Future Enhancement: Add support for Chrome's native vertical tabs

[malston]

Summary

Track and prepare for Chrome's upcoming native vertical tabs feature. Once Chrome releases native vertical tabs, we should ensure the Tab Organizer extension works seamlessly with this new layout and potentially add vertical-tabs-specific features.

Background

Google is actively developing a native vertical tabs feature for Chrome:

• Feature flag [Vertical Tabs] has been added to Chromium
• Expected to roll out to Chrome Canary first, then stable release
• No firm timeline yet (as of November 2025)
• This will bring Chrome to feature parity with Edge, Firefox, Brave, and Vivaldi

Why Vertical Tabs Matter

Vertical tabs are popular among power users because they:

• Better utilize widescreen monitors (more horizontal space)
• Make tab titles fully readable (no truncation)
• Allow easier tab organization with many tabs open
• Provide better visual hierarchy for grouped tabs

Current Status

• ⏳ Chrome native vertical tabs: In development
• ✅ Our extension: Works with current horizontal tab layout
• ❓ Compatibility: Unknown until feature is released

Proposed Tasks

Phase 1: Research & Monitoring (Now)

• Monitor Chrome Canary releases for vertical tabs feature flag
• Subscribe to Chromium commits related to vertical tabs
• Research Chrome Tab Groups API changes for vertical tabs
• Document any new APIs or capabilities

Phase 2: Compatibility Testing (When Available in Canary)

• Install Chrome Canary with vertical tabs enabled
• Test all existing features:
  • Organize by Domain
  • Organize by Category
  • Remove Duplicates
  • Save to Bookmarks
  • Restore from Bookmarks
  • Remove All Groups
• Document any issues or unexpected behavior
• Test tab group visual appearance in vertical mode
• Verify color coding still works well

Phase 3: Optimization (If Needed)

• Fix any compatibility issues found in testing
• Consider vertical-specific UI improvements:
  • Adjust popup UI if needed for vertical context
  • Optimize tab group naming for vertical display
  • Consider vertical-specific sorting options
• Update documentation with vertical tabs information

Phase 4: Enhancement Ideas (Future)

Potential features specific to vertical tab layout:

• Vertical-aware grouping - Different grouping strategies for vertical layout
• Nested groups - If Chrome supports sub-groups in vertical mode
• Sidebar integration - Potential Chrome sidebar API integration
• Drag-and-drop reordering - Enhanced with vertical space
• Tree-style tabs - If Chrome APIs allow hierarchical display

Resources to Monitor

• Chromium Gerrit: https://chromium-review.googlesource.com/
  • Search for "vertical tabs" commits
• Chrome Canary: https://www.google.com/chrome/canary/
  • Test builds with early features
• Chrome Flags: chrome://flags
  • Look for #vertical-tabs or similar flags
• Chromium Bug Tracker: https://bugs.chromium.org/
  • Track vertical tabs issues

Technical Considerations

API Changes to Watch

1. chrome.tabs API - May add vertical-specific properties
2. chrome.tabGroups API - Could support hierarchical groups
3. chrome.sidePanel API - Possible integration point
4. Window management - New vertical tab window types

Potential Challenges

• Tab group positioning in vertical layout
• Color visibility in vertical sidebar
• Group expansion/collapse behavior
• Integration with existing horizontal groups
• Migration from horizontal to vertical layout

Extension Manifest Changes

• May need new permissions for vertical tab features
• Possible manifest V3 updates for sidebar integration
• Side panel API usage if available

Success Criteria

• ✅ Extension works perfectly with vertical tabs enabled
• ✅ All features function identically in both layouts
• ✅ Tab groups display correctly in vertical mode
• ✅ No visual glitches or layout issues
• ✅ Performance is maintained
• ✅ Documentation updated for vertical tabs users

Priority

Priority: Low (waiting on Chrome release)
Impact: High (affects all users when Chrome releases feature)
Effort: Medium (mostly testing and compatibility)

Updates

This issue will be updated as:

• Chrome vertical tabs feature becomes available
• New APIs are announced
• Compatibility testing reveals findings
• Community feedback is received

Related Links

• Chrome Vertical Tabs News: https://chromeunboxed.com/google-chrome-is-finally-getting-native-vertical-tabs/
• Chromium Feature Development: (link will be added when available)
• Chrome Web Store Guidelines: (may update for vertical tabs)

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Note: This is a tracking issue. No action required until Chrome releases the vertical tabs feature. We'll monitor Chrome Canary and update this issue when the feature becomes testable.

🤖 Generated with Claude Code

Co-Authored-By: Claude noreply@anthropic.com