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Can Chrome Sidebar Auto-Expand on Hover and Hide When Mouse Leaves?
Chrome browser Side Panel API restriction prevents implementing hover-to-expand and auto-hide functionality. However, VertiTab's web sidebar supports this feature.
Chrome browser side panel cannot implement hover-to-expand and auto-hide-on-mouse-leave functionality.
This is a browser Side Panel API limitation that extensions cannot change.
Why Can't This Be Implemented?
Chrome Side Panel API does not allow extensions to:
- •Detect if mouse is hovering at browser edge
- •Programmatically open/close the side panel
- •Implement hover expand, leave hide interactions
This is a browser architecture design limitation.
VertiTab Web Sidebar - Supports Hover Expand
While the browser side panel doesn't support this, VertiTab's web sidebar can implement this feature!
Web Sidebar Features
- •🎯 Hover to expand: Tab bar automatically expands when mouse moves to page edge
- •🔄 Auto-hide on leave: Automatically collapses when mouse leaves
- •📐 Custom position: Can be set on left or right side of page
- •📏 Custom width: Not limited to 360px minimum width
- •⚡ Instant response: Quick tab access without clicking
How to Enable Web Sidebar
- •Open VertiTab extension settings
- •Find "Web Sidebar" option
- •Enable and set trigger position and width
Manage Tabs with VertiTab
VertiTab offers multiple usage modes to meet different needs:
- •🌳 Browser side panel: Most complete features
- •💡 Web sidebar: Supports hover expand
- •⚡ Popup window: Custom window size