YouTube Rapper Toolkit

Name: YouTube Rapper Toolkit
Author: Adam

Plain JavaScript extension — no build tools, no minifiers, no webpack. All source is readable as-is. The extension has 3 features: Beat Looper — loop any section of a YouTube video MP3 Download — requires Sort Watch Later

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-08-18

Version:

1.4.0

Last updated: 2026-02-22

Features & Capabilities

Built for rappers and singers who write over YouTube beats. Click download, and it saves the MP3 with the key, BPM, song name, and producer name — all in the filename. No more switching tabs to TuneBat, no more copying and pasting info. Everything you need is right there on YouTube.

How Key & BPM works: The extension reads the key and BPM from the video description and title — where producers put it. It's not a key finder. That said, 99% of good beats on YouTube have the key and BPM listed by the producer. The extension finds it, shows it as an orange badge, and includes it in the filename when you download.

Sort by Recently Added — One-click sort on your Watch Later playlist. Stop scrolling through old beats to find the ones you just saved.

Beat Looper — Loop any section of a beat while you write. Set start/end points with the slider or keyboard shortcuts (L = toggle loop, [ = set start, ] = set end). Your loop saves per video for 7 days, so you can come back and pick up where you left off.

MP3 Download — One-click download as MP3. Filename format: Title - Key BPM - Producer.mp3 — so when you buy the beat for licensing later, everything is organized. Requires a small free local server (2-minute setup, see GitHub).

GitHub: https://github.com/adamsfunded-ai/youtube-rapper-toolkit

User Growth & Download Statistics

Add-on

By:

Adam

Daily users:

Version:

1.4.0 Last updated: 2026-02-22

Version code:

6155104

Creation date:

2026-02-19

Risk:

Permissions:

http://127.0.0.1:3456/*
downloads

Content scripts matches:

www.youtube.com

Size:

23.83KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-08-18

Compare stats and ranking:

Ranking

# 47,685 ▼ 140

Other rankings

#244 in mp3 keyword 28 ▼ 1

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Adam

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/youtube-rapper-toolkit/

Is YouTube Rapper Toolkit Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

YouTube Rapper Toolkit requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: 0.1, youtube.com
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

YouTube Rapper Toolkit is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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