KeepUp - Smart Bookmarking Extension for Sequential Content

A production-ready Firefox Manifest V3 extension that revolutionizes how you track sequential content like manga chapters, online courses, TV episodes, and more.

🚀 Quick Start

Installation (2 minutes)

1. Open Firefox and go to about:debugging
2. Click "Load Temporary Add-on..."
3. Select the manifest.json file from this folder
4. KeepUp is now active!

See INSTALLATION_GUIDE.md for detailed beginner-friendly instructions.

✨ Core Features

• Dynamic Tracking: Create tracking entries for any series/course/content
• Auto-Update Detection: Automatically updates your position when you navigate to new chapters/episodes
• Manual One-Click Update: Override auto-detection with a single button click
• Granular History: Every update is timestamped and logged (format: YYYY-MM-DD HH:MM:SS)
• Data Portability: Export to JSON for backup, import to restore
• Clean UI: Modern, minimal design with dark/light mode support

📁 Project Structure

bookmarks/
├── manifest.json               # Firefox MV3 configuration
├── popup.html                  # Extension popup interface
├── popup.js                    # UI logic, import/export handling
├── background.js               # Service worker with auto-update logic
├── styles.css                  # Modern, responsive styling
├── icons/                      # Extension icons
│   ├── icon-16.png
│   ├── icon-48.png
│   └── icon-128.png
├── README.md                   # This file
└── INSTALLATION_GUIDE.md       # Step-by-step user guide

🎯 How It Works

Add a Tracking Entry

1. Navigate to the content you want to track (e.g., a manga chapter)
2. Click the KeepUp icon
3. Click "Add Current"
4. Done! Entry created and tracked

Auto-Update

• When you navigate to the next chapter/episode on the same domain
• KeepUp automatically updates the tracking entry
• All changes are logged with precise timestamps

Manual Update

• Click "Update Now" to manually sync the entry to the current page
• Useful if auto-detection doesn't trigger (different site navigation patterns)

View History

• Click "History" on any entry to see the complete update timeline
• See exactly when you reached each chapter/episode/lecture

Export/Import Data

• Export: Backup all entries and history as JSON
• Import: Restore from backup on the same device or transfer to another

🔧 Technical Details

Technology Stack

• Language: Vanilla JavaScript (no frameworks)
• Manifest Version: 3 (Firefox compatible)
• Storage: Firefox browser.storage API
• UI: Clean HTML5 + CSS3 with CSS variables for theming

Key Technologies Used

• Firefox WebExtensions API (browser.tabs, browser.storage.local)
• Session storage for tab URL tracking
• URL parsing for domain extraction
• JSON serialization for data portability

Permissions Required

• storage - Store tracking entries and history
• tabs - Access tab information and monitor navigation
• <all_urls> - Track navigation on any domain

📋 File Descriptions

manifest.json

Firefox extension configuration defining:

• Extension metadata (name, version, description)
• Required permissions
• Service worker entry point
• Popup UI definition
• Icon definitions

popup.html

Main user interface featuring:

• Header with extension branding
• Quick action buttons (Add Current, Update Now)
• Tracking entries list
• Data management buttons (Export, Import)
• Status message display area

popup.js (UI Controller)

Complete implementation of:

• Event listeners for all buttons
• Tracking entry creation and deletion
• History modal window
• Export to JSON functionality
• Import from JSON with validation
• Real-time entry rendering

background.js (Service Worker)

Backend logic implementing:

• Tab URL change monitoring
• Auto-detection of next content navigation
• Automatic tracking entry updates
• Badge updates showing tracking status
• Timestamp-based history logging

styles.css

Modern styling including:

• CSS variables for theming support
• Dark/light mode detection
• Smooth transitions and animations
• Responsive design
• Clean typography and spacing

🎨 UI/UX Highlights

• Minimal Clicks: Add or update entries with just one click
• Clean Design: Modern sans-serif fonts, smooth transitions, professional color palette
• Visual Feedback: Status messages, badges, and hover states
• Dark Mode: Automatically respects system preferences
• Accessibility: Focus indicators, semantic HTML, clear visual hierarchy

📊 Data Structure

Storage Format

{
  "keepup_entries": [
    {
      "id": "entry_1716370200000_abc123xyz",
      "title": "Manga Chapter 50",
      "url": "https://example-manga.com/series/xyz/chapter-50",
      "domain": "example-manga.com",
      "dateAdded": "2024-05-22 10:30:15",
      "lastUpdated": "2024-05-22 16:45:33",
      "history": [
        {
          "timestamp": "2024-05-22 10:30:15",
          "url": "https://example-manga.com/series/xyz/chapter-50"
        },
        {
          "timestamp": "2024-05-22 14:20:19",
          "url": "https://example-manga.com/series/xyz/chapter-51"
        }
      ]
    }
  ]
}

Export Format

Complete snapshot of all entries with version info for future compatibility.

🔒 Privacy & Security

• Local Only: All data stored locally in Firefox, never sent to servers
• No Tracking: Extension doesn't track user behavior beyond what's needed
• No Analytics: No telemetry or analytics collection
• No External Calls: All processing happens locally in the browser

🐛 Troubleshooting

See INSTALLATION_GUIDE.md for comprehensive troubleshooting, including:

• Extension not appearing in toolbar
• Auto-update not working on specific sites
• Import/export issues
• Data recovery procedures

💡 Use Cases

Perfect For:

• Manga Readers: Track chapters across different manga sites
• Online Students: Follow courses on platforms like Udemy, Coursera, edX
• TV Show Fans: Remember where you are in series on streaming platforms
• Webcomic Readers: Track your progress through web serials
• Audiobook Listeners: Keep track of current position
• Blog Series: Follow multi-part articles and tutorials

📝 Notes for Developers

Code Quality

• All code is written without placeholders
• Complete implementations for all features
• Clean, readable variable and function names
• No // ... implement this ... comments
• Proper error handling throughout

Extensibility

To add new features:

1. Extend storage schema in popup.js and background.js
2. Add UI elements in popup.html
3. Style with CSS variables for consistency
4. Update manifest.json if new permissions needed

Testing

Manual testing steps included in INSTALLATION_GUIDE.md, including:

• Adding entries
• Testing auto-update
• Testing manual updates
• Export/import verification

📄 License

This extension is provided as-is for personal use.

🎓 Learning Resources

This project demonstrates:

• Modern Firefox WebExtensions API usage
• Service Worker patterns for background tasks
• Storage API for persistent data
• Event delegation for dynamic DOM
• JSON serialization and file handling
• Responsive CSS with dark mode support
• Clean JavaScript patterns without frameworks

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Ready to start tracking? See INSTALLATION_GUIDE.md to get started in minutes!