---
title: "Key Detector – Musical Key & BPM Finder – Chrome extension stats, history and permissions"
description: "3,000 users, rated 4.27 by 11 people. Version 1.6.8.6, updated 2026-09-16. Requests 8 permissions."
url: "https://extensiontracker.com/extension/plpajfojpafmamfkdajpllmmmldlnleo"
---

# Key Detector – Musical Key & BPM Finder

Live in the Chrome Web Store.

- Users: 3,000
- Rating: 4.27 from 11 ratings
- Last checked: 2026-09-27 07:40 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #12,549 of 264,703 live extensions
- Rank in Tools: #3,026 of 103,498

## The listing

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

Summary from the listing:

> Find musical key and BPM, practice with an interactive piano, and transpose YouTube with Pro. Analyze audio on your device.

- Extension ID: `plpajfojpafmamfkdajpllmmmldlnleo`
- Developer: [zambrahhhh](https://extensiontracker.com/developer/u8e9deb09d9fa42cecdb2defb7ac474d7)
- Category: [Productivity › Tools](https://extensiontracker.com/category/productivity/tools)
- First published: 2026-03-08
- Last updated: 2026-09-16
- Version: `1.6.8.6`
- Size: 410 KiB
- Minimum Chrome: 116
- Languages (3): English, español, português (Brasil)
- Website: `keydetector.site`
- Support page: `https://buymeacoffee.com/zambrahhhh`
- Chrome Web Store: <https://chromewebstore.google.com/detail/key-detector-%E2%80%93-musical-ke/plpajfojpafmamfkdajpllmmmldlnleo>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fplpajfojpafmamfkdajpllmmmldlnleo>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 3,000 | 4.27 | 11 |

## 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.

### Sites

- `*://*.youtu.be/*`: youtu.be and its subdomains
- `*://*.youtube.com/*`: youtube.com and its subdomains
- `https://extensionpay.com/*`: extensionpay.com

### Sites where it runs scripts

- `*://*.youtu.be/*`: youtu.be and its subdomains
- `*://*.youtube.com/*`: youtube.com and its subdomains
- `https://extensionpay.com/*`: extensionpay.com

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `scripting`: Run scripts on sites it can reach
- `sidePanel`: Show a side panel
- `storage`: Save settings and data in your browser
- `tabCapture`: Capture video and sound from 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 2026-09-27 07:40 UTC; next check around 2026-10-03.

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

## Cite this page

Extension Tracker. “Key Detector – Musical Key & BPM Finder” (plpajfojpafmamfkdajpllmmmldlnleo). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/plpajfojpafmamfkdajpllmmmldlnleo. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_plpajfojpafmamfkdajpllmmmldlnleo,
  title   = {Key Detector – Musical Key & BPM Finder (plpajfojpafmamfkdajpllmmmldlnleo)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/plpajfojpafmamfkdajpllmmmldlnleo},
  urldate = {2026-09-28}
}
```

---

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