceuser-timings0
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performancescreenshot-thumbnails0
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seoviewport1
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seodocument-title1
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seometa-description1
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seohttp-status-code1
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seolink-text1
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seois-crawlable1
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seohreflang1
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seofont-size1
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seoplugins1
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seocanonical0
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seomobile-friendly0manual
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seostructured-data0manual
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pwaservice-worker1
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pwaworks-offline1
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pwawithout-javascript1
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pwais-on-https1
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pwaredirects-http1
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pwaload-fast-enough-for-pwa1
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pwawebapp-install-banner1
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pwasplash-screen1
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pwathemed-omnibox1
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pwaviewport1
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pwacontent-width1
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pwapwa-cross-browser0
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pwapwa-page-transitions0
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pwapwa-each-page-has-url0
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accessibilitybutton-name10
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accessibilitybypass10
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accessibilitylabel10
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accessibilitylink-name9
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accessibilityimage-alt8
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accessibilitycolor-contrast6
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accessibilityaria-required-children5
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accessibilityaria-valid-attr5
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accessibilityduplicate-id5
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accessibilityframe-title5
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accessibilitylist5
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accessibilityaudio-caption4
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accessibilityhtml-has-lang4
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accessibilitylistitem4
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accessibilityobject-alt4
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accessibilitytabindex4
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accessibilityvideo-caption4
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accessibilityaria-allowed-attr3
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accessibilityaria-roles3
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accessibilitymeta-viewport3
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accessibilityvideo-description3
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accessibilityaria-required-attr2
70
accessibilityaria-required-parent2
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accessibilityaria-valid-attr-value2
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accessibilitydocument-title2
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accessibilityaccesskeys1
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accessibilitydefinition-list1
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accessibilitydlitem1
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accessibilityhtml-lang-valid1
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accessibilityinput-image-alt1
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accessibilitylayout-table1
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accessibilitymeta-refresh1
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accessibilitytd-headers-attr1
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accessibilityth-has-data-cells1
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accessibilityvalid-lang1
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best-practices
appcache-manifest1
84
best-practices
no-websql1
85
best-practices
is-on-https1
86
best-practices
uses-http21
87
best-practices
uses-passive-event-listeners1
88
best-practices
no-mutation-events1
89
best-practices
no-document-write1
90
best-practices
external-anchors-use-rel-noopener
1
91
best-practices
geolocation-on-start1
92
best-practices
no-vulnerable-libraries1
93
best-practices
notification-on-start1
94
best-practices
deprecations1
95
best-practices
manifest-short-name-length1
96
best-practices
password-inputs-can-be-pasted-into
1
97
best-practices
errors-in-console1
98
best-practices
image-aspect-ratio1
99
100
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