What's New in DevTools (Microsoft Edge 81)

To check out the latest features of Microsoft Edge DevTools and the Microsoft Edge DevTools extension for Microsoft Visual Studio Code and Visual Studio, read these announcements.

To stay up to date and get the latest DevTools features, download an Insiders preview version of Microsoft Edge. Whether you're on Windows, Linux, or macOS, consider using Canary (or another preview channel) as your default development browser. The Beta, Dev, and Canary versions of Microsoft Edge run as separate apps, side-by-side with the stable, released version of Microsoft Edge. See Microsoft Edge Insider Channels.

For the latest announcements, follow the Microsoft Edge team on Twitter. To report a problem with DevTools or ask for a new feature, file an issue in the MicrosoftEdge/DevTools repo.

Announcements from the Microsoft Edge DevTools team

Accessibility improvements to the DevTools

The DevTools team has contributed 170 changes to Chromium to address high-impact color contrast, keyboard, and screen reader issues in the DevTools. Every developer building the web should be able to use the DevTools.

The Performance tool in the DevTools with the keyboard navigation and screen reader improvements

Want to learn how to make your web page accessible to all of your users? Download the Accessibility Insights and webhint extensions for Microsoft Edge to get started.

If you use screen readers or the keyboard to navigate around the DevTools, send us your feedback by tweeting at us or clicking the Send Feedback icon!

Chromium issue #963183

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Using the DevTools in other languages

Many developers use other developer tools, like StackOverflow and Visual Studio Code, in their native language, not just in English. We're excited to announce localization for the DevTools, which you can now use in one of 10 languages besides English:

  • Chinese (Simplified) - 中文(简体)
  • Chinese (Traditional) - 中文(繁體)
  • French – français
  • German - deutsch
  • Italian - italiano
  • Japanese - 日本語
  • Korean - 한국어
  • Portuguese - português
  • Russian – русский
  • Spanish - español

The DevTools automatically match the language you use for Microsoft Edge in edge://settings/languages.

If you want Microsoft Edge to be in one language and your DevTools to remain in English, press F1 in DevTools to open Settings and disable Match browser language.

The DevTools in German

Console messages aren't localized. Only the strings used in the DevTools UI are displayed in the language you use for Microsoft Edge.

If you want to use the DevTools in a different language than the ones that are available, tweet at us or click the Send Feedback icon.

Chromium issue #941561

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webhint Microsoft Edge extension

The webhint Microsoft Edge extension allows you to easily scan your web page and get feedback on accessibility, browser compatibility, security, performance, and more within the DevTools. Read more at https://webhint.io.

The Hints tool in the DevTools when the webhint browser extension is installed

Try the webhint browser extension in Microsoft Edge. Once you install the extension, open the DevTools and select the Hints tool. From here, run a customizable site scan. Head over to webhint.io to learn more.

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3D View

Use the 3D View to debug your web application by navigating through the Document Object Model (DOM) or the z-index stacking context.

The 3D View in the DevTools

To access the 3D View, press Ctrl+Shift+P to open the Command Menu, start typing 3d view, and then select Show 3D View.

The Microsoft Edge team is working with the Chromium team on the UI and adding more functionality to the 3D View, so please use the Send Feedback icon!

Chromium issue #987787

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Visual Studio Code extensions

The DevTools team has also released some extensions for Visual Studio Code that let you use the power of the DevTools directly from your text editor! Check out the extensions below:

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Elements for Microsoft Edge

Use the Elements tool from within Visual Studio Code by adding the Elements for Microsoft Edge Visual Studio Code extension.

The Elements tool in Visual Studio Code using the Elements for Microsoft Edge extension

Update: As of 2022, the Elements for Microsoft Edge extension is now the Microsoft Edge DevTools extension for Visual Studio Code.

For more information, check out Microsoft Edge DevTools extension for Visual Studio Code.

Debugger for Microsoft Edge

With the Debugger for Microsoft Edge Visual Studio Code extension, debug JavaScript running in Microsoft Edge directly from Visual Studio Code.

The Debugger for Microsoft Edge Extension in Visual Studio Code

Update: As of 2022, the Debugger for Microsoft Edge Visual Studio Code extension has been replaced by a built-in debugger for Microsoft Edge in Visual Studio Code. See Debug Microsoft Edge in Visual Studio Code.


