Debugging & DevTools

Debugging differs by platform. Keep inspection disabled in production builds.

Windows

For the Flet control, use remote_debugging_port and Playwright/CDP — see Playwright (Windows CDP).

The Python control also provides Windows convenience methods:

async def inspect_webview(_):
    version = await webview.get_webview_version()
    print("WebView2 runtime:", version)
    await webview.open_devtools()

These methods raise an unsupported-platform error outside Windows. For automation, remote_debugging_port is usually preferable because it exposes a stable CDP endpoint to Playwright.

Android

Use the platform's WebView inspection tools (for example, Chrome or Edge remote debugging) when supported by the device and OS.

iOS and macOS

WebKit inspection availability depends on the OS version and developer settings. Enable inspection using the device's normal development settings.

Linux

Use the WebKitGTK inspector supplied by the Linux runtime when available.

OHOS and Web

Use the browser or device developer tools supplied by the target platform. On Web, the control is rendered in an iframe and browser same-origin rules apply.

For console output specifically (rather than full DevTools), see Console capture.

See the upstream common API for platform controller details.