# Global Speed - Video Speed Control

> Set a default speed for video and audio.

Canonical page: [https://chrome-stats.com/d/global-speed](https://chrome-stats.com/d/global-speed)

## Overview

- **ID:** `global-speed`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** POLYWOCK
- **Category:** photos-music-videos
- **Daily users:** 56,043
- **Weekly downloads:** 2,352
- **Rating:** 4.73 / 5 (308 ratings)
- **Version:** 3.4.117
- **Last updated:** 2026-08-26
- **First published:** 2020-01-16
- **Size:** 617 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/global-speed/)
- **Website:** [https://github.com/polywock/globalSpeed](https://github.com/polywock/globalSpeed)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/global-speed/privacy/](https://addons.mozilla.org/firefox/addon/global-speed/privacy/)

## Description

Global Speed - Video Speed Control lets you apply a default playback speed for all video and audio across websites you visit, including YouTube, Netflix, Spotify, and podcasts.

Features include keyboard shortcuts for rewinding/forwarding (Z/X), frame-by-frame analysis (Shift+Z/Shift+X), mark-and-jump (Shift+W, W), and optional shortcuts for volume and fullscreen. It also supports drawing on the page, darkening video backgrounds, and applying filters (invert, grayscale, brightness, contrast, mirroring) across videos or the entire page. A powerful URL rule system lets you automatically set speeds or filters per site. Open source on GitHub: https://github.com/polywock/globalSpeed

## Rankings

- #301 — Overall
- #40 — Photos, Music & Videos
- #1 — video speed
- #2 — speed
- #8 — self control
- #11 — control

## Permissions and access

### Permissions

- `storage`
- `webNavigation`
- `scripting`
- `contextMenus`

### Host permissions

- `https://*/*`
- `http://*/*`
- `file://*/*`

### Content script matches

- `*`

## Safety

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

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension was recently updated in the past month. New updates 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).

## Review summary

Users praise Global Speed for its ease of use, broad site compatibility, and strong customization, making high-speed viewing convenient across many sites. The main recurring drawback is reliability on Firefox, including occasional audio/video desync after speed changes and sporadic stability problems. Some users note bugs and would like per-source control or clearer behavior descriptions. Overall, it’s a strong, open-looking option for Firefox speed control, with positive feedback on usability and versatility and caveats about occasional stability and bug-related issues.

### Pros

- Easy to use and intuitive interface with quick speed switching
- Broad compatibility across sites and media; works in many video players
- Highly customizable and lightweight design
- Great for watching videos at higher speeds (1.5x–2.5x), helpful for elearning

### Cons

- Reliability issues on Firefox: intermittent audio-video desynchronization after extended fast playback and occasional instability requiring reinstall

## Similar extensions and apps

- [Playback Speed Controller](https://chrome-stats.com/d/psc-playback-speed-controller) — 7 users
- [MarkN Video Speed](https://chrome-stats.com/d/markn-video-speed) — 1 users
- [Video Speed Controller](https://chrome-stats.com/d/video-speed-manager) — 86 users
- [Video Controls Plus: Speed Control for YouTube ...](https://chrome-stats.com/d/video-controls-plus) — 71 users, 5.00 / 5
- [Video Speed Control Plus](https://chrome-stats.com/d/video-speed-control-plus) — 1 users
- [Global Speed Video Controler](https://chrome-stats.com/d/global-speed-video-controler) — 207 users, 5.00 / 5
- [Simple Video Speed Controller](https://chrome-stats.com/d/simple-video-speed-controller) — 136 users
- [Video Speed control play](https://chrome-stats.com/d/video-speed-control-play)
- [YouTube speed android](https://chrome-stats.com/d/youtube-speed-android) — 326 users, 5.00 / 5
- [StreamSpeed](https://chrome-stats.com/d/streamspeed) — 63 users, 4.00 / 5
- [Playback Speed Extension](https://chrome-stats.com/d/playback-speed-extension) — 24 users
- [0.05 + - video speed controller](https://chrome-stats.com/d/0-05-video-speed-controller)

---

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