Features

WebLogcat is a dashboard of independent widgets — one ADB capability per draggable, resizable tile. Pair a device once, then mix and match the widgets you need on a single screen.

Quick start

1. Open the live app in Chrome, Edge, or another Chromium-based browser — WebUSB is required and Firefox / Safari don't ship it.
2. Plug in an Android device with USB debugging enabled.
3. Click Connect a device and accept the on-device authorisation prompt.
4. The dashboard mounts with a single Logcat tile filling the viewport. Use + Add widget in the topbar to grow the layout — Shell, Dumpsys, Files, Screen Mirror, Scripting, or another Logcat. Each new widget splits the focused tile.

No phone handy? Click fake data instead — the dashboard runs against a simulated stream so you can poke around every widget without touching real hardware.

In this section

Page	What it covers
Connecting a device	WebUSB pairing, supported browsers, troubleshooting the chooser
Dashboard & layout	The dwindle layout, swap-drag, resize seams, max / restore, undo / redo
Logcat	Filter chips, level pills, pinned rows, search, heatmap, crash collapse
Shell	Interactive ADB shell, history, clearing scrollback
Dumpsys	Presets and parsed cards vs. raw output
Files	Browsing, pulling, and pushing files over the ADB sync protocol
Screen Mirror	scrcpy-style mirror, hardware buttons, screenshot, MP4 recording
Scripting	Build a control panel from one shell script — inputs, action buttons, and live displays
Simulated stream	The fake-data path for trying everything without a phone
Appearance & settings	Theme, accent, compact mode, performance mode, stream speed

Compatibility

• Browser. Chromium-based only. Chrome, Edge, Brave, Opera all work. Screen Mirror additionally needs WebCodecs (Chromium 94+).
• Transport. HTTPS or localhost. Any other origin blocks the WebUSB device chooser.
• Device. Android with USB debugging on. Shell, Dumpsys, and Files use the shell-protocol v2 spawn (adb v2.x); older devices fall back to an inline notice. Mirror requires a device able to run scrcpy-server-v2.7.jar, which the app pushes for you.