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pywebview v6.2.1 Release Notes

Release Date: 2026-04-15 // about 2 months ago

  • 🛠 🐞 Bug fixes

    • Winforms Fix screen scale reporting in Screen object.

Previous changes from v6.2

  • ⚡ Features

    • All Display scaling support for Screen class. Screen objects now report proper DPI-aware dimensions. New properties include scale, dpi, physical_x, physical_y, physical_width and physical_height.
    • All New multiprocess example demonstrating multi-process architecture with a non-blocking architecture.
    • 👍 All Support for state index notation (eg. window.state["attribute"]) for easier state access.
    • All Bump minimum Python version to 3.8.

    🚀 Improvements

    • 👍 All Support for static methods for JS API exposure. Thanks @ivanovmatveywork. #1770
    • Cocoa Improved file picker to use all MIME types from accept attribute in NSOpenPanel. Wildcard types (image/, video/) are now properly mapped to their supertype UTIs. Thanks @JMHSV. #1781 #1780
    • 👍 Cocoa Icon support. Thanks @sevilla. #1757
    • 👍 Winforms Icon support. Thanks @sevilla. #1755
    • Winforms Improved theme detection using AppsUseLightTheme registry key instead of SystemUsesLightTheme. Thanks @Mnaisuka. #1760
    • Winforms Fallback to coreclr when netfx runtime is not found. Thanks @HZBHZB1234. #1791
    • ⚡️ EdgeChromium Update WebView2 to 1.0.3856.49
    • QT Support for REMOTE_DEBUGGING_PORT via webview.settings['REMOTE_DEBUGGING_PORT']. Thanks @cybergrind. #1740

    🛠 🐞 Bug fixes

    • 🔊 All Fix file pattern parsing in file dialogs.
    • All Fix window.expose race condition.
    • 🏁 All Fix 'WindowsPath' object has no attribute '_hash'. Thanks @jonathanbluhm. #1762 #1776
    • 🚀 Cocoa Fix use-after-free crash on macOS ARM64 by disabling releasedWhenClosed. NSWindow now properly manages retain count. Thanks @smparkes. #1799
    • Cocoa Fix single app delegate - use a single shared AppDelegate instead of one per window. Thanks @smparkes. #1801
    • Cocoa Clear delegates before removing from instances dict in windowWillClose_ to prevent callbacks after window closure. Thanks @smparkes. #1802
    • Cocoa Fix input file accept parameter handling. #1604
    • Cocoa Prevent crash in windowDidBecomeKey_ when window is closed.
    • 🚀 Cocoa Release retained instances on window close to prevent memory leaks in macOS Tahoe. Thanks @AlecHaring. #1743
    • 🍎 Cocoa Fix macOS drag handler. Thanks @AlecHaring. #1742
    • 👍 Winforms Fix window position scaling for proper multi-monitor support.
    • Winforms Fix logical pixels calculation for DPI-aware rendering.
    • 🚦 Winforms Fix Ctrl+C signal handling.
    • QT Fix resize problem.
    • 🚚 QT Fix mousemove exception and other minor issues.
    • GTK Fix menu rendering.
    • GTK Fix response_received events when there's no request_sent event. Thanks @jmuchemb. #1784
    • GTK Fix background color not being applied correctly. #1811
    • 👉 EdgeChromium Better exception handling in clear_user_data.