Video processing with WebCodecs | Web Platform | Chrome for Developers
Modern web technologies provide ample ways to work with video. Media Stream API, Media Recording API, Media Source API, and WebRTC API add up to a rich tool set for recording, transferring, and playing video streams. While solving certain high-level tasks, these APIs don't let web programmers work with individual components of a video stream such as frames and unmuxed chunks of encoded video or au
Manage several displays with the Window Management API | Capabilities | Chrome for Developers
Published: September 14, 2020 Window Management API The Window Management API lets you enumerate the displays connected to your machine and to place windows on specific screens. Suggested use cases Examples of sites that may use this API include: Multi-window graphics editors à la Gimp can place various editing tools in accurately positioned windows. Virtual trading desks can show market trends in
DevTools architecture refresh: migrating to JavaScript modules | Blog | Chrome for Developers
As you might know, Chrome DevTools is a web application written using HTML, CSS and JavaScript. Over the years, DevTools has gotten more feature-rich, smarter and knowledgeable about the broader web platform. While DevTools has expanded over the years, its architecture largely resembles the original architecture when it was still part of WebKit. This post is part of a series of blog posts describi
Google Chrome does not do multiplexing with http2
I am building a webapp and serving it over http2. However when I analyze network in Google Chrome (Version 59.0.3071.115 (Official Build) (64-bit))'s developers tools, it is clear that multiplexing does not work as there are only 6 active connections (like with http1.1) and the rest of connections are queued. Why is this? Or are my expectations not correct? The screenshot (you can see that protoco
mozaic.fm v3 リリースと Podcast の PWA 化 | blog.jxck.io
Intro mozaic.fm をリニューアルし v3 としてリリースした。 今回の更新は以下のような変更/修正を実施している。 PWA 化 before install prompt Background Fetch Periodic Background Sync Content Index API Badging API Player UI の刷新 Pure Webcomponents Media Session API WAI-ARIA Portal Preview Screen Wake Lock Security CSP v3 (not Report-Only) Cross Origin Resource Policy Cross Origin Opener Policy Cross Origin Embedder Policy Expect-CT NEL Referrer P
Web Vitals | Articles | web.dev
Published: May 4, 2020 Optimizing for quality of user experience is key to the long-term success of any site on the web. Whether you're a business owner, marketer, or developer, Web Vitals can help you quantify the experience of your site and identify opportunities to improve. Overview Web Vitals is an initiative by Google to provide unified guidance for quality signals that are essential to deliv
Advancing the web framework ecosystem | Articles | web.dev
Chrome is an active contributor to the web framework ecosystem and our talk at Chrome Dev Summit 2019 covers what we've worked on in the past year. Read on for an extended recap of the talk with additional details and resources. How do we make the web better? The goal of everyone on the Chrome team is to make the web better. We work on improving browser APIs and V8--the core JavaScript and WebAsse
Fixing layout instability | Articles | web.dev
[ { "name": "", "entryType": "layout-shift", "startTime": 210.78500000294298, "duration": 0, "value": 0.0001045969445437389, "hadRecentInput": false, "lastInputTime": 0 } ] In this example there was a single very tiny shift of 0.01% at 210ms. Knowing the time and severity of the shift is useful to help narrow down what could have caused the shift. Let's turn back to WebPageTest for a lab environme
Using with puppeteer · Jest
Generating code coverage for test files using Puppeteer is currently not possible if your test uses page.$eval, page.$$eval or page.evaluate as the passed function is executed outside of Jest's scope. Check out issue #7962 on GitHub for a workaround. Use jest-puppeteer Preset Jest Puppeteer provides all required configuration to run your tests using Puppeteer. First, install jest-puppeteer
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Intent to Prototype: App history API
Chrome Platform Status
Intent to Ship: import maps (inline only)
GitHub - vicrazumov/js-bundle-size: Cross-browser extension adding JS bundle size data to npm and github pages
Lighthouse doesn't wait long enough for page to load (NO_LCP) · Issue #11180 · GoogleChrome/lighthouse
GitHub - addyosmani/puppeteer-webperf: Automating Web Performance testing with Puppeteer 🎪
Release v2.1.0 · puppeteer/puppeteer
GitHub - microsoft/playwright: Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
GitHub - KabaLabs/Cypress-Recorder: A dev tool that records user interaction with a web application and generates cypress code to allow the developer to replicate that particular session.
windowのkey/valueを検索するSnnipet
https://bugs.chromium.org/p/chromium/issues/detail?id=789163