The webhint Visual Studio Code extension uses webhint to improve your web page while you are writing it. This extension runs and reports diagnostics on your workspace files based on webhint analysis.

The webhint Visual Studio Code extension analyzing a .tsx file in Visual Studio Code

Learn more about the Visual Studio Code webhint extension.

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Visual Studio integration

In Visual Studio 2019 version 16.2 or later, use the Visual Studio debugger to debug JavaScript running in Microsoft Edge. Download Visual Studio 2019 to try this feature out!

Visual Studio with the option to launch your web app in Microsoft Edge Canary, Dev, or Beta

To learn more about debugging Microsoft Edge from Visual Studio, see Visual Studio for web development.

Tracking prevention Console messages

Tracking prevention is a unique feature in Microsoft Edge that protects you from being tracked by websites you have not visited before. The default tracking prevention setting is Balanced mode, which blocks 3rd party trackers and known malicious trackers for an experience that balances privacy and web compatibility. To give you more insight into the compatibility of your web page when certain trackers are blocked, warning messages were added in the Console when a tracker is blocked.

Messages in the Console when tracking prevention blocks access to storage for a tracker

Read more about tracking prevention and the balance between privacy and web compatibility.

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Announcements from the Chromium project

The following sections announce additional features available in Microsoft Edge 81 that were contributed to the open source Chromium project.

Moto G4 support in Device Mode

After enabling the Device Toolbar, simulate the dimensions of a Moto G4 viewport from the Device list.

Simulating a Moto G4 viewport

Click Show Device Frame to show the Moto G4 hardware around the viewport.

Showing the Moto G4 hardware

Related features:

  • Open the Command Menu and run the Capture screenshot command to take a screenshot of the viewport that includes the Moto G4 hardware (after enabling Show Device Frame).
  • Throttle the network and CPU to more accurately simulate a mobile user's web browsing conditions.

Chromium issue #924693

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Blocked cookies in the Cookies pane

The Cookies pane in the Application panel now displays blocked cookies with a yellow background.

Blocked cookies in the Cookies pane of the Application panel

Chromium issue #1030258

The Cookies tables in the Network and Application tools now include a Priority column.

Caution: Chromium-based browsers, like Microsoft Edge, are the only browsers that support cookie priority.

Chromium issue #1026879

All cells in the Cookie tables are editable now, except cells in the Size column because that column represents the network size of the cookie, in bytes. For an explanation of each column, see Fieldsin View, edit, and delete cookies.

Editing a cookie value

To get a fetch expression that includes cookie data, right-click a network request, and then select Copy > Copy as Node.js fetch.

Copy as Node.js fetch

Chromium issue #1029826

More accurate web app manifest icons

Previously, the Manifest pane in the Application panel sent its own requests in order to display web app manifest icons. DevTools now shows the exact same manifest icon that Microsoft Edge uses.

Icons in the Manifest pane

Chromium issue #985402

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Hover on CSS content properties to display unescaped values

In the Styles pane of the Elements tool, to display the unescaped version of a value of a content property, hover on the value.

For example, in this demo when you inspect the p::after pseudo-element an escaped string is displayed in the Styles pane:

The escaped string

When you hover on the content value, the unescaped value is displayed.

The unescaped value

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More detailed source map errors in the Console

The Console now provides more detail on why a source map failed to load or parse. Previously it just provided an error without explaining what went wrong.

A source map loading error in the Console

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Setting for disabling scrolling past the end of a file

To prevent the default UI behavior that allows you to scroll well past the end of a file in the Sources panel, open Settings and then clear the checkbox Preferences > Sources > Allow scrolling past end of file.

Disabling Allow scrolling past end of file

Scrolling past the end of a file is now disabled in the Sources panel

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Portions of this page are modifications based on work created and shared by Google and used according to terms described in the Creative Commons Attribution 4.0 International License. The original page is found here and is authored by Kayce Basques (Technical Writer, Chrome DevTools & Lighthouse).

Creative Commons License This work is licensed under a Creative Commons Attribution 4.0 International License.