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Update: Canary 144, Stable 142, in "Experimental DevTools features" (#3636)
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‎microsoft-edge/devtools/experimental-features/index.md‎

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ms.topic: conceptual
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ms.date: 11/10/2025
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# Experimental features in Microsoft Edge DevTools
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<!--
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Policies to keep this page comprehensive and maintainable:
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First, update all sections re:
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First, inspect latest Canary and update sections:
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* This checkbox is present in Microsoft Edge Canary 123.
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b/c that may add new sections.
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* Favor Canary over Stable re: sequencing.
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* [Get started viewing and changing the DOM](../dom/index.md)
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* [Record heap snapshots using the Memory tool ("Heap snapshot" profiling type)](../memory-problems/heap-snapshots.md)
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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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## Highlights a violating node or attribute in the Elements panel DOM tree
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_new as of Microsoft Edge 106_
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Highlights a violating node or attribute in the **Elements** tool's DOM tree.
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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 saving traces as .gz
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In the **Performance** tool, shows an option to save a performance trace as a `.gz` file.
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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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## Performance panel: enable new, more powerful Ask AI in trace view
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_new as of Microsoft Edge 141_
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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 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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* [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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‎microsoft-edge/devtools/whats-new/2025/05/devtools-136.md‎

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![DOM adorner in Elements](./devtools-136-images/dom-adorner.png)
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To enable this feature, in DevTools experiments, select the checkbox [Highlights a violating node or attribute in the Elements panel DOM tree](../../../experimental-features/index.md#highlights-a-violating-node-or-attribute-in-the-elements-panel-dom-tree).
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## Announcements from the Chromium project

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