Chromium Blog
News and developments from the open source browser project
Do more with Chrome Developer Tools
Tuesday, October 23, 2012
The
Chrome Developer Tools
team recently launched new features and made several UI changes to improve your development and debugging workflow.
Develop for mobile
Since
we launched
Chrome for Android, you’ve been able to use Chrome Developer Tools to debug and profile mobile web pages and web apps.
Today, we take this feature one step further by introducing device emulation support in Chrome Developer Tools. Device emulation includes, among other things, native
User Agent and dimension overriding
. This allows developers to debug mobile browsers on different devices and operating systems via the Settings Menu. So, now, you can emulate the exact device metrics of devices like the Galaxy Nexus and the iPhone to test your media query-driven design.
Chrome Developer Tools also supports single
touch event
emulation
to make it easier to
debug mobile applications
on the desktop.
Profile rendering performance
The Timeline’s Frame Mode feature now allows you to
profile Chrome’s rendering performance
, remove the jank and deliver the silky smooth performance users expect from your apps. To learn more about this topic, check out the recent
"Jank Busters"
video from Google I/O.
Preview your log items
The console now prints a user-friendly snapshot of the object properties taken at log time, whereas by expanding the object manually, you can still see its live content. This is especially useful when logging an object in a loop and observing its mutation. With this change, we resolved a
longstanding bug
many of you prioritized on
crbug.com
.
Play with experimental features
You can now try new experimental features in Chrome Developer Tools by visiting
chrome:flags
and enabling them there. Once you do that, a new tab called “Experiments” will be visible in the settings menu, allowing you to enable and use any of the following experiments:
Snippets (essentially multi-line console on steroids)
Source mapping support for
SASS
Native memory profiling
Geolocation / orientation override
FileSystem inspection
Canvas inspection
CPU activity in Timeline
CSS Regions support
Some of these experimental features are almost ready while others have just landed and need some more refining. In either case, we’d love your
feedback
before we bake these fully in Chrome Developer Tools. You can also read our recently updated
contribution guide
if you’re interested in helping us make the tools better.
To get more information on all of Chrome Developer Tools features, check out our “
Chrome Developer Tools Evolution
” talk at the I/O 2012. You can also follow
Google Chrome Developers
on Google+ or
@ChromiumDev
on Twitter for more news on changes landing in Chrome Developer Tools.
Posted by Stefano Cazzulani, Product Manager
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