---
title: "Site Blocker — Block Websites, Pomodoro Timer, Privacy & Focus – Chrome extension stats, history and permissions"
description: "132 users, no ratings yet. Version 1.0.1, updated 2026-06-10. Requests 8 permissions."
url: "https://extensiontracker.com/extension/efffhdhckhcibbefbmdgmfkbppblkald"
---

# Site Blocker — Block Websites, Pomodoro Timer, Privacy & Focus

Live in the Chrome Web Store.

- Users: 132
- Rating: no ratings yet
- Last checked: 2026-10-15 01:11 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: +9 (+7.3%)
- Rank by users: #60,383 of 292,131 live extensions
- Rank in Workflow & Planning: #13,138 of 49,293

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Block websites, run Pomodoro, schedule focus. Zero telemetry, unlimited blocklist. Private BlockSite alternative.

- Extension ID: `efffhdhckhcibbefbmdgmfkbppblkald`
- Developer: [Northpine Labs LLC](https://extensiontracker.com/developer/u7decf718051ad1db7a4277c52659a5ac)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2026-06-10
- Last updated: 2026-06-10
- Version: `1.0.1`
- Size: 237 KiB
- Minimum Chrome: 120
- Languages (52): Deutsch, English, Filipino, Indonesia, Kiswahili, Melayu, Nederlands, Tiếng Việt, Türkçe, català, dansk, eesti, español, español (Latinoamérica), français, hrvatski, italiano, latviešu, lietuvių, magyar, norsk, polski, português (Brasil), português (Portugal), română, slovenčina, slovenščina, suomi, svenska, čeština, Ελληνικά, български, русский, српски, українська, עברית, العربية, فارسی, मराठी, हिन्दी, বাংলা, ગુજરાતી, தமிழ், తెలుగు, ಕನ್ನಡ, മലയാളം, ไทย, አማርኛ, 中文（中国）, 中文（台灣）, 日本語, 한국어
- Website: `extkit.dev`
- Chrome Web Store: <https://chromewebstore.google.com/detail/site-blocker-%E2%80%94-block-webs/efffhdhckhcibbefbmdgmfkbppblkald>
- View its code or download CRX: <https://crxpeek.com/extension/efffhdhckhcibbefbmdgmfkbppblkald>
- Search Google for the ID: <https://www.google.com/search?q=%22efffhdhckhcibbefbmdgmfkbppblkald%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-10-15 | 132 | – | – |
| 2026-09-27 | 123 | – | – |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-27.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

**Every website:** it can read and change your data on all the sites you visit.

### Sites

- `<all_urls>`: Every website

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `alarms`: Run tasks on a schedule
- `contextMenus`: Add items to the right-click menu
- `declarativeNetRequest`: Block or change network requests, using rules
- `notifications`: Show notifications
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Save Image as Type — JPG PNG WebP PDF, Resize & Remove Background](https://extensiontracker.com/extension/cgbkfninjjcfllibdoecfdojodhgidbn) | 40,000 | 4.88 | 214 | Tools |
| [Auto-Delete Cookies on Tab Close — Cookie AutoDelete Alternative, Whitelist](https://extensiontracker.com/extension/pfkgmfddjojnoekblkdgpgmehpagjflg) | 2,000 | 4.57 | 7 | Privacy & Security |
| [Get YouTube Tags](https://extensiontracker.com/extension/oghechgciofkpklmdhjoeaafejnmgppa) | 1,000 | 4.44 | 9 | Tools |
| [HEIC to JPG Converter — Batch HEIF, PNG, WebP & iPhone Photos](https://extensiontracker.com/extension/kkhgpacljdiofmhjhhdkdhnflpomnchc) | 933 | 5.00 | 4 | Tools |
| [CookieMate — Cookie Editor, Inspector & Manager, EditThisCookie Alt](https://extensiontracker.com/extension/jdmdgfbbjjdnflajkclafekpcgkaegdi) | 640 | – | – | Developer Tools |
| [AccessCheck — Website Accessibility Checker, WCAG & ADA Audit](https://extensiontracker.com/extension/mbghbhlimdapjmeplbffopfagdikdacm) | 626 | 5.00 | 2 | Tools |
| [RedirectCheck — URL & Website Redirect Checker 301 Chain Trace Status Code](https://extensiontracker.com/extension/pndfafcgnfdkbijjhjngocaocflkmahm) | 465 | 5.00 | 2 | Tools |
| [Readability Checker — Reading Level, Flesch-Kincaid & Writing Score](https://extensiontracker.com/extension/fjpohmmgennglcgfdhjeeconejimcbkk) | 356 | 5.00 | 1 | Tools |
| [QuickSEO — SEO Checker & AI Visibility Audit Tool](https://extensiontracker.com/extension/lnfocejphloipmkjkaijmcgclkhkigof) | 342 | 5.00 | 2 | Tools |
| [Save Articles to Read Later — Pocket Alternative & Reader View Mode](https://extensiontracker.com/extension/loplcbgcfnonfkcibofjlmilndfnoohe) | 311 | 4.50 | 2 | Workflow & Planning |

All 24 extensions by [Northpine Labs LLC](https://extensiontracker.com/developer/u7decf718051ad1db7a4277c52659a5ac).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-10-15 01:11 UTC; next check around 2026-11-13.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Site Blocker — Block Websites, Pomodoro Timer, Privacy & Focus” (efffhdhckhcibbefbmdgmfkbppblkald). Chrome Web Store data, last checked 2026-10-15. https://extensiontracker.com/extension/efffhdhckhcibbefbmdgmfkbppblkald. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_efffhdhckhcibbefbmdgmfkbppblkald,
  title   = {Site Blocker — Block Websites, Pomodoro Timer, Privacy & Focus (efffhdhckhcibbefbmdgmfkbppblkald)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-10-15},
  url     = {https://extensiontracker.com/extension/efffhdhckhcibbefbmdgmfkbppblkald},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/efffhdhckhcibbefbmdgmfkbppblkald>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.