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web-vitals

Easily measure performance metrics in JavaScript

v4.2.4 URL: https://unpkg.com/web-vitals@4.2.4/dist/web-vitals.iife.js

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cruxperformancemetricsCore Web VitalsCLSFCPFIDINPLCPTTFB

perfume.js

Web performance library for measuring all User-centric performance metrics, including the latest Web Vitals.

v9.4.0 URL: https://unpkg.com/perfume.js@9.4.0/dist/perfume.umd.min.js

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performanceperformance-metricsmetricsnavigation-timingtime-to-first-bytettfbnavigator-interfaceresource-timingservice-worker-statusstorageManager-interfacefirst-paintfpfirst-contentful-paintfcpfirst-input-delayfidlargest-contentful-paintlcpcumulative-layout-shiftclstotal-blocking-timetbtelement-timingweb-vitals

r2-lcp-js

Readium 2 LCP bits for NodeJS (TypeScript)

v1.0.41 URL: https://unpkg.com/r2-lcp-js@1.0.41/index.js

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readiumreadium2LCPEPUBTypeScriptJavaScriptES5ES6ECMAScript 2015ECMAScript 6ES7ECMAScript 2016ECMAScript 7ES8ECMAScript 2017ECMAScript 8

@vercel/gatsby-plugin-vercel-analytics

Track Core Web Vitals in Gatsby projects with Vercel Speed Insights.

v1.0.11 URL: https://unpkg.com/@vercel/gatsby-plugin-vercel-analytics@1.0.11/index.js

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gatsbygatsby-plugingatsby-plugin-vercelweb vitalsvercelclsfcpfidlcpttfb

auto-lazyload

A lazy loading library for images, background, videos, Didn't require to change the HTML markup, just works and the performance is amazing!

v1.1.4 URL: https://unpkg.com/auto-lazyload@1.1.4/lib/auto-lazyload.js

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lazyloadimagebackground-imagevideoLCPperformancepagespeedanimations