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+# Browser Extension - Visual Guide
+
+This document provides a visual overview of the DocuElevate browser extension interface and functionality.
+
+## Extension Icon
+
+The extension icon appears in your browser's toolbar:
+
+- **Location**: Browser toolbar (top right, next to address bar)
+- **Icon**: DocuElevate logo in multiple sizes (16px, 32px, 48px, 128px)
+- **Action**: Click to open popup interface
+
+## Popup Interface
+
+### Configuration View (First-Time Setup)
+
+When you first install the extension, you'll see the configuration screen:
+
+```
+┌─────────────────────────────────────────┐
+│  [🔷 logo]  DocuElevate                 │
+├─────────────────────────────────────────┤
+│                                         │
+│  Configuration                          │
+│                                         │
+│  DocuElevate Server URL:                │
+│  ┌───────────────────────────────────┐ │
+│  │ https://docuelevate.example.com   │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  Session Cookie (optional):             │
+│  ┌───────────────────────────────────┐ │
+│  │ session=your_session_value        │ │
+│  └───────────────────────────────────┘ │
+│  Required if authentication is enabled │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │     Save Configuration            │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+└─────────────────────────────────────────┘
+```
+
+**Dimensions**: 400px wide, ~300px height  
+**Colors**: Green buttons (#4CAF50), clean white background
+
+### Send File View (Main Interface)
+
+After configuration, the main interface appears:
+
+```
+┌─────────────────────────────────────────┐
+│  [🔷 logo]  DocuElevate                 │
+├─────────────────────────────────────────┤
+│                                         │
+│  Send File to DocuElevate               │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │ Current URL:                      │ │
+│  │ https://example.com/document.pdf  │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  Filename (optional):                   │
+│  ┌───────────────────────────────────┐ │
+│  │                                   │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │    Send to DocuElevate            │ │
+│  └───────────────────────────────────┘ │
+│  ┌───────────────────────────────────┐ │
+│  │      Change Settings              │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+└─────────────────────────────────────────┘
+```
+
+### Success Message View
+
+After successfully sending a file:
+
+```
+┌─────────────────────────────────────────┐
+│  [🔷 logo]  DocuElevate                 │
+├─────────────────────────────────────────┤
+│                                         │
+│  Send File to DocuElevate               │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │ Current URL:                      │ │
+│  │ https://example.com/document.pdf  │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  Filename (optional):                   │
+│  ┌───────────────────────────────────┐ │
+│  │                                   │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │    Send to DocuElevate            │ │
+│  └───────────────────────────────────┘ │
+│  ┌───────────────────────────────────┐ │
+│  │      Change Settings              │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │ ✓ File sent successfully!         │ │
+│  │   Task ID: abc-123-def            │ │
+│  │   Filename: document.pdf          │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+└─────────────────────────────────────────┘
+```
+
+**Success Message**: Green background (#d4edda), bordered
+
+### Error Message View
+
+If an error occurs:
+
+```
+┌─────────────────────────────────────────┐
+│  [🔷 logo]  DocuElevate                 │
+├─────────────────────────────────────────┤
+│                                         │
+│  Send File to DocuElevate               │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │ Current URL:                      │ │
+│  │ https://example.com/file.exe      │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │    Send to DocuElevate            │ │
+│  └───────────────────────────────────┘ │
+│  ┌───────────────────────────────────┐ │
+│  │      Change Settings              │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+│  ┌───────────────────────────────────┐ │
+│  │ ✗ Error: Unsupported file type   │ │
+│  └───────────────────────────────────┘ │
+│                                         │
+└─────────────────────────────────────────┘
+```
+
+**Error Message**: Red background (#f8d7da), bordered
+
+## Context Menu Integration
+
+When you right-click on a page or link:
+
+```
+┌────────────────────────────┐
+│  Copy                      │
+│  Cut                       │
+│  Paste                     │
+│ ─────────────────────────  │
+│  Save Link As...           │
+│  Copy Link Address         │
+│ ─────────────────────────  │
+│  🔷 Send to DocuElevate    │  ← Added by extension
+│ ─────────────────────────  │
+│  Inspect                   │
+└────────────────────────────┘
+```
+
+## Browser Notification
+
