What's New In DevTools (Chrome 89)
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Debugging support for Trusted Types violations #
Breakpoint on Trusted Type violations #
You can now set breakpoints and catch exceptions on Trusted Type Violations in the Sources panel.
In the Sources panel, open the debugger sidebar pane. Expand the CSP Violation Breakpoints section and enable the Trusted Type violations checkbox to pause on the exceptions. Try it yourself with this demo page.
Chromium issue: 1142804
Link issue in the Sources panel to the Issues tab #
The Sources panel now shows a warning icon next to the line that violates Trusted Type. Hover on it to preview the exception. Click on it to expand the Issues tab, it provides more details on the exceptions and guidance on how to fix it.
Chromium issue: 1150883
Capture node screenshot beyond viewport #
You can now capture node screenshots for a full node, including content below the fold. Previously, the screenshot was cut off for content not visible in the viewport. The full-page screenshots are precise now as well.
In the Elements panel, right click on an element and select Capture node screenshot.
Chromium issue: 1003629
New Trust Tokens tab for network requests #
Inspect the Trust Token network requests with the new Trust Tokens tab.
Trust Token is a new API to help combat fraud and distinguish bots from real humans, without passive tracking. Learn how to get started with Trust Tokens.
Further debugging support will come in the next releases.
Chromium issue: 1126824
Lighthouse 7 in the Lighthouse panel #
The Lighthouse panel is now running Lighthouse 7. Check out the release notes for a full list of changes.
New audits in Lighthouse 7:
Preload Largest Contentful Paint (LCP) image. Audits if the image used by the LCP element is preloaded in order to improve your LCP time.
Issues logged to the
Issuespanel. Indicates a list of unresolved issues in the
Progressive Web Apps (PWA). The PWA Category changed fairly significantly.
The Installable group is now powered entirely by the capability checks that enable Chrome's installable criteria. These are the same signals seen in the Manifest pane.
- The "Registers a service worker…" audit moves to the PWA Optimized group, and the "Uses HTTPS" audit is now included as part of the key "installability requirements" audit.
- The Fast and reliable group is removed. As the revamped "installability requirements" audit includes offline-capability checking, the "current page and start_url respond with 200 when offline" audit was removed. The "Page load is fast enough on mobile network" audit was removed too.
Chromium issue: 772558
Elements panel updates #
Support forcing the CSS
:target state #
You can now use DevTools to force and inspect the CSS
In the Elements panel, select an element and toggle the element state. Enable the
:target checkbox to force and inspect the styles.
:target pseudo-class to style element when the hash in the URL and the id of an element are the same. Check out this demo to try it yourself. This new DevTools feature lets you test such styles without having to manually change the URL all the time.
Chromium issue: 1156628
New shortcut to duplicate element #
Use the new Duplicate element shortcut to clone an element instantly.
Right click an element in the Elements panel, select Duplicate element. A new element will be created under it.
Alternatively, you can duplicate element with keyboard shortcuts:
- Window/ Linux:
Color pickers for custom CSS properties #
The Styles pane now shows color pickers for custom CSS properties.
In addition, you can hold the
Shift key and click on color picker to cycle through the RGBA, HSLA, and Hex representations of the color value.
Chromium issue: 1147016
New shortcuts to copy CSS properties #
You can now copy CSS properties quicker with a few new shortcuts.
In the Elements panel, select an element. Then, right-click on a CSS class or a CSS property in the Styles pane to copy the value.
Copy options for CSS class:
- Copy selector. Copy the current selector name.
- Copy rule. Copy the rule of the current selector.
- Copy all declarations: Copy all declarations under the current rule, including invalid and prefixed properties.
Copy options for CSS property:
- Copy declaration. Copy the declaration of the current line.
- Copy property. Copy the property of the current line.
- Copy value: Copy the value of the current line.
Chromium issue: 1152391
Cookies updates #
New option to show URL-decoded cookies #
You can now opt to view the URL-decoded cookies value in the Cookies pane.
Go to the Application panel and select the Cookies pane. Select any cookie on the list. Enable the new Show URL decoded checkbox to view the decoded cookie.
Chromium issue: 997625
Clear only visible cookies #
The Clear all cookies button in the Cookies pane is now replaced by Clear filtered cookies button.
In the Application panel > Cookies pane, enter text in the textbox to filter the cookies. In our example here, we filter the list by "PREF". Click on the Clear filtered cookies button to delete the visible cookies. Clear the filter text and you will see the other cookies remain in the list. Previously, you only had the option to clear all cookies.
Chromium issue: 978059
New option to clear third-party cookies in the Storage pane #
When clearing the site data in the Storage pane, DevTools now clear only first-party cookies by default. Enable the including third-party cookies to clear the third-party cookies as well.
Chromium issue: 1012337
Edit User-Agent Client Hints for custom devices #
You can now edit User-Agent Client Hints for custom devices.
Go to Settings > Devices and click on Add custom device.... Expand the User agent client hints section to edit the client hints.
User-Agent Client Hints are an alternative to User-Agent string that enables developers to access information about a user's browser in a privacy-preserving and ergonomic way. Learn more about User-Agent Client Hints in web.dev/user-agent-client-hints/.
