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Focus Lock — Free & Simple Site Blocker

Chrome extension by w3technic.ext · Productivity · Tools

A Chrome extension in Productivity · Tools with 13 users, barely installed.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 3 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
13
Rating
4.0 (1 ratings)
Users, last 19 days
+4
Rating, last 30 days
Not watched long enough to say
Version
1.0.1
Updated in the store
2026-03-30
Published
2026-03-28
Manifest
V3
Browser access
7 permissions, 1 site pattern

How it has moved

Users
+4 since 31.08
8-13 · 10 readings
  1. 2026-08-319
  2. 2026-09-0211
  3. 2026-09-058
  4. 2026-09-069
  5. 2026-09-078
  6. 2026-09-089
  7. 2026-09-108
  8. 2026-09-1510
  9. 2026-09-1713
  10. 2026-09-1813
Rating
unchanged since 31.08
reviewsrating 4.00 · 10 readings
  1. 2026-08-31reviews1rating4.00
  2. 2026-09-02reviews1rating4.00
  3. 2026-09-05reviews1rating4.00
  4. 2026-09-06reviews1rating4.00
  5. 2026-09-07reviews1rating4.00
  6. 2026-09-08reviews1rating4.00
  7. 2026-09-10reviews1rating4.00
  8. 2026-09-15reviews1rating4.00
  9. 2026-09-17reviews1rating4.00
  10. 2026-09-18reviews1rating4.00
Users
+4 since 31.08
8-13 · 10 readings
  1. 2026-08-319
  2. 2026-09-0211
  3. 2026-09-058
  4. 2026-09-069
  5. 2026-09-078
  6. 2026-09-089
  7. 2026-09-108
  8. 2026-09-1510
  9. 2026-09-1713
  10. 2026-09-1813
Rating
unchanged since 31.08
reviewsrating 4.00 · 10 readings
  1. 2026-08-31reviews1rating4.00
  2. 2026-09-02reviews1rating4.00
  3. 2026-09-05reviews1rating4.00
  4. 2026-09-06reviews1rating4.00
  5. 2026-09-07reviews1rating4.00
  6. 2026-09-08reviews1rating4.00
  7. 2026-09-10reviews1rating4.00
  8. 2026-09-15reviews1rating4.00
  9. 2026-09-17reviews1rating4.00
  10. 2026-09-18reviews1rating4.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

  • See the address and title of every tab you have open tabs
  • Block or redirect requests by rules it declares in advance declarativeNetRequest
  • See which of its blocking rules matched declarativeNetRequestFeedback
Show the remaining 4
  • Act on the current tab, but only after you click it activeTab
  • Schedule work to run later alarms
  • Show you notifications notifications
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

w3technic.ext publishes 20 listings we track, 4k users between them.

  1. Simple Allow Copy w3technic.ext · Productivity · Tools · published 2026-03-25 3k users ★ 5.0
  2. Dark Mode - Free & Fast Auto Dark Theme w3technic.ext · Make Chrome Yours · Accessibility · published 2026-03-27 192 users ★ 5.0
  3. Tab Hibernator - Free & Fast Memory Saver w3technic.ext · Productivity · Tools · published 2026-04-01 127 users
Show 5 more from this publisher
  1. 2048 Game w3technic.ext · Lifestyle · Fun · published 2023-06-26 81 users ★ 5.0
  2. Save Image As Type (Safe) w3technic.ext · Productivity · Tools · published 2026-03-31 54 users ★ 5.0
  3. Tab Namer — Free & Simple Custom Tab Labels w3technic.ext · Productivity · Tools · published 2026-03-26 51 users
  4. Clean Link Free — Fast UTM & Tracker Remover w3technic.ext · Productivity · Tools · published 2026-04-01 37 users ★ 5.0
  5. Highlight & Sync — Free, Fast Text Saver w3technic.ext · Productivity · Tools · published 2026-04-06 31 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. Website Blocker Describes nearly the same job, smaller audience 7 users
  2. Focus Mode - Site Blocker Describes nearly the same job, smaller audience 6 users
  3. ShinyTimer website blocker Describes nearly the same job, smaller audience 8 users
  4. FocusShield - Productivity & Distraction Blocker Describes nearly the same job, smaller audience 3 users (last published figure)
  5. Site Blocker Describes nearly the same job, smaller audience 4 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.