PitchShifter

Name: PitchShifter
Rating: 5 (1 reviews)
Author: rive

Change the pitch of any video or audio in real time without changing the speed - and change the speed without changing the pitch. Works everywhere, including YouTube. No account, no setup, no data collected. Just click and play.

Download

Install

Features & Capabilities

PitchShifter changes the musical pitch of any video or audio playing in your browser, in real time, without changing the speed. It can also change the speed without changing the pitch. Handy for musicians transposing a song, learners slowing speech down, or anyone who wants audio in a different key.

Private by design

No account, no sign-in, no tracking, no ads.
Collects no data. Everything runs locally; nothing is ever sent anywhere.
Your settings are saved only on your own device.

Plug and play

Click the toolbar icon and move a slider. That's it, no setup!
Works on any page with audio or video, including YouTube and sites with strict security policies.
At a neutral setting it gets out of the way completely, with zero added latency.

Controls

Pitch: -12 to +12 semitones.
Microtones: fine tuning between semitones.
Speed: 25% to 200%, keeping the pitch intact.

Built on the SoundTouch time-domain engine for clean, natural-sounding shifts.

If you like this project and wish to support me, please consider buying me a coffee! https://ko-fi.com/daffwt221

User Growth & Download Statistics

Add-on

By:

rive

Daily users:

64 19

Rating:

5.00

(1)

Version:

1.0.0 Last updated: 2026-06-10

Version code:

6296328

Creation date:

2026-06-07

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

74.45KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-14

Compare stats and ranking:

Ranking

# 13,794 ▲ 2,382

Other rankings

#3 in pitch shift keyword 34 #26 in shift keyword 23 ▲ 1#39 in setup keyword 31 ▲ 2#41 in pitch keyword 39 ▲ 22#77 in lift keyword 2 ▲ 14

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:

rive

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/pitchshifter/

User Reviews

A must-have for any musician that uses Firefox. Makes my life so much easier.

by Ro*****, 2026-07-05

View all user reviews ›

Is PitchShifter 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.

PitchShifter requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

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.

PitchShifter is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

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