# Etude · Looper - transpose, slow down, loop

> Practice with online video: change the key, slow down without changing pitch, and loop sections. Audio is processed locally in your browser.

Canonical page: [https://chrome-stats.com/d/etude-looper](https://chrome-stats.com/d/etude-looper)

## Overview

- **ID:** `etude-looper`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Onur Celep
- **Category:** photos-music-videos
- **Daily users:** 10
- **Weekly downloads:** 1
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 0.2.0
- **Last updated:** 2026-08-07
- **First published:** 2026-07-06
- **Size:** 121 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/etude-looper/)
- **Website:** [https://etude.fyi](https://etude.fyi/)

## Description

Etude adds a musician's practice controls to online video.

Transpose to any key and fine-tune pitch in cents.
Slow down (or speed up) while keeping the pitch, so you can drill a fast passage.
Loop an A-B section and save named loops per video.
Audio is processed locally in your browser. No accounts, no tracking, nothing is uploaded. Works on YouTube and other standard HTML5 video.

Open your own local files instead? Use the Etude Looper web app: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/1d695d9a774e28412c3054b57b95ea46eed185377f1d8316a703714d617fa014/https%3A//etude.fyi" rel="nofollow">https://etude.fyi</a>

## Rankings

- #33,175 — Overall
- #7 — transpose
- #16 — slow
- #219 — process

## Permissions and access

### Permissions

- `storage`

### Host permissions

- `*://*.youtube.com/*`

### Content script matches

- `*.youtube.com`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Request access to the following domains: youtube.com
- 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).

## Similar extensions and apps

- [Étude — Loop & Slow Down YouTube for Practice](https://chrome-stats.com/d/etude)
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- [FiveLoop](https://chrome-stats.com/d/fiveloop) — 541 users, 3.80 / 5
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- [YouTube Loop Repeater: Music Practice Tool](https://chrome-stats.com/d/youtube-loop-repeater) — 61 users, 5.00 / 5
- [LoopYourTube for musicians Loop Youtube videos](https://chrome-stats.com/d/loopyourtube-for-musicians) — 107 users, 5.00 / 5
- [LoopIt - A-B Video Looper](https://chrome-stats.com/d/loopit) — 19 users
- [TuneShift](https://chrome-stats.com/d/tuneshift) — 6 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/etude-looper)