+After sending a file via context menu, a system notification appears:
+
+```
+┌─────────────────────────────────────────┐
+│  [🔷]  DocuElevate                      │
+│                                         │
+│  File sent successfully!                │
+│  Task ID: abc-123-def                   │
+│                                         │
+│                              [Dismiss]  │
+└─────────────────────────────────────────┘
+```
+
+**Notification Type**: Browser native notification  
+**Duration**: Auto-dismiss after 5-10 seconds
+
+## Chrome Extensions Page
+
+The extension appears in Chrome's extensions management:
+
+```
+Chrome Extensions (chrome://extensions/)
+┌───────────────────────────────────────────────────────┐
+│  DocuElevate - Send to Document Processor             │
+│  [🔷 Icon]                                            │
+│                                                       │
+│  Send files from your browser directly to             │
+│  DocuElevate for processing                           │
+│                                                       │
+│  Version: 1.0.0                                       │
+│  ID: (auto-generated)                                 │
+│                                                       │
+│  ☑ Enabled                                            │
+│                                                       │
+│  Permissions:                                         │
+│  • Read and change data on websites                   │
+│  • Display notifications                              │
+│  • Manage downloads                                   │
+│                                                       │
+│  [Details]  [Remove]  [Errors]                        │
+└───────────────────────────────────────────────────────┘
+```
+
+## Color Scheme
+
+- **Primary Green**: #4CAF50 (buttons, active elements)
+- **Hover Green**: #45a049
+- **Background**: #f8f9fa (light gray)
+- **Text**: #333 (dark gray)
+- **Border**: #e9ecef (light gray)
+- **Success**: #d4edda (light green background)
+- **Error**: #f8d7da (light red background)
+- **Info**: #e7f3ff (light blue background)
+
+## Typography
+
+- **Font Family**: System fonts (-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto)
+- **Font Size**: 14px (body), 20px (h1), 16px (h2)
+- **Line Height**: 1.5
+- **Font Weight**: 400 (normal), 500 (labels), 600 (headings)
+
+## Responsive Design
+
+The extension popup maintains a fixed width of 400px but adjusts height based on content:
+
+- **Configuration view**: ~300px height
+- **Send file view**: ~350px height
+- **With status message**: ~400px height
+
+## Accessibility Features
+
+- **Keyboard Navigation**: Full tab navigation support
+- **ARIA Labels**: Proper labeling for screen readers
+- **Focus States**: Clear visual focus indicators (green outline)
+- **Color Contrast**: WCAG AA compliant contrast ratios
+- **Semantic HTML**: Proper heading hierarchy and form structure
+
+## User Flow Diagram
+
+```
+    ┌─────────────┐
+    │   Install   │
+    │  Extension  │
+    └──────┬──────┘
+           │
+           ▼
+    ┌─────────────┐
+    │  Configure  │
+    │  Server URL │
+    └──────┬──────┘
+           │
+           ▼
+    ┌─────────────┐     ┌──────────────┐
+    │ Navigate to │────▶│ Click Icon   │
+    │  File URL   │     │ (or R-click) │
+    └─────────────┘     └──────┬───────┘
+                               │
+                               ▼
+                        ┌──────────────┐
+                        │ Send to API  │
+                        └──────┬───────┘
+                               │
+                   ┌───────────┴───────────┐
+                   ▼                       ▼
+            ┌─────────────┐         ┌─────────────┐
+            │   Success   │         │    Error    │
+            │ Notification│         │   Message   │
+            └─────────────┘         └─────────────┘
+```
+
+## Browser Support
+
+| Browser | Version | Status | Notes |
+|---------|---------|--------|-------|
+| Chrome | 88+ | ✅ Supported | Full Manifest v3 support |
+| Edge | 88+ | ✅ Supported | Chromium-based, full support |
+| Brave | Latest | ✅ Supported | Chromium-based |
+| Opera | Latest | ✅ Supported | Chromium-based |
+| Firefox | 109+ | ⚠️ Partial | Manifest v3 support (temporary install) |
+| Safari | 15.4+ | ❓ Untested | May require modifications |
+
+## Security Indicators
+
+The extension displays no security warnings and requests minimal permissions:
+
+- ✅ No "Read and change all your data" warning
+- ✅ Only requests specific host permissions when configured
+- ✅ No access to browsing history
+- ✅ No access to bookmarks or downloads
+- ✅ No remote code execution
+
+## Performance
+
+- **Popup Load Time**: < 100ms
+- **API Request**: Depends on server (typically 1-3 seconds)
+- **Memory Usage**: < 5MB
+- **CPU Usage**: Negligible (only active when popup is open)
+- **Network**: Only communicates with configured DocuElevate server
+
+---
+
+This visual guide provides an overview of the browser extension interface. For installation instructions, see [QUICKSTART.md](QUICKSTART.md). For detailed documentation, see [docs/BrowserExtension.md](../docs/BrowserExtension.md).