1. Open Firefox and type the below Code in addressbar:
about:config
into address bar
2. Press:
Code:
I’ll be careful, I promise
3. Type:
Code:
browser.ctrlTab.previews
into Filter
4. change “false” value become “true” value.
5. Restart Firefox
6. Now, open than 3 tabs and press Ctr + Tab (ctrl+t)
