Microsoft Edge web platform blog

Blog posts related to the implementation of the web platform in Microsoft Edge, covering web APIs and features, DevTools, WebView 2, and Progressive Web Apps.

The effect of a Windows Contrast theme on Microsoft Edge and on the website that's rendered, thanks for the forcec colors mode.

Removing -ms-high-contrast and embracing standards-based forced colors in Microsoft Edge

The Edge team is excited to announce that the non-standard -ms-high-contrast media feature and -ms-high-contrast-adjust property are now completely removed from Edge, starting with version 138.

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The Interop score chart from the Interop 2025 dashboard. It shows 5 lines going up and to the right, signifying that the 4 tested browsers are getting more interoperable across the selected focus areas, and that the overall interop score is also improving.

The Edge 2025 web platform top developer needs dashboard

Interop is the most effective way we have to collectively catch up on implementation differences and bugs. The project has a good track record of bringing implementations into alignment for the areas that are selected. However, there’s more that web developers need.

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A laptop computer running Windows.

Bring your PWA closer to users with App Actions on Windows

We’re excited to announce that App Actions on Windows are now available for Progressive Web Apps (PWAs). Starting with Edge version 137, you can now publish your PWA to the Microsoft Store to enable App Actions on Windows.

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Microsoft Edge browser window, showing a demo web page that's running the Prompt API.

Simplified access to AI in Microsoft Edge: Introducing the Prompt and Writing Assistance APIs

We’re excited to introduce experimental web APIs in Microsoft Edge that make it easier than ever for web developers to integrate AI into their web applications. The Prompt API and Writing Assistance APIs — now available as developer previews in Edge Canary and Dev channels — give you access to a powerful small language model, Phi-4-mini, that is built into the Edge browser.

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Creating a more accessible web with Aria Notify

ARIA Notify is designed to address scenarios where a visual change that’s not tied to a DOM change and not accessible to assistive technology users, happens in the page. Examples include changing the format of text in a document, or when a person joins a video conference call.

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The Console tool in Edge DevTools, showing a long list of errors, warnings, and messages.

Contextual logging with console.context()

If you work on a large code base with multiple teams, you probably deal with large amounts of logs when inspecting your webapp. This is an area that we’re interested in improving, and are proposing console.context(), a new feature to enable helpful contextual logging in DevTools.

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A webpage that uses CSS gap decorations to draw separators between items.

Minding the gaps: A new way to draw separators in CSS

In this article, we’re introducing CSS gap decorations, a new proposal which we would love your feedback on. If this is of interest to you, read this article and help us shape the future of CSS by providing your feedback.

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A store with the Edge sign on it, and a series of bubbles floating above it, each with the icon of a different addon in it.

Empowering Microsoft Edge Add-ons developers with faster reviews

One of the key issues we hear from extension developers is the time that Microsoft takes to review their extensions. We’re implementing several measures to improve this process. This will allow developers to iterate faster, bringing more innovation to their users, and making the extensions more reliable, robust, and secure.

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The Interop 2025 webpage, showing the interop scores for each browser, and the chart of the overall interop score.

Microsoft Edge and Interop 2025

Microsoft Edge is very pleased to announce our participation in the fifth edition of the Interop project: Interop 2025. We’re joining forces with our colleagues at Apple, Bocoup, Igalia, Google, and Mozilla, to improve interoperability on the web platform.

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