Chrome DevTools is a set of web developer tools built directly into theGoogle Chrome browser.DevTools can help you edit pages on-the-fly and diagnose problems quickly, which ultimately helpsyou build better websites, faster.

Check out the video for live demonstrations of core DevTools workflows, including debugging CSS,prototyping CSS, debugging JavaScript, and analyzing load performance.

Open DevTools

There are many ways to open DevTools, because different users want quick access to different partsof the DevTools UI.

• To work with the DOM or CSS, right-click an element on the page and selectInspect to jump into theElements panel. Or pressCommand+Option+C (Mac) orControl+Shift+C (Windows, Linux, ChromeOS).
• To see logged messages or run JavaScript, pressCommand+Option+J (Mac) orControl+Shift+J (Windows, Linux, ChromeOS) to jump straight into theConsole panel.

SeeOpen Chrome DevTools for more details and workflows.

Get started

If you're a more experienced web developer, here are the recommended starting points for learninghow DevTools can improve your productivity:

• View and change the DOM
• View and change CSS
• Debug JavaScript
• View messages and run JavaScript in the Console
• Optimize website speed
• Inspect network activity

Discover DevTools

The DevTools UI can be a little overwhelming... there are so many tabs! But, if you take some timeto get familiar with each tab to understand what's possible, you may discover that DevTools canseriously boost your productivity.

• Device mode
• Emulate device sensors

Elements panel

View and change the DOM and CSS.

• Get started with viewing and changing the DOM
• Get started with viewing and changing CSS
• Edit CSS
• Edit the DOM
• Find invalid, overridden, inactive, and other CSS
• Identify potential CSS improvements
• Emulate light/dark themes, contrast, and other CSS media features
• Find unused CSS
• Inspect animations

Console panel

View messages and run JavaScript from the Console.

• Get started with the Console
• Console Utilities API reference
• Console API reference

Sources panel

Debug JavaScript, persist changes made in DevTools across page reloads, save and run snippets ofJavaScript, and save changes that you make in DevTools to local sources.

• Get started with debugging JavaScript
• Pause your code with breakpoints
• Edit and save files in a workspace
• Run snippets of JavaScript
• JavaScript debugging reference
• Override web content and HTTP response headers locally

Network panel

View and debug network activity.

• Inspect network activity
• Network features reference
• View page resources

Recorder panel

Record, replay, and measure user flows.

• Record, replay, and measure user flows
• Customize the Recorder with extensions
• Recorder features reference

Performance panel

Find ways to improve load and runtime performance.

• Optimize website speed
• Analyze runtime performance
• Performance features reference

Memory panel

Find and fix memory issues that affect page performance, for example, memory leaks.

• Fix memory problems

Application panel

Inspect all resources that are loaded, including IndexedDB or Web SQL databases, local and sessionstorage, cookies, Application Cache, images, fonts, and stylesheets.

• Debug Progressive Web Apps
• View and edit local storage
• View, add, edit, and delete cookies
• View origin trial information

Security panel

Debug mixed content issues, certificate problems, and more.

• Understand security issues

Community

File bug reports and feature requests in Crbug, which is the engineering team's bug tracker.

Crbug

If you want to alert us to a bug or feature request but don't have much time, you're welcome to senda tweet to @ChromeDevTools. We reply and send announcements from the account regularly.

Twitter

For help with using DevTools, Stack Overflow is the best channel.

Stack Overflow

To file bugs or feature requests on the DevTools docs, open a GitHub issue.

Docs Issues

DevTools also has a Slack channel, but the team doesn't monitor it consistently.

Slack