addyosmani/timing.js

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1478 stars · 111 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A small JavaScript library of helpers for the Navigation Timing API that measures where a web page spends its time loading. It normalizes firstPaint across browsers and exposes computed metrics like domReadyTime and loadTime via a simple API or console tables.

Use cases

• measure page load performance in the browser
• get first paint time across Chrome, Firefox and IE
• print a table of navigation timing metrics in DevTools
• find out how long DNS, connect and request phases take
• use as a bookmarklet to audit any page's load timing

When to choose

• you need quick browser page-load timing metrics without a full RUM solution
• you want a tiny standalone script, DevTools snippet or bookmarklet for performance auditing

When to avoid

• you need modern PerformanceObserver or User Timing based metrics
• you need continuous real-user monitoring or production analytics
• you need long-term maintained support — the project has seen little activity since 2020

Facets

library · maturity maintenance

developer-tools monitoring analytics web-development frontend performance developer-tools browser navigation-timing performance-metrics page-load bookmarklet devtools javascript

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