Hey everyone! 👋

I made a small Vivaldi CSS mod called VivaldiCollapsibleTabbar for people who use the left tab bar with auto-hide and want a cleaner, more space-efficient layout.

What it does

• Makes the left tab bar feel collapsible/compact
• Works nicely with auto-hide mode
• Helps reduce UI clutter while keeping tabs quickly accessible
• uses theme setting to ensure consistent styling

Repo

https://github.com/firzanruzain/VivaldiCollapsibleTabbar

Version

Current tagged version: 0.1.2.1

Vivaldi Version Used: 8.0.4033.54 (Official Build) (64-bit)

Built with

• CSS only (no extra tools required)

Why I made it

I wanted a setup that keeps the tab bar out of the way when I’m focused, but still easy to reveal when navigating lots of tabs. This mod is my take on that balance.

Feedback welcome

If you try it, I’d really appreciate:

• bug reports
• compatibility notes (OS / Vivaldi version)
• ideas for improvements (animations, sizing, behavior tweaks)

If there’s interest, I can keep iterating and add optional style variants.