Chromatic

Chromatic puts your tabs in rainbow order.

Click the toolbar icon, or press Alt+Shift+R, and the tabs in that window line up red through violet by the color of each site's icon. Light icons gather at the start and dark ones at the end, so the whole strip reads as one gradient. Tab groups move as a block, placed by their group color, with the tabs inside sorted too.

Click again to put everything back where it was. If you've opened, closed or moved a tab since, the next click sorts again instead.

A few details

• Pinned tabs stay put. If every tab in a window is pinned, Chromatic asks before sorting them.
• Tabs from the same site keep their order.
• Unread-count badges on icons are ignored, so a red dot won't turn a blue site red.
• You can change the shortcut at chrome://extensions/shortcuts.

Privacy

Chromatic collects nothing. It makes no network requests and reads icons from Chrome's own cache. The privacy policy has the details.

Get it

The source is on GitHub. I wrote about how it decides what color an icon is in Rainbow Tabs, sorting browser tabs by color.

Questions go to ran.craycraft@gmail.com.