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Mirra

One Action, Two Browsers. Zero Lag.

Dual-Pane Workspace
Instant Mirroring
Visual Diffing
Download Alpha

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The Testing Bottleneck

  • Comparing Staging vs. Production is manual & slow
  • "Alt-Tab" fatigue from switching windows
  • Visual bugs slip through cracks
  • Accessibility auditing is disjointed
Chaotic Tabs
Split View Solution

Enter Mirra

One App. Two Browsers. Zero Lag.

Dedicated Workspace

No more window juggling. Your testing environment is contained and controlled.

Synchronized Mirroring

Interact once, test twice.

  • Scroll Sync
  • Click Mirroring
  • Keyboard Input
  • Chrome DevTools Protocol (CDP)
🖱️
Source
➜
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Target

Pixel-Perfect Accuracy

Instant visual diff with heatmap overlay. Catch even the smallest pixel deviations automatically.

Heatmap Comparison
Overlay Mode

Overlay Mode

Stack pages for precise comparison.

  • Transparency Control: Adjust overlay opacity
  • Pixel Alignment: Perfect element matching
  • Quick Toggle: Instant view switching

Debug Deeper

  • Console Sync: Compare logs side-by-side
  • Network Monitor: Spot 404s & Slow Requests
  • Diffing: Highlight errors in Target only
Console Sync
Accessibility Auditing

Accessibility Auditing

Powered by axe-core

  • Compare A11y Scores
  • Identify Regressions (New Errors)
  • Highlight Improvements (Fixed Errors)

Developer Toolkit

📏

Smart Ruler

Measure padding & margins instantly.

📑

Bookmarks

Save session pairs for daily workflows.

⌨️

Hotkeys

Toggle features without leaving keyboard.

Built for Speed

Native performance meets web flexibility.

Core Architecture

WPF + .NET

Built on a high-performance native stack. We chose .NET over Electron to ensure minimal memory footprint and zero input latency during high-speed mirroring.

Rendering Engine

WebView2

Powered by the latest Chromium edge-rendering engine ensuring 100% modern web compatibility.

Protocol

Direct CDP

Bypasses standard drivers to inject events directly via Chrome DevTools Protocol.

When to use Mirra?

Regression

Compare v1 vs v2 before release to ensure no features have been broken.

Environment

Verify Staging matches Production exactly, spotting configuration drifts.

Modernization

Compare Legacy App vs New React App to ensure pixel-perfect parity.

MIRRA

Test Smarter, Not Harder.

Download Alpha v1.0

github.com/your-repo/mirra
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