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The Credential Management API
Introduction to ARIA
Introduction to ARIA and non-native HTML semantics
Hiding and Updating Content
Hiding content from assistive technology
DOM Order Matters
The importance of the default DOM order
Introduction to Focus
Overview of screen focus in accessibility
Semantics and Navigating Content
The role of semantics in page navigation
The Accessibility Tree
Introduction to the Accessibility Tree
Using tabindex
Modifying the DOM order with tabindex
ARIA Labels and Relationships
Using ARIA labels to create accessible element descriptions
Introduction to Semantics
Introduction to semantics and assistive technology
Text Alternatives for Images
Using the alt attribute to provide text alternatives for images
Accessibility
Improving accessibility for web pages
How to Record Heap Snapshots
Learn how to record heap snapshots with the Chrome DevTools heap profiler and find memory leaks.
Memory Terminology
This section describes common terms used in memory analysis, and is applicable to a variety of memory profiling tools for different languages.
Edit the DOM
The DOM tree view in the Chrome DevTools Elements panel displays the DOM structure of the current web page. Live-edit the content and structure of your page through DOM updates.
Inspect and Edit Pages and Styles
Inspect and edit the HTML and CSS of your pages.
Access Local Servers
Host a site on a development machine web server, and then access the content from an Android device.
Emulate and Test Other Browsers
Your job doesn't end with ensuring your site runs great across Chrome and Android. Even though Device Mode can simulate a range of other devices like iPhones, we encourage you to check out other browsers solutions for emulation.
Analyze Runtime Performance
Users expect pages to be interactive and smooth. Each stage in the pixel pipeline represents an opportunity to introduce jank. Learn about tools and strategies to identify and fix common problems that slow down runtime performance.
Compare Similar Data Objects
Compare similar data objects using the table() method.
Diagnose and Log to Console
Console logging is a powerful way to inspect what your page or application does. Let's start with console.log() and explore other advanced usage.
Diagnose Forced Synchronous Layouts
Follow along with this interactive guide to learn how to use DevTools to diagnose forced synchronous layouts.
Edit Styles
Use the Styles pane in Chrome DevTools to inspect and modify the CSS styles associated to an element.
Emulate Sensors: Geolocation and Accelerometer
Touch screens, GPS chips, and accelerometers can be difficult to test since most desktops don't have them. The Chrome DevTools sensor emulators reduce the overhead of testing by emulating common mobile device sensors.
Evaluate Expressions
Explore the state of any item on your page from the DevTools console.
Exception and Error Handling
Chrome DevTools provides tools to help you fix web pages throwing exceptions and debug errors in your JavaScript.
How to Use the Allocation Profiler Tool
Use the allocation profiler tool to find objects that aren't being properly garbage collected, and continue to retain memory.
Make JavaScript Look Pretty
Transform your JavaScript into a more readable form by clicking the Pretty-Print icon in Chrome DevTools.
Map Preprocessed Code to Source Code
Keep your client-side code readable and debuggable even after you've combined, minified or compiled it.
Measure and count executions
Take advantage of the Console API to measure execution times and count statement executions.
Measure Resource Loading Times
Measure the network performance of your web application using the Chrome DevTools Network panel.
Monitor Events
The Chrome DevTools Command Line API offers various ways to observe and inspect event listeners
Optimize Performance Under Varying Network Conditions
It’s easy to overlook the network conditions your users will face on mobile. Use DevTools to emulate different network conditions. Fix any load time issues and your users will thank you.
Remote Debugging WebViews
Debug WebViews in your native Android apps using Chrome Developer Tools.
Speed Up JavaScript Execution
Identify expensive functions using the Chrome DevTools CPU Profiler.
Timeline Event Reference
The timeline events mode displays all events triggered while making a recording. Use the timeline event reference to learn more about each timeline event type.