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‎microsoft-edge/devtools/experimental-features/index.md‎

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ms.topic: conceptual
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ms.service: microsoft-edge
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no-loc: ["Enable webhint"]
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ms.date: 07/07/2025
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ms.date: 10/13/2025
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# Experimental features in Microsoft Edge DevTools
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* [Get started viewing and changing the DOM](../dom/index.md)
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-->
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* [Record heap snapshots using the Memory tool ("Heap snapshot" profiling type)](../memory-problems/heap-snapshots.md)
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## Enable vertical drawer configuration
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<!-- checkbox has no "(?)" link pointing to this anchor wording -->
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_new as of Microsoft Edge 139_
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This checkbox has no effect. To move the **Quick View** panel, on the **Quick View** toolbar, click the **Dock Quick View to the right** (!["Dock Quick View to the right" icon](./index-images/dock-quick-view-to-the-right-icon.png)) button.
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See also:
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* [Features of the Quick View toolbar](../overview.md#features-of-the-quick-view-toolbar) in _Overview of DevTools_.
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* [Test text-color contrast using the Color Picker](../accessibility/color-picker.md)
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* [Full accessibility tree view in the Elements tool](../whats-new/2021/02/devtools.md#full-accessibility-tree-view-in-the-elements-tool) in _What's New in DevTools (Microsoft Edge 90)_.
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* [Edit CSS font styles and settings in the Styles pane](../inspect-styles/edit-fonts.md)
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* [Find and fix problems using the Issues tool](../issues/index.md)
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* [View, edit, and delete cookies](../storage/cookies.md)
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* [Inspect, edit, and debug HTML and CSS with the Elements tool](../elements-tool/elements-tool.md)
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* [Using the Page tab to explore resources that construct the current webpage](../sources/index.md#using-the-page-tab-to-explore-resources-that-construct-the-current-webpage) in _Sources tool overview_.
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* [Improved Ignore list setting](https://developer.chrome.com/blog/new-in-devtools-108/#ignore-list)
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* [postMessage events and handlers are distinguished from other events](../whats-new/2024/04/devtools-124.md#postmessage-events-and-handlers-are-distinguished-from-other-events) in _What's New in DevTools (Microsoft Edge 124)_.
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## Performance panel: enable experimental performance insights
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## Performance panel: enable saving traces as .gz
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_new as of Microsoft Edge 141_
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In the **Performance** tool, shows an option to save a performance trace as a `.gz` file.
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See also:
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* [Save and share a recording](../performance/reference.md#save-and-share-a-recording) in _Performance features reference_.
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* [Export a trace from the Performance tool](./share-traces.md#export-a-trace-from-the-performance-tool) in _Share enhanced performance and memory traces_.
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_new as of Microsoft Edge Canary 133_
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<!-- ====================================================================== -->
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## Performance panel: enable new, more powerful Ask AI in trace view
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Enables additional insights within the **Insights** side panel.
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_new as of Microsoft Edge 141_
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To use this experiment, first select the **Performance panel: enable performance insights** checkbox, and then, if you want to see even more insights, also select the **Performance panel: enable experimental performance insights** checkbox.
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In the **Performance** tool, in the trace view, shows an option for a more powerful version of **Ask AI**.
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* [Analyze runtime performance (tutorial)](../performance/index.md)
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* [Analyze a performance recording](../performance/reference.md#analyze-a-performance-recording) in _Performance features reference_.
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* [Console overview](../console/index.md)
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* [Find and fix problems using the Issues tool](../issues/index.md)
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* [Wavy underlines highlight code issues and improvements in Elements tool](../whats-new/2021/04/devtools.md#wavy-underlines-highlight-code-issues-and-improvements-in-elements-tool) in _What's New in DevTools (Microsoft Edge 91)_.
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* [Opening source files in Visual Studio Code](../sources/opening-sources-in-vscode.md) - setting up your workspace.
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* [Troubleshooting common performance issues](../rendering-tools/index.md)
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## Enable Adaptive CPU throttling
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Enables Adaptive CPU throttling.
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* [Throttle the CPU while recording](../performance/reference.md#throttle-the-cpu-while-recording) in _Performance features reference_.
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In the **Performance** tool, displays V8 JavaScript browser engine runtime call stats.
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This experiment makes the **Performance** tool capture newly added traces, to support enhanced traces v2. This feature is being implemented in the upstream Chromium project. This experiment doesn't affect the capabilities of Microsoft Edge to capture enhanced traces and doesn't impact DevTools user's experience.
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This experiment makes the **Performance** tool record script source text in traces. This feature is being implemented in the upstream Chromium project.
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Adds a **Trace Event** section to the **Summary** tab of the **Performance** tool. The **Trace Event** section is displayed when you select an event in a recorded performance trace. The **Trace Event** section displays debugging information about the selected trace event, such as its name and duration.
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* [The first time source files are loaded, breakpoints might not trigger](https://bugs.chromium.org/p/chromium/issues/detail?id=1133307&q=%22instrumentation%20breakpoints%22&can=2)
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* [Mapping minified code to your source code to show readable code](../sources/index.md#mapping-minified-code-to-your-source-code-to-show-readable-code) in _Sources tool overview_.
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