How to use the CrUX API | Chrome UX Report | Chrome for Developers
The Chrome UX Report (CrUX) dataset represents how real-world Chrome users experience popular destinations on the web. Since 2017, when the queryable dataset was first released on BigQuery, field data from CrUX has been integrated into developer tools like PageSpeed Insights, the CrUX Dashboard, and Search Console's Core Web Vitals report, enabling developers to measure and monitor real-user exper
パフォーマンスに関する各種ブラウザAPI - 1000ch.net
パフォーマンスに関する各種ブラウザAPI ◯◯ Timing APIはW3CのWeb Performance Working GroupのIlya Grigorikを中心に策定が進められている、ブラウザのパフォーマンスを計測するブラウザAPIである。 User Timing API: 任意のラベルを用いてプログラムの実行にかかったを取得する Navigation Timing API: ブラウザライフサイクルの発生した時間を取得する Resource Timing API: リソースのロードに際して発生した各種時間を取得する Frame Timing API: ブラウザフレームの内訳を取得する Server Timing API: サーバー処理の内訳を取得する High Resolution Time API: 高精度のタイムスタンプを提供する ブラウザのwindowオブジェクトにperf
How To Use WebPageTest And Its API | CSS-Tricks
Get affordable and hassle-free WordPress hosting plans with Cloudways — start your free trial today. While the richness and interactivity of the average website has changed dramatically over the last decade, the same can be said about the expectations of those who consume it. This page has a list of reports that show how businesses were able to establish a direct correlation between the their webs
Performance observer - Efficient access to performance data | Blog | Chrome for Developers
Progressive Web Apps enable developers to build a new class of applications that deliver reliable, high performance user experiences. But to be sure a web app is achieving its desired performance goals, developers need access to high resolution performance measurement data. The W3C Performance Timeline specification defines such an interface for browsers to provide programmatic access to low level
2 つの時計のお話 - Web Audio の正確なスケジューリングについて
Introduction One of the biggest challenges in building great audio and music software using the web platform is managing time. Not as in “time to write code”, but as in clock time - one of the least well-understood topics about Web Audio is how to properly work with the audio clock. The Web Audio AudioContext object has a currentTime property that exposes this audio clock. Particularly for musical
Fast-Forward Performance - The Future Looks Bright
Barbara Bermes (@bbinto) oversees the development of OANDA's next-generation APIs. She acts as the internal and external evangelist for the API product suite as well as OANDA's developer community. Prior to joining OANDA, Barbara worked as senior architect and performance advocate at the Canadian Broadcasting Corporation (CBC) where she focused on mobile web development and performance optimizatio
About PageSpeed Insights | Google for Developers
Distribution and selected metric values PSI presents a distribution of these metrics so that developers can understand the range of experiences for that page or origin. This distribution is split into three categories: Good, Needs Improvement, and Poor, which are represented by green, amber, and red bars. For example, seeing 11% within LCP's amber bar indicates that 11% of all observed LCP values
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perf_hooks: implementation of Performance Timing API by jasnell · Pull Request #14680 · nodejs/node
Intent to Ship: Long Task API - Google Groups
HTTP Archive (HAR) format (Editor's Draft)