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Release SDK 1.0.3405.78, for Runtime 139 (Aug. 11, 2025)

Release notes for Microsoft Edge WebView2 SDK, release date: Aug. 11, 2025.

NuGet package for WebView2 SDK 1.0.3405.78

For full API compatibility, this Release version of the WebView2 SDK requires WebView2 Runtime 139.0.3405.78 (Aug. 11, 2025) or later.

Detailed contents:

Promotions to Phase 3 (Stable in Release)

The following APIs have been promoted from Phase 2: Stable in Prerelease, to Phase 3: Stable in Release, and are now included in this Release SDK.

Customize the Find behavior (Find API)

The Find API allows you to programmatically control Find operations, and enables adding the following functionality to your app:

  • Customize Find options, including Find Term, Case Sensitivity, Word Matching, Match Highlighting, and Default UI Suppression.
  • Find text strings and navigate among them within a WebView2 control.
  • Programmatically initiate Find operations, and navigate Find results.
  • Suppress the default Find UI.
  • Track the status of Find operations.

There are known issues with the Find API for PDF documents. When you view a PDF document within a WebView2 control, the Find feature currently only provides the first index and the number of matches found. For example, if the string occurs three times in a PDF, the UI would say 1/3 and would not support programmatically calling Next or Previous.

We're actively investigating these issues, and we encourage you to report any problems you encounter, by using the WebView2Feedback repo.

Previous phase: Customize the Find behavior (Find API) in Prerelease SDK 1.0.3415-prerelease, for Runtime 140 (Jul. 14, 2025).

See also

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