# Transpose / Speed / Reverb / Loop - Shifter

> Change pitch and speed, plus 13 audio effects such as reverb, bass boost, punch, chorus, lo-fi, vocal boost, pan, treble and more such as loop A/B - for YouTube, Spotify and Apple Music. (pitch changer) (pitch shifter).

Canonical page: [https://chrome-stats.com/d/transpose-shifter](https://chrome-stats.com/d/transpose-shifter)

## Overview

- **ID:** `transpose-shifter`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** LmExtensions
- **Category:** photos-music-videos
- **Daily users:** 358
- **Weekly downloads:** 78
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 3.8.2
- **Last updated:** 2026-08-06
- **First published:** 2026-06-13
- **Size:** 134 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/transpose-shifter/)

## Description

Full Compatibility with YouTube / Spotify / Apple Music

Partial Compatibility with Amazon Music / SoundCloud

--UPDATES--  

● Users can now type custom values for the sliders. 

● Updated the UI.

● Managed to get the extension fully working on Apple Music again <strong>for now</strong>, this could change in a future Apple Music update. 

--BUG FIXES--

● Fixed an issue that caused A/B loop not to work correctly.

## Rankings

- #6,159 — Overall
- #2 — transpose
- #32 — shift
- #83 — lift
- #85 — speed
- #103 — cause

## Permissions and access

### Permissions

- `activeTab`
- `storage`

### Host permissions

- `*://*.youtube.com/*`
- `*://open.spotify.com/*`
- `*://*.soundcloud.com/*`
- `*://music.apple.com/*`
- `*://*.amazon.com/*`
- `*://*.amazon.co.uk/*`
- `*://*.amazon.de/*`
- `*://*.amazon.fr/*`
- `*://*.amazon.es/*`
- `*://*.amazon.it/*`
- `*://*.amazon.ca/*`
- `*://*.amazon.co.jp/*`
- `*://*.amazon.com.au/*`

### Content script matches

- `*.youtube.com`
- `open.spotify.com`
- `*.soundcloud.com`
- `music.apple.com`
- `*.amazon.com`
- `*.amazon.co.uk`
- `*.amazon.de`
- `*.amazon.fr`
- `*.amazon.es`
- `*.amazon.it`
- `*.amazon.ca`
- `*.amazon.co.jp`
- `*.amazon.com.au`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Request access to the following domains: youtube.com, spotify.com, soundcloud.com, apple.com, amazon.com, co.uk, amazon.de, amazon.fr, amazon.es, amazon.it, amazon.ca, co.jp, com.au
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/transpose-shifter)