Tab Wheel Scroll is a chome addon to Scroll tabs with alt + mouse wheel OR right click + mouse wheel.
You can download it here: https://chrome.google.com/webstore/detail/tab-wheel-scroll/aknfcgiicpmnfhncpljcadokcghjblal
- Way 1 : Press ALT Key + mouse wheel
- Way 2 : Press mouse right button + mouse wheel
When you scroll your mouse has to be anywhere over the page but not over the tabs.
Also, if you once disabled the extension and re-enable it, all the tabs has to be reloaded to register the event (restart chrome is fine).
It's working on every pages with real content loaded EXCEPT internal "chrome://" pages or "https://chrome.google.com/*" pages.