Chrome DevTools is a set of web developer tools built directly into the GoogleChrome browser. DevTools can help you editpages on-the-fly and diagnose problems quickly, which ultimately helps you build betterwebsites, faster.
The 21 best Mac tools for developers Written by Matt Mayer on May 26th, 2015 October 26th, 2015 At the most recent CocoaHeads meetup in Shanghai, I presented 21 of my favorite tools which I use on my Mac. Chrome DevTools is a set of web developer tools built directly into the Google Chrome browser. DevTools can help you edit pages on-the-fly and diagnose problems quickly, which ultimately helps you 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 differentparts of the DevTools UI.
- When you want to work with the DOM or CSS, right-click an element on the page and select Inspectto jump into the Elements panel. Or press Command+Option+C (Mac) orControl+Shift+C (Windows, Linux, Chrome OS).
- When you want to see logged messages or run JavaScript, press Command+Option+J(Mac) or Control+Shift+J (Windows, Linux, Chrome OS) tojump straight into the Console panel.
See Open Chrome DevTools for more details and workflows.
Get started
If you're a more experienced web developer, here are the recommended starting points for learning howDevTools can improve your productivity:
Discover DevTools
The DevTools UI can be a little overwhelming... there are so many tabs! But, if you take sometime to get familiar with each tab to understand what's possible, you may discover that DevToolscan seriously boost your productivity.
Note: In the DevTools docs, the top-level tabs are called panels.Device Mode
Microsoft Access Developer Tools
Simulate mobile devices.
Elements panel
View and change the DOM and CSS.
Console panel
View messages and run JavaScript from the Console.
Sources panel
Debug JavaScript, persist changes made in DevTools across page reloads,save and run snippets of JavaScript, and save changes that you make in DevTools to disk.
Network panel
View and debug network activity.
Performance panel
Note: In Chrome 58 the Timeline panel was renamed to the Performance panel.Find ways to improve load and runtime performance.
Memory panel
Note: In Chrome 58 the Profiles panel was renamed to the Memory panel.Profile memory usage and track down leaks.
Application panel
Inspect all resources that are loaded, including IndexedDB or Web SQL databases, local andsession storage, cookies, Application Cache, images, fonts, and stylesheets.
Security panel
Debug mixed content issues, certificate problems, and more.
Community
The best place to file feature requests for Chrome DevTools is the mailing list.The team needs to understand use cases, gauge community interest, and discussfeasibility before implementing any new features.
File bug reports in Crbug, which is the engineering team's bug tracker.
If you want to alert us to a bug or feature request but don't have much time,you're welcome to send a tweet to @ChromeDevTools. We reply and sendannouncements from the account regularly.
For help with using DevTools, Stack Overflow is the best channel.
To file bugs or feature requests on the DevTools docs, open a GitHub issueon the Web Fundamentals repository.
DevTools also has a Slack channel, but the team doesn't monitor itconsistently.