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Upgrade Guide: From Open-Source to Full Extension

This guide helps you migrate from the open-source edition to the full MarkView extension available on Chrome Web Store.

Why Upgrade?

The full MarkView extension includes powerful productivity features not available in the open-source edition:

🚀 Productivity Boost

  • Auto-Refresh - Live preview updates when files change (perfect for writing)
  • Folder Browser - Navigate your entire markdown project structure
  • Folder Search - Search content across all markdown files in a folder
  • Folder Bookmarks - Quick access to frequently used directories
  • Recent Documents - Instantly reopen your last 100 markdown files

🎨 Enhanced Experience

  • 14 Syntax Highlighting Themes - Customize code block appearance
  • Advanced TOC - Collapsible headings up to H6 with scroll sync
  • Font Customization - Choose from 9 beautiful font families
  • Resizable Sidebars - Adjust sidebar widths to your preference
  • Image Viewer - Professional lightbox with zoom, pan, and gallery navigation
  • Reading Progress Bar - Visual indicator of your position in the document

📄 Export & Presentation

  • HTML Export - Convert markdown to clean HTML
  • DOCX Export - Convert to Microsoft Word format
  • Presentation Mode - Turn markdown into slideshows

🌐 Multi-Language Support

  • Interface available in 12 languages: English, Vietnamese, German, Spanish, French, Indonesian, Japanese, Korean, Portuguese, Russian, Chinese (Simplified & Traditional)

⚡ Convenience

  • Automatic Updates - Always get the latest features and bug fixes
  • One-Click Installation - No build process required
  • Chrome Web Store Integration - Trusted and verified by Google

Installation Steps

Step 1: Install from Chrome Web Store

Choose your browser:

For Chrome / Chromium / Brave / Opera

  1. Visit Chrome Web Store - MarkView
  2. Click "Add to Chrome"
  3. Confirm by clicking "Add extension"

For Microsoft Edge

  1. Visit Edge Add-ons - MarkView
  2. Click "Get"
  3. Confirm by clicking "Add extension"

Step 2: Enable File URL Access

To view local markdown files, you must enable file access:

  1. Navigate to chrome://extensions/ (or edge://extensions/ for Edge)
  2. Find MarkView in the extension list
  3. Click "Details"
  4. Scroll down to "Allow access to file URLs"
  5. Toggle the switch to ON

Step 3: Remove Open-Source Edition (Optional)

If you manually loaded the open-source edition:

  1. Go to chrome://extensions/
  2. Find the manually loaded "MarkView" extension
  3. Click "Remove"
  4. Confirm removal

Note: Removing the open-source edition will not affect the full extension.

Configuration Migration

⚠️ Important: Settings Are Not Migrated

The open-source edition and full extension store settings separately. You'll need to reconfigure:

  • Theme preference (Light/Dark/Auto)
  • Custom CSS (if you added any)
  • Plugin configuration (if you modified)

Settings NOT affected:

  • Browser permissions (you'll need to re-grant file URL access)
  • Recent documents (full extension starts with empty history)

Getting Help

Support Resources

Before Contacting Support

  1. Check if your issue is addressed in the FAQ
  2. Search existing GitHub issues
  3. Try disabling other extensions to rule out conflicts
  4. Check browser console for errors (F12 → Console tab)

Troubleshooting

Extension Not Working After Installation

Solution:

  1. Ensure "Allow access to file URLs" is enabled in extension settings
  2. Refresh the markdown file tab (press F5)
  3. Try opening a different markdown file
  4. Check if the URL ends with .md, .markdown, or .mdx

Features Missing After Upgrade

Solution:

  1. Verify you installed the full extension (check version in popup)
  2. Some features require PRO license (check License tab in popup)
  3. Ensure you're viewing a markdown file (not HTML rendered version)

Cannot Activate PRO License

Solution:

  1. Verify you copied the complete license key from email
  2. Check your internet connection (activation requires online access)
  3. Try again in a few minutes (API rate limiting)
  4. Contact support with your order number

Stay Updated

Subscribe to Updates

Changelog

See the Chrome Web Store listing for the latest update notes.

Feedback

We'd love to hear from you!

Ready to upgrade? Install MarkView from Chrome Web Store

Last Updated: January 2026