---
title: "Website SEO Checker – Chrome extension stats, history and permissions"
description: "100,000 users, rated 4.56 by 220 people. Version 4.4.1, updated 2026-03-20. Requests 3 permissions."
url: "https://extensiontracker.com/extension/nljcdkjpjnhlilgepggmmagnmebhadnk"
---

# Website SEO Checker

Live in the Chrome Web Store.

- Users: 100,000
- Rating: 4.56 from 220 ratings
- Last checked: 2026-09-27 06:23 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #1,082 of 264,253 live extensions
- Rank in Developer Tools: #97 of 27,566

## The listing

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

Summary from the listing:

> Get free on-page SEO report by 100+ parameters with the best website SEO checker

- Extension ID: `nljcdkjpjnhlilgepggmmagnmebhadnk`
- Developer: [Boosta](https://extensiontracker.com/developer/ub57508aa1e85a3a2b702662a8ac35598)
- Trader status: Declared a trader under EU law
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2017-11-22
- Last updated: 2026-03-20
- Version: `4.4.1`
- Size: 738 KiB
- Minimum Chrome: 88
- Languages (10): Deutsch, English, Nederlands, español, français, italiano, norsk, português (Brasil), svenska, русский
- Website: `https://sitechecker.pro/`
- Support page: `https://help.sitechecker.pro`
- Chrome Web Store: <https://chromewebstore.google.com/detail/website-seo-checker/nljcdkjpjnhlilgepggmmagnmebhadnk>
- Download the CRX, from Google: <https://clients2.google.com/service/update2/crx?response=redirect&prodversion=140.0&acceptformat=crx2,crx3&x=id%3Dnljcdkjpjnhlilgepggmmagnmebhadnk%26uc>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 100,000 | 4.56 | 220 |

## What changed

Every change found on a check, newest first.

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

## 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 where it runs scripts

- `<all_urls>`: Every website

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `identity`: Sign you in with your Google account
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [SEO Content Checker: Plagiarism & Readability](https://extensiontracker.com/extension/jhngfghbfdjfdfejdjlgpmaeeegckldm) | 9,000 | 3.36 | 11 | Developer Tools |

All 2 extensions by [Boosta](https://extensiontracker.com/developer/ub57508aa1e85a3a2b702662a8ac35598).

## 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 2026-09-27 06:23 UTC; next check around 2026-10-02.

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

## Cite this page

Extension Tracker. “Website SEO Checker” (nljcdkjpjnhlilgepggmmagnmebhadnk). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/nljcdkjpjnhlilgepggmmagnmebhadnk. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_nljcdkjpjnhlilgepggmmagnmebhadnk,
  title   = {Website SEO Checker (nljcdkjpjnhlilgepggmmagnmebhadnk)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/nljcdkjpjnhlilgepggmmagnmebhadnk},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/nljcdkjpjnhlilgepggmmagnmebhadnk>. 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. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.