In chrome developer tools, In preferences, I can not change the panel layout into horizontal mode, if a change it, there are no changes, why?
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When I inspect the HTML source in Firefox (Developer Tools) and then switch on the Responsive Design Mode, this will be active even if I close the Developer Tools.
In Chrome, alas, this is not the case. As soon as I close the DevTools, the Device Toolbar is deactivated as well.
Is there a way to make the Device Toolbar permanent in Chrome?
Chrome DevTools previously offered a setting to show rulers when inspecting elements. It had a pixel ruler at the sides of the view, and boundary lines for each element extending the full view of the page.
It used to be found (as I recall) in "DevTools Settings / General". There no longer is a General section, and I don't see it in "DevTools Settings / Appearance". Has this been moved, or removed? I'm not finding documentation or discussion of it.
You can enable it in DevTools Settings > Preferences, under the Elements section.
To use, open the console and hover over an element to view the ruler. Thanks #Brandito for mentioning in the comment.
Click Toggle Device Toolbar which is in the top-left of your DevTools window.
Click More Options and then select Show rulers.
The rulers are to the left of and above your viewport. You can click on the numbers to set the width and height to that size.
Click on the Chrome setting, then:
Under Preferences, Enable DevTools and enable Ruler.
Go to your page and right click on it, then click inspect.
Click Toggle Device Toolbar icon (top-left of DevTools window.
In Developer Mode Press Ctrl+Shift+P then type Ruler
Chrome developer tools in chrome can simulate some device dimensions and even we can set custom width(x) and height(y) for viewport. my question is can we save this custom width or height with custom name or just save it.
In recent versions this is found in...
Developer Tools (CTRL+SHIFT/OPTION+CMD+I)
Settings (F1)
Devices
Add custom device…
As specified in the Device Mode & Mobile Emulation Chrome docs.
Chrome Canary now has this conveniently found under "Edit…" in the 'Responsive' drop-down menu when in 'device mode' (CTRL+SHIFT/OPTION+CMD+M when developer tools are open).
Yes, you can save custom presets. Just click the More overrides button in the top right (represented as three horizontal dots). The emulation drawer should show up in the Dev-tools. You can click Save As button and assign a name to the custom preset. The new preset should then show up in the list of Models.
Check out the official DevTools documentation on this for more detailed steps.
Edit: This seems to have changed in the newer versions of Chrome. matharden's answer includes the correct steps: inside the devtools, go to Settings, select Devices in the left navigation and select Add custom device...
If you bring up the developer tools, click the settings cog in the corner and then select Devices from the left-hand menu, there is an option at the bottom of that page to add a custom device.
At the time I've added this answer, saving screen resolutions seems to have been disabled.
I created a preset (1024x768) whilst it was still possible, and I can still access that preset, but there's no longer a Save option where it did exist (as #Chirag64 described).
There's no mention of 'save' in the docs: https://developer.chrome.com/devtools/docs/device-mode, either :(
I had a quick look around in chrome://flags and my ~/Library/Application Support/Google/Chrome directory, but couldn't find reference to the preference I have saved...
Any option to show/hide the black box in the top right corner of Chrome when you open Developer Tools ?
The toggle for this is called Enable continuous page repainting and is located in the Developer Tools' drawer, under the Rendering tab.
Chrome Developer Tools Rendering Settings
Chrome's dev tools starting behaving strangely today. When I expand the dev tools pane, the main browser window scales down proportionately rather than becoming narrower (or shorter).
I've searched through the settings to see if there is something I inadvertently checked or unchecked, but haven't had any luck. I've also disabled all extensions and verified that I'm on the current version of Chrome.
You can see the effect in the screenshots below. The browser pane in the first screen shot has already scaled down, and scales further as I expand the dev tools pane in the second shot.
What should I do to fix this?
So it turns out it was a combination of settings I had inadvertently checked.
In Developer Tools Settings, Show 'Emulation' view in console drawer has to be checked
In the console drawer, on the Emulation tab, if Emulate screen and Shrink to fit are both checked, the browser window will scale as the dev tools pane is resized.
I unchecked Emulate screen and all is well.