---
title: "SiteBlock – Chrome extension stats, history and permissions"
description: "80,000 users, rated 4.64 by 930 people. Version 0.3.1, updated 2026-03-28. Requests 4 permissions."
url: "https://extensiontracker.com/extension/pfglnpdpgmecffbejlfgpnebopinlclj"
---

# SiteBlock

Live in the Chrome Web Store.

- Users: 80,000
- Rating: 4.64 from 930 ratings
- Last checked: 2026-11-07 20:21 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: No change (+0.0%)
- Rank by users: #1,862 of 292,131 live extensions
- Rank in Workflow & Planning: #625 of 49,294

## The listing

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

Summary from the listing:

> Block sites to discourage procrastination

- Extension ID: `pfglnpdpgmecffbejlfgpnebopinlclj`
- Developer: [Costa](https://extensiontracker.com/developer/ubfdb94b44e97e435c4a0a126de0efb7a)
- 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: 2009-12-15
- Last updated: 2026-03-28
- Version: `0.3.1`
- Size: 12.12 KiB
- Minimum Chrome: 88
- Languages (1): English
- Chrome Web Store: <https://chromewebstore.google.com/detail/siteblock/pfglnpdpgmecffbejlfgpnebopinlclj>
- View its code or download CRX: <https://crxpeek.com/extension/pfglnpdpgmecffbejlfgpnebopinlclj>
- Search Google for the ID: <https://www.google.com/search?q=%22pfglnpdpgmecffbejlfgpnebopinlclj%22&tbs=li:1>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-07 | 80,000 | 4.64 | 930 |
| 2026-10-31 | 80,000 | 4.64 | 930 |
| 2026-10-24 | 80,000 | 4.64 | 930 |
| 2026-10-17 | 80,000 | 4.64 | 930 |
| 2026-10-10 | 80,000 | 4.34 | 930 |
| 2026-10-03 | 80,000 | 4.34 | 930 |
| 2026-09-27 | 80,000 | 4.34 | 929 |

## 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.

### Browser features

- `alarms`: Run tasks on a schedule
- `offscreen`: Open a hidden page for background work
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-11-07 20:21 UTC; next check around 2026-11-14.

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

## Cite this page

Extension Tracker. “SiteBlock” (pfglnpdpgmecffbejlfgpnebopinlclj). Chrome Web Store data, last checked 2026-11-07. https://extensiontracker.com/extension/pfglnpdpgmecffbejlfgpnebopinlclj. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_pfglnpdpgmecffbejlfgpnebopinlclj,
  title   = {SiteBlock (pfglnpdpgmecffbejlfgpnebopinlclj)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-07},
  url     = {https://extensiontracker.com/extension/pfglnpdpgmecffbejlfgpnebopinlclj},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/pfglnpdpgmecffbejlfgpnebopinlclj>. 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`.