---
title: "Rubi – Vocaloid & Vocal Synth Lyrics, Karaoke for YouTube – Chrome extension stats, history and permissions"
description: "2 users, no ratings yet. Version 1.5.4, updated 2026-11-09. Requests 9 permissions."
url: "https://extensiontracker.com/extension/bfffpncabkcmijdbknopjomlnlbdokog"
---

# Rubi – Vocaloid & Vocal Synth Lyrics, Karaoke for YouTube

Live in the Chrome Web Store.

- Users: 2
- Rating: no ratings yet
- Last checked: 2026-11-10 05:33 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #250,052 of 292,125 live extensions
- Rank in Entertainment: #6,225 of 7,172

## The listing

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

Summary from the listing:

> Vocaloid, UTAU & Synthesizer V lyrics on YouTube: Japanese, romaji, English, synced karaoke-style. Sync any song, share to LRCLIB.

- Extension ID: `bfffpncabkcmijdbknopjomlnlbdokog`
- Developer: [KaikiMAX](https://extensiontracker.com/developer/u9f64fa11475629747e22138ff30aca48)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Lifestyle › Entertainment](https://extensiontracker.com/category/lifestyle/entertainment)
- First published: 2026-11-08
- Last updated: 2026-11-09
- Version: `1.5.4`
- Size: 154 KiB
- Minimum Chrome: 88
- Languages (5): English, 中文（中国）, 中文（台灣）, 日本語, 한국어
- Website: `https://rubi-lyrics.vercel.app/`
- Chrome Web Store: <https://chromewebstore.google.com/detail/rubi-%E2%80%93-vocaloid-vocal-syn/bfffpncabkcmijdbknopjomlnlbdokog>
- View its code or download CRX: <https://crxpeek.com/extension/bfffpncabkcmijdbknopjomlnlbdokog>
- Search Google for the ID: <https://www.google.com/search?q=%22bfffpncabkcmijdbknopjomlnlbdokog%22&tbs=li:1>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-10 | 2 | – | – |
| 2026-11-09 | – | – | – |

## What changed

Every change found on a check, newest first.

- 2026-11-13: Now trusted by Enhanced Safe Browsing.
- 2026-11-10: New version `1.5.4`, replacing `1.4.0`.
- 2026-11-10: Renamed from “Rubi” to “Rubi – Vocaloid & Vocal Synth Lyrics, Karaoke for YouTube”.
- 2026-11-10: The summary on the listing changed.
- 2026-11-10: Now listed in 5 languages, from 1.

## 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 2026-11-09.

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.

### Sites

- `https://genius.com/*`: genius.com
- `https://lrclib.net/*`: lrclib.net
- `https://music.youtube.com/*`: music.youtube.com
- `https://vocadb.net/*`: vocadb.net
- `https://vocaloidlyrics.miraheze.org/*`: vocaloidlyrics.miraheze.org
- `https://www.youtube.com/*`: www.youtube.com

### Sites where it runs scripts

- `https://music.youtube.com/*`: music.youtube.com
- `https://www.youtube.com/*`: www.youtube.com

### Browser features

- `alarms`: Run tasks on a schedule
- `storage`: Save settings and data in your browser
- `unlimitedStorage`: Store more data than the usual limit

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Skipurr: Video Rewind, Fast-Forward & Pause](https://extensiontracker.com/extension/ghdgdlcndnckaifbminohkohgahahgoa) | 778 | 4.20 | 10 | Entertainment |
| [Fullscreen Video Zoom](https://extensiontracker.com/extension/maihedhmlmpjkbadjhmjfpadchdmpjca) | 42 | 5.00 | 1 | Tools |
| [Instagram JustWatched](https://extensiontracker.com/extension/jceiejjgbjmhepdkeekckpkmenmndecl) | 22 | 5.00 | 1 | Communication |

All 4 extensions by [KaikiMAX](https://extensiontracker.com/developer/u9f64fa11475629747e22138ff30aca48).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked again 7 and 30 days after it was published, and again whenever a new version appears. Last checked 2026-11-10 05:33 UTC; next check around 2026-11-15.

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

## Cite this page

Extension Tracker. “Rubi – Vocaloid & Vocal Synth Lyrics, Karaoke for YouTube” (bfffpncabkcmijdbknopjomlnlbdokog). Chrome Web Store data, last checked 2026-11-10. https://extensiontracker.com/extension/bfffpncabkcmijdbknopjomlnlbdokog. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_bfffpncabkcmijdbknopjomlnlbdokog,
  title   = {Rubi – Vocaloid & Vocal Synth Lyrics, Karaoke for YouTube (bfffpncabkcmijdbknopjomlnlbdokog)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-10},
  url     = {https://extensiontracker.com/extension/bfffpncabkcmijdbknopjomlnlbdokog},
  urldate = {2026-11-13}
}
```

---

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