Rewind lectures, fast‑forward trailers, and pitch‑shift podcasts on any page that uses an HTML5 player. Works on YouTube, Netflix, Spotify, Bilibili, Coursera, most cloud‑drive previews, and a long tail of news and learning sites. Open source, MIT licensed, no telemetry.
Speed panel — one‑click selection from 0.25x to 16x
No bloat, no side‑quests. The extension focuses on speed, hotkeys, and audio/video tweaks, and lets you script every one of them with URL rules and keyboard bindings.
Pick a speed once and forget about it. Every HTML5 video and audio on every page picks it up.
Bind every action to a key. Faster, slower, frame back, frame forward, rewind, fast‑forward, volume up, volume down, mute, power toggle — all configurable.
Brighten a dark Netflix title, boost a quiet interview, or pitch‑shift a podcast. All built into the same popup — no second extension needed.
The speed panel is for picking a rate. The three‑dot menu is for everything else: showing the circle widget, granting hotkey access to a domain, and switching strategy modes.
If you can reach the Chrome, Edge, or Firefox store, a one‑click install is the cleanest path. If your network cannot, grab the build from GitHub Releases and load it unpacked.
From the Chrome Web Store, the Edge add‑ons site, Firefox AMO, or the GitHub Releases zip.
For the GitHub zip, extract with 7‑Zip, WinRAR, or unzip to a stable folder.
Go to chrome://extensions (Edge: edge://extensions), enable Developer mode.
Click “Load unpacked”, pick the folder containing manifest.json. The toolbar icon shows up immediately.
.crx file to install. If you downloaded from a mirror that ships a single .crx, rename it to .zip and extract it first, then load the folder unpacked. Do not delete the source folder afterwards.
The extension talks to the native HTML5 <video> and <audio> elements. Any page that uses them is fair game. The list below is a sample, not a contract.
The recommended route is the official browser store. The Baidu Netdisk mirror below is provided for visitors in mainland China who need a faster link. The package on Baidu Netdisk is the same build as the GitHub Release.
Faster download for users in mainland China. Extraction code r9ne.
Ordered roughly by the user journey: what it is, how to install, how to fix common issues. If something is missing here, the GitHub issue tracker is the next stop.
Global Speed is an open‑source browser extension that rewinds, fast‑forwards, and pitch‑shifts any HTML5 video or audio on a web page. It supports 0.25x to 16x, boosts volume up to 600%, and exposes URL rules, custom hotkeys, and basic image filters. Source code lives on GitHub under polywock.
Compared to Video Speed Controller and similar tools, the main additions are URL rules, global hotkeys, and the audio/visual panel.
Yes, it is free. No ads, no analytics, no bundled SDKs. The extension is MIT licensed and fully auditable on GitHub.
The only network request the extension makes is an optional version check, which you can disable in settings. There is no telemetry, no browsing history collection, and no account.
Officially: Chrome 88+, Microsoft Edge 88+, Firefox 78+. Any Chromium‑based browser (Brave, Vivaldi, Opera, Edge Canary, Kiwi on Android) can load the unpacked build.
iOS Safari does not support third‑party extensions. On Android, browsers like Kiwi and Yandex support unpacked extensions, although global hotkeys may be limited.
It works on every page that uses the native HTML5 video/audio element. Confirmed examples include YouTube, Netflix, Spotify Web, Bilibili, Vimeo, Twitch, Coursera, edX, Khan Academy, Apple Podcasts (web), Pocket Casts (web), Google Drive previews, Baidu Netdisk previews, and Aliyun Drive previews.
DRM‑protected streams (some Netflix titles, some encrypted cloud‑drive lectures) and cross‑origin embed iframes cannot be controlled — those sites override playbackRate for security reasons.
Common reasons: 1) the page uses a non‑H5 player (Flash, a custom MSE/EME handler, or a cross‑origin iframe); 2) the site ships its own speed control and blocks playbackRate overrides; 3) the extension is paused on that domain — open the popup and remove the site from the blacklist; 4) you have to grant the site permission via the page prompt the first time, then reload.
Switching the strategy dropdown in the popup to “Generic” also helps on some sites.
It is in the store under the id jpbjcnkcffbooppibceonlgknpkniiff. Direct link: chrome web store. If you cannot reach the store from your region, the GitHub Releases page ships the same build as a zip you can load unpacked.
Up to 600% of the original volume, controlled from the speaker icon in the popup. The boost is applied via the Web Audio API, so it also works on encrypted audio streams like Spotify Web.
Yes. Open the popup, click the gear icon, then Hotkeys. You can rebind every action: faster, slower, reset to 1.0x, frame back, frame forward, rewind, fast‑forward, volume up/down, mute, toggle power.
Enabling “Allow global shortcuts” lets you keep controlling a background video or a PiP window while using another app such as PowerPoint or a PDF reader.
No. The extension only writes to the playbackRate, volume, brightness, and contrast properties of the local media element. It does not modify the page DOM, does not call the site backend, and does not touch cookies. Logins, paid membership, and watermarks are left alone.
No. Settings live in chrome.storage / browser.storage. Store installs update automatically. Manual installs need you to drop a new build over the old folder. URL rules, hotkeys