Summary: Introduce tab-level temporal metadata and navigation controls to improve tab management and productivity for users who work with many open tabs.
Description: When multiple tabs are open, it becomes difficult to track which tabs are recent, frequently used, or inactive. All tabs currently appear visually identical aside from title and favicon, which limits situational awareness and slows down workflows.
This proposal introduces a lightweight “Tab Timeline” feature that surfaces useful tab activity information via a hover tooltip.
Proposed Behavior: When the user hovers over a tab, a small tooltip or overlay appears, showing:
Opened: Timestamp when the tab was created
Last Active: Most recent interaction or update time
Time Spent: Total active time spent on the tab
Access Count: Number of times the tab was focused
Navigation Controls:
← Previous tab
Next → tab
Example Tooltip:
Tab Info
Opened: 10:42 AM
Last Active: 11:05 AM
Time Spent: 23 min
Accessed: 18 times
[ ← Previous ] [ Next → ]
Use Cases:
Managing 20–50+ tabs efficiently
Research or study sessions
Development/debugging workflows
Identifying stale or unused tabs
Quickly switching between recently used tabs
Benefits:
Better tab awareness
Faster navigation
Reduced cognitive load
Cleaner session management
Improved productivity for power users
Privacy Considerations: All tracking can remain local to the browser with no telemetry or external data collection.
Optional Enhancements (future ideas):
Sort tabs by last active or time spent
Highlight inactive tabs
Auto-close stale tabs
Tab statistics panel in Tab Manager
Thank you for considering this enhancement to Firefox.
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