The professional on-device developer browser. Tap any element to inspect the DOM tree, live edit HTML/CSS, monitor network waterfall timelines, evaluate JavaScript in a live REPL, and diagnose Web Vitals on your phone or tablet.
Debug responsive CSS layout bugs, test REST/GraphQL network calls, inspect cookies, and run quick scripts anytime, anywhere.
Touch any element directly on the screen with a visual bounding box to highlight, isolate, and inspect its DOM hierarchy.
Modify HTML attributes, edit text, toggle inline CSS styles, or delete DOM nodes with instant live updates on the webpage.
Capture all fetch() and XMLHttpRequest traffic. View latency timings, payload bodies, and export to cURL.
Intercept logs, warnings, errors, and unhandled exceptions. Execute arbitrary JavaScript with full command history navigation.
View, create, edit, and clear localStorage, sessionStorage, and document.cookie entries on demand.
Measure First Contentful Paint (FCP), DOM Interactive, Total Transfer Size, and active V8 JS Heap memory allocation.
Test the interactive panels below to see how easy it is to inspect DOM, evaluate JavaScript, and monitor network requests on Android.
See how it compares against traditional desktop remote debugging and alternative mobile consoles.
| Feature | Tap & Trace | Chrome Remote (USB) | Eruda Console | Tools Browser / F12 |
|---|---|---|---|---|
| On-Device Standalone | ✓ Yes (100% On-Phone) | ✗ Needs PC & Cable | ✓ Yes | ✓ Yes |
| Tap-to-Inspect DOM | ✓ Live Touch Overlay | ✓ Yes (via PC Mouse) | ✓ Yes | ✗ Limited |
| Network Waterfall Timing | ✓ Visual Timeline & Timing | ✓ Yes (on PC) | ✗ List Only | ✗ List Only |
| cURL & Fetch Script Export | ✓ One-Tap Copy | ✓ Right Click on PC | ✗ No | ✗ No |
| Live CSS & Attribute Editing | ✓ In-place Live Edit | ✓ Yes (on PC) | ✓ Partial | ✗ View Only |
| Storage CRUD (Local/Session/Cookies/IDB) | ✓ Add, Edit, Delete | ✓ Yes (on PC) | ✓ Yes | ✗ View Only |
| Mobile-First Touch UX | ✓ Material 3 Dock & Resize | ✗ Desktop Window | ✗ Floating Button Overlay | ✗ Basic Web Layout |
| No Root or USB Required | ✓ Zero Setup | ✗ Developer Options + Cable | ✓ Script Injection | ✓ Zero Setup |
No! Tap & Trace is 100% standalone and runs completely on your Android device. It uses Android's native WebView JavaScript engine and does not require root permissions, ADB setup, or a computer.
Yes. You can inspect local dev servers running on your Wi-Fi network (e.g. http://192.168.1.100:3000) or local emulator ports seamlessly with cleartext HTTP support enabled.
When you tap the Target icon in the toolbar, touch mode activates on the page. Touching any HTML element displays a live bounding box with tag name, CSS class badges, and dimensions, then isolates it in the DOM tree.
Never. All DevTools parsing, DOM extraction, console logs, and network interception are executed strictly on-device in isolated memory. No telemetry, browsing history, or auth tokens ever leave your device.
Download Tap & Trace and start inspecting, diagnosing, and optimizing web applications directly on your phone.