Don't worry, it'll all make more sense shortly. Wow, that's an overwhelming amount of data. DevTools stops recording, processes the data, then displays the results on the TakeĪ recording in the Performance panel to learn how to detect the performance bottleneck in the Versions are supposed to move each square the same amount of space in the same amount of time. When you ran the optimized version of the page, the blue squares move faster. The blue squares move slower and with more jank again. Squares, you're just going to max out the CPU and you're not going to see a major difference inĬlick Un-Optimize. Versions, try clicking Subtract 10 a few times and trying again. Note: If you don't see a noticeable difference between the optimized and un-optimized The blue squares should move faster and more smoothly. High-end machine, it may take about 20 clicks.Ĭlick Optimize. Keep clicking Add 10 until the blue squares move noticeably slower than before.This section lets you customize the demo to ensure that your experience is relativelyĬonsistent with the screenshots and descriptions you see in this tutorial, regardless of your It's hard to create a runtime performance demo that works consistently for all readers of this So it just uses 2x slowdown for instructional purposes. This demo doesn't work well with 20x slowdown, CPU throttling, outlined in blue Note: When testing other pages, if you want to ensure that they work well on low-end mobileĭevices, set CPU Throttling to 20x slowdown. DevTools throttles your CPU so that it's 2 times slowerįigure 2. Make sure that the Screenshots checkbox is enabled.ĭevTools reveals settings related to how it captures performance metrics.įor CPU, select 2x slowdown.In DevTools, click the Performance tab.Whenever you profile a page, useĬPU Throttling to simulate how your page performs on mobile devices. Mobile devices have much less CPU power than desktops and laptops. The demo on the left, and DevTools on the right Note: For the rest of the screenshots, DevTools is undocked to a separate window so Press Command+Option+I (Mac) or Control+Shift+I (Windows, Linux) to open DevTools.įigure 1. The page shows a bunch of little blue squares moving up and down. This is the demo that you're going to profile. Load the following page in your Incognito window. For example, if you have a lot of extensions installed, those extensions might create Incognito Mode ensures that Chrome runs in a clean In this tutorial, you open DevTools on a live page and use the Performance panel to find a Check chrome://help to see what version of Chrome you're If you use another version of Chrome, the UI andįeatures of DevTools may be different. Caution: This tutorial is based on Chrome 59. In terms of the RAIL model, the skills you learn in this tutorial are useful forĪnalyzing the Response, Animation, and Idle phases of your page. Tutorial teaches you how to use the Chrome DevTools Performance panel to analyze runtime Runtime performance is how your page performs when it is running, as opposed to loading. Google Contacts previously had one, but the new icon removed it with Messages and Phone also currently lacking.Ĭhrome, Google Play, Photos, YouTube Music, Wallet, One, Translate, Camera, Fit, TV, Play Books, Recorder are other big absences.Twitter GitHub Glitch Note: See Optimize Website Speed to learn how make your pages load faster. Meanwhile, Google Home - with the big overhaul - has an animated splash screen to join YouTube (and TV), Maps, and News. Joining Gmail, Calendar, Drive, Docs, Sheets, Slides, Meet, Chat, and even Jamboard, this leaves Google Voice as the lone Workspace holdout. The biggest recent additions are Google Keep (which separately features a nice animation on Wear OS) and Tasks (rolling out with version 2022.11.21). Update 12/4/22: In the past year or so, not too many Google apps have picked up animated splash screens on Android 12+. Every application open on Android 12 is accompanied by a launch animation to make “startup a more consistent and delightful experience,” and the experience can be further enhanced by an animated icon on the splash screen as seen with Google’s apps.
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