Only three tabs.
Total focus.
Your browser isn't a hoarding space. ThreeTabs caps your open tabs and quietly turns away the rest, so you finish the thing in front of you.
Watch it in 28 seconds
Thirty tabs. One extension. Sound on for the full effect.
How it works
No dashboards. No guilt. Just a hard limit.
Pick your limit
Three by default. Change it to anything from 1 to 50 in settings.
Try to open another
Ctrl+T, a link, a new window — if you're at the limit, the new tab never gets to exist.
Stay in the flow
Finish, close a tab, then open the next. One thing at a time.
Small, sharp, honest
Built to do one job.
Quiet by design
No counters or badges nagging you from the toolbar. The popup shows your three slots when you look.
Block or redirect
Drop the new tab, or load its link in the tab you came from.
Per-window or global
Count across every window, or give each window its own budget.
Never touches your tabs
Existing tabs are never closed. Only new ones are stopped.
Zero tracking
No analytics, no accounts. Settings stay on your device. The only request is an optional update check.
Every browser
Chrome, Edge, Brave, Opera, Vivaldi and Firefox. One codebase.
Install
Download the latest build directly. Chrome Web Store and Firefox Add-ons listings are on the way.
Chrome · Edge · Brave · Opera
- Unzip the download to a folder
- Open
chrome://extensionsand enable Developer mode - Click Load unpacked and pick the folder
Firefox 121+
- Unzip the download
- Open
about:debugging#/runtime/this-firefox - Click Load Temporary Add-on… and pick
manifest.json
Questions
How do I limit tabs in Chrome?
Install ThreeTabs. It allows 3 open tabs by default and closes any new tab beyond that. Change the limit from 1 to 50 in the settings.
Does it close my existing tabs?
No. Tabs that are already open are never touched. Only new tabs and windows beyond your limit are blocked.
Is it really free? Does it track me?
Free and open source (MIT). No analytics, no ads, no accounts. The only network request is an optional daily version check on GitHub that you can turn off.
Which browsers work?
Chrome, Edge, Brave, Opera, Vivaldi and Firefox 121 or newer.
Can I change the limit?
Yes: any number from 1 to 50, counted across all windows or per window. Blocked links can be dropped or opened in your current tab.
Made by Mohamad Almousli
I build small, sharp tools. See my portfolio and other projects.
Free forever. MIT licensed.
Read it, fork it, improve it. The whole extension is a few hundred lines.
Star on GitHub
Support on Ko-fi