YouTube Auto WPM Speed

Name: YouTube Auto WPM Speed
Author: Nikita Denissov

Automatically adjusts YouTube video speed based on the speaker's Words Per Minute (WPM) from subtitles. Watch content at your perfect pace without manual adjustments, saving time and improving focus.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-30

Version:

1.0.0

Last updated: 2026-05-19

Features & Capabilities

YouTube Auto WPM Speed intelligently manages playback for you, creating a seamless and comfortable viewing experience.

This extension analyzes the subtitles of a video in real-time to calculate the speaker's Words Per Minute (WPM). It then automatically adjusts the video speed to match your personally set target WPM.

Benefits & Features:

True Automatic Control: Forget manual speed changes. The extension does all the work, speeding up low parts and maintaining a steady pace during fast-paced dialogue.
Fully Customizable: Set your ideal target WPM, maximum/minimum speeds, and even the calculation window (from per-phrase accuracy to overall video speed) through a clean popup menu.
Smart & Unobtrusive:
- Automatically fetches subtitles in the background without you needing to enable them.
- Detects videos without subtitles and gracefully switches to a configurable manual mode.
- Caches subtitles to work instantly on page reload.
Manual Override & Hotkeys: Instantly take control with your mouse wheel over the on-screen widget or use fully configurable hotkeys to switch modes and adjust speeds on the fly.
Minimalist UI: A sleek, unobtrusive overlay in the top-left corner shows the current WPM and speed, with a pleasant color gradient to indicate the pace, designed to blend in perfectly with the YouTube interface.

Full Keyboard Control (Hotkeys)

Take command without leaving the video player. All hotkeys are fully customizable in your browser's extension settings (about:addons).

Alt + A: Instantly toggle between Auto (WPM) and Manual speed mode.
Alt + Up / Down: Adjust the Max/Manual Speed limit by 0.2x.
Alt + . / ,: Fine-tune your Target WPM by 10.
Alt + G: Switch between per-window calculation and Global Mode (one speed for the entire video).

Whether you're learning from tutorials, watching lectures, or catching up on vlogs, Auto WPM Speed helps you absorb information more efficiently by eliminating distracting speed adjustments.

User Growth & Download Statistics

Add-on

By:

Nikita Denissov

Daily users:

Version:

1.0.0 Last updated: 2026-05-19

Version code:

6264089

Creation date:

2026-05-16

Risk:

Permissions:

Host permissions:

*://*.youtube.com/*
*://*.googlevideo.com/*

Content scripts matches:

*.youtube.com

Size:

45.25KB

Email:

n.*****@proton.me

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-30

Compare stats and ranking:

Ranking

# 103,130 ▲ 660

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:

Nikita Denissov

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/youtube-auto-wpm-speed/

Email:

n.*****@proton.me

Website:

https://git.dep.ovh/n.denissov/video-auto-wpm-speed

Is YouTube Auto WPM Speed 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.

YouTube Auto WPM Speed requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: youtube.com, googlevideo.com
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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.

YouTube Auto WPM Speed 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 **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****