Devscope – Developer Tool

DevScope is a professional browser developer tool that goes beyond standard DevTools — providing real-time structural analysis, performance profiling, and comprehensive diagnostics in a clean, dockable panel.

Debugging shouldn't mean jumping between scattered panels, losing context, or running external tools. DevScope brings 16+ analysis modules into a single extension — DOM inspection, CSS analysis, performance profiling, security scanning, accessibility audits, SEO checks, network monitoring, and more — all presented in a developer-friendly interface you can resize and dock while you work.

✅ One purpose: on-demand technical inspection and diagnostics for the active webpage
🧩 16+ modules: DOM, CSS, Performance, Security, Accessibility, SEO, Network, Storage, and more
🔒 Privacy-first: 100% local, no tracking, no telemetry, no external servers

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Key Features (at a glance)

* 🧩 DOM Analyzer — deep tree analysis, depth metrics, duplicate ID detection, anti-pattern hints
* 🎨 CSS Inspector — computed styles, specificity conflicts, layout diagnostics, live editing
* 🖱 Inspect Mode — click-to-select elements with breadcrumb navigation and highlight overlay
* ⚡ Performance Profiler — Core Web Vitals, paint timing, resource breakdown, long task detection
* �� Network Overview — requests by type/status, timing analysis, endpoint replay with editable params
* 🔐 Security Scanner — HTTPS validation, security header audit, CSP inspection, mixed content
* ♿ Accessibility Audit — WCAG checks, ARIA validation, contrast and landmark review
* 🔎 SEO Analyzer — meta/Open Graph validation, structured data, heading hierarchy
* 🗂 Storage Inspector — LocalStorage, SessionStorage, Cookies, IndexedDB, Cache API
* 🏥 Site Health Report — prioritized diagnostics (P0/P1/P2) with DX Score (0–100)
* 📦 Bundle Analysis — script/CSS/image sizes, duplicate detection
* 🧠 Framework Detection — React, Vue, Angular, Svelte, jQuery, Next.js, Nuxt.js, Tailwind CSS, Bootstrap with version info

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What DevScope Helps You Do

🧩 Analyze Page Structure

Understand the DOM in depth — complexity, semantic quality, and potential issues.

* Deep DOM tree analysis with depth and complexity metrics
* Duplicate ID detection and orphaned node identification
* Inline style detection and semantic structure checks
* Anti-pattern detection with actionable improvement hints

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🎨 Inspect & Edit Styles Live

Debug CSS issues in real-time without leaving DevScope.

* Computed styles showing what actually applies
* Specificity conflict detection
* Layout diagnostics with box model insights
* Live editing with instant updates and per-property reset

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⚡ Profile Performance

Identify what's slowing down the page — and where to focus.

* Core Web Vitals overview at a glance
* Paint and render timing signals
* Resource timing breakdown by type
* Long task detection and JavaScript execution metrics

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🔐 Scan Security & Headers

Check how well the page protects its visitors.

* HTTPS validation and mixed content detection
* Security header audit: HSTS, CSP, Permissions-Policy, X-Frame-Options
* Per-header status with actionable recommendations
* Security Posture Score (0–100)

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♿ Audit Accessibility

Catch accessibility issues before your users do.

* WCAG compliance checks
* ARIA validation
* Contrast ratio analysis
* Landmark structure review

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🏥 Get a Health Report

One-click prioritized diagnostics for the entire page.

* P0 — Critical issues that need immediate attention
* P1 — Important improvements worth addressing
* P2 — Optimization opportunities for polish
* DX Score (0–100) — unified technical health metric

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📊 Export & Compare

Save and share your findings in developer-friendly formats.

* Export reports in JSON, CSV, or Markdown
* Snapshot & comparison workflow for regression testing
* Per-module export for focused analysis

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Designed for Clarity (Not Feature Bloat)

DevScope packs serious diagnostic power into a focused, ergonomic interface.

* ✨ Dockable layouts: Right, Bottom, and Floating modes
* ⚡ Resizable interface with developer-friendly ergonomics
* 🧠 Shadow DOM isolation — minimal interference with inspected pages
* 🔁 Keyboard shortcut: Ctrl+Shift+D to toggle
* 🌍 Available in 16 languages
* 🎨 Dark / Light themes with system sync

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Privacy & Data

DevScope does not:

* collect personal data
* track your browsing behavior
* run analytics or telemetry
* contact any external servers

It works entirely locally in your browser. All analysis is performed on-device. User preferences are stored in `chrome.storage.local` and never leave your machine.