RootCause logo RootCause

Chrome DevTools extension

Stop guessing performance issues. Understand the root cause.

RootCause explains why pages are slow in plain English, traces issue dependencies, and ranks fixes by impact so teams ship improvements faster.

Get started See screenshots
  • Actionable narratives, not raw metrics only
  • Critical vs optimization vs micro-win prioritization
  • Real-time analysis inside DevTools

What you get

Built for practical performance debugging

Everything needed to go from slow page to prioritized fixes without switching tools.

Root-cause narratives

Explains the reason behind performance symptoms, not just “what failed.”

Priority engine

Sorts findings into Critical, Optimization, and Micro-Win so work is focused.

Dependency tracing

Maps issue chains so you can fix upstream causes and unlock multiple gains.

Readable recommendations

Specific and implementable fix guidance for each detected issue.

DevTools-native experience

Runs directly in the RootCause tab next to standard browser debugging tools.

Modern extension architecture

Manifest V3 setup with a clean project structure for maintainability.

Workflow

From inspection to action in four steps

  1. 1

    Open DevTools

    Use F12 or right-click → Inspect on the page you want to optimize.

  2. 2

    Open the RootCause tab

    Switch to the custom panel integrated into your DevTools workspace.

  3. 3

    Run analysis

    Click Analyze Page to capture metrics, dependencies, and bottlenecks.

  4. 4

    Ship prioritized fixes

    Work top-down by impact and validate improvements on the next run.

Product view

Inside the RootCause panel

Real screenshot from the extension UI.

RootCause analysis panel with metrics and prioritized insights
Analysis panel showing metrics summary, categorized issues, and actionable recommendations.

Installation

Get running in minutes

  1. Clone repository

    git clone https://github.com/Yashrajsalunkhe/RootCause-Extension.git
cd Extenction

  2. Load unpacked extension

    Open chrome://extensions/, enable Developer mode, then click Load unpacked.

  3. Analyze any page

    Open DevTools and run analysis from the RootCause tab.