Blocks distracting websites while Umbra focus protection is active.
Users
68
+50 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
3
0 in 30 days
Store rank
#96K
#80K among extensions
Version
1.0.5
updated 11 Sep 2026
Users
monthly, 2 months
Latest, 15 Oct 2026:68 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 15 Oct 2026:3 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Umbra Blocker
Umbra Blocker is the browser companion for the Umbra focus application on Windows.
During an active focus session, the extension blocks websites selected in your Umbra blocklist and redirects them to a simple local blocked page. It also reports blocked attempts to the Umbra desktop application so you can review your distraction statistics.
The extension requires the Umbra Windows application and communicates only with the local Umbra native messaging host. Browsing information is not sent to an Umbra server, sold, or shared with third parties.
Download Umbra for Windows:
https://github.com/huosh1/umbra/releases/latest
