Skip Unloaded Tabs (Zen) Switch to the next/previous loaded tab in Zen Browser while skipping any unloaded (discarded/sleeping) tabs. IMPORTANT: This add-on only works with your Logitech horizontal wheel if you map the wheel to custom keystrokes in Logi Options+. The browser cannot capture raw horizontal scroll events. Features

Skip unloaded tabs: Jumps over tabs with discarded === true.
Wrap-around: Keeps cycling through tabs in the current window.
Respects pinned tabs: Loaded pinned tabs are included; unloaded pinned tabs are skipped.

Files

manifest.json
background.js

Requirements

Zen Browser
Logi Options+

Default Shortcuts The manifest suggests cross-platform shortcuts you can customize:

Next loaded tab: Ctrl+Shift+Up
Previous loaded tab: Ctrl+Shift+Down

You can change them any time in about:addons → gear icon → "Manage Extension Shortcuts". Note: Browser-reserved keys like Ctrl+Tab/Ctrl+Shift+Tab cannot be bound by extensions. Logitech Horizontal Wheel Mapping (Required) To make the thumb wheel trigger the extension commands:

In Logi Options+, create or edit the Zen app profile.
Assign Keyboard Shortcuts for the thumb wheel:
Scroll Up → Ctrl+Shift+Up (or your chosen "Next" shortcut)
Scroll Down → Ctrl+Shift+Down (or your chosen "Previous" shortcut)
Ensure you are NOT using the built-in "Switch Tabs" action; it will wake sleeping tabs.

How It Works

background.js listens for extension commands.
It queries tabs in the current window sorted by tab.index.
Starting from the active tab, it finds the next/previous tab where tab.discarded === false.
It activates that tab via browser.tabs.update(tab.id, { active: true }).