Etude Looper — transpose & slow down YouTube

Name: Etude Looper — transpose & slow down YouTube
Author: https://onurcelep.github.io/

https://onurcelep.github.io/ · Tools

Open in Chrome Web Store Website

Users

Avg rating

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Ratings

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Updated

Aug 10, 2026

Media

5 items

Description

Change any YouTube video's key and slow it down without changing pitch, then loop the hard parts. Private and offline. 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: https://etude.fyi/looper/

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
44
Description length
Characters in the listing description.
603
Media assets
Screenshots and videos on the listing.
5
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
Yes
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
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Keyword in description
Case-insensitive substring match in the description.
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Keyword occurrences in description
Count of case-insensitive occurrences in the description.
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Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
47.7

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.