Chromium issue: 1073909
Network panel updates #
Persist "record network log" setting #
DevTools now persist the "Record network log" setting. Previously, DevTools reset the user's choice whenever a page reloads.
Chromium issue: 1122580
View WebTransport connections in the Network panel #
Network panel now displays WebTransport connections.
WebTransport is a new API offering low-latency, bidirectional, client-server messaging. Learn more about its use cases, and how to give feedback about the future of the implementation in web.dev/webtransport/.
Chromium issue: 1152290
"Online" renamed to "No throttling" #
The network emulation option "Online" is now renamed to "No Throttling".
Chromium issue: 1028078
New copy options in the Console, Sources panel, and Styles pane #
New shortcuts to copy object in the Console and Sources panel #
You can now copy object values with the new shortcuts in the Console and Sources panel. This is handy especially when you have a large object (e.g. a long array) to copy.
New shortcuts to copy file name in the Sources panel and Styles pane #
You can now copy file name by right clicking on:
- a file in the Sources panel, or
- the file name in the Styles pane in the Elements panel
Select Copy file name from the context menu to copy the file name.
Chromium issue: 1155120
Frame details view updates #
New Service Workers information in the Frame details view #
DevTools now displays dedicated service workers under the frame which creates them.
In the Application panel, expand a frame with service workers, then select a service worker under the Service Workers tree to view the details.
Chromium issue: 1122507
Measure Memory information in the Frame details view #
performance.measureMemory() API status is now displayed under the API availability section.
performance.measureMemory() API estimates the memory usage of the entire web page. Learn how to monitor your web page's total memory usage with this new API in this article.
Chromium issue: 1139899
Provide feedback from the Issues tab #
If you ever want to improve an issue message, go to the Issues tab from the Console or More Settings > More tools > Issues > to open the Issues tab. Expand an issue message, and click on the Is the issue message helpful to you?, then you can provide feedback in the pop up.
Dropped frames in the Performance panel #
When analyzing load performance in the Performance panel, the Frames section now marks dropped frames as red. Hover on it to find out the frame rate.
Chromium issue: 1075865
Emulate foldable and dual-screen in Device Mode #
You can now emulate dual-screen and foldable devices in DevTools.
After enabling the Device Toolbar, select one of these devices: Surface Duo or Samsung Galaxy Fold.
Click on the new span icon to toggle between single-screen or folded and dual-screen or unfolded postures.
You can also enable the Experimental Web Platform features to access the new CSS media
getWindowSegments API. The experimental icon displays the state of the Experimental Web Platform features flag. The icon is highlighted when the flag is turned on. Navigate to
chrome://flags and toggle the flag.
Chromium issue: 1054281
Experimental features #
Automate browser testing with Puppeteer Recorder #
To enable the experiment, check the Recorder checkbox under Settings > Experiments.
DevTools can now generate Puppeteer scripts based on your interaction with the browser, making it easier for you to automate browser testing. Puppeteer is a Node.js library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol.
Go to this demo page. Open the Sources panel in DevTools. Select the Recording tab on the left pane. Add a new recording and name the file (e.g. test01.js).
Click on the Record button at the bottom to start recording the interaction. Try to fill in the on-screen form. Observe that Puppeteer commands are appended to the file accordingly. Click on the Record button again to stop the recording.
To run the script, follow the Getting started guide in Puppeteer official site.
Please note that this is an early-stage experiment. We plan to improve and expand the Recorder functionality over time.
Chromium issue: 1144127
Font editor in the Styles pane #
To enable the experiment, check the Enable new Font Editor tools within Styles pane checkbox under Settings > Experiments.
The new Font Editor is a popover editor in the Styles pane for font related properties to help you find the perfect typography for your webpage.
The popover provides a clean UI to dynamically manipulate typography with a series of intuitive input types.
Chromium issue: 1093229
CSS flexbox debugging tools #
To enable the experiment, check the Enable CSS Flexbox debugging features checkbox under Settings > Experiments.
DevTools added experimental support for flexbox debugging since last release.
DevTools now draws a guiding line to help you better visualize the CSS
align-items property. The CSS
gap property is supported as well. In our example here, we have CSS
gap: 12px;. Notice the hatching pattern for each gap.
Chromium issue: 1139949
New CSP Violations tab #
To enable the experiment, check the Show CSP Violations view checkbox under Settings > Experiments.
View all Content Security Policy (CSP) violations at a glance in the new CSP Violations tab. This new tab is an experiment that should make it easier to work with web pages with a large amount of CSP and Trusted Type violations.
Chromium issue: 1137837
New color contrast calculation - Advanced Perceptual Contrast Algorithm (APCA) #
To enable the experiment, check the Enable new Advanced Perceptual Contrast Algorithm (APCA) replacing previous contrast ratio and AA/AAA guidelines checkbox under Settings > Experiments.
APCA is a new way to compute contrast based on modern research on color perception. Compared to AA/AAA guidelines, APCA is more context-dependent. The contrast is calculated based on the text's spatial properties (font weight & size), color (perceived lightness difference between text and background), and context (ambient light, surroundings, intended purpose of the text).
Chromium issue: 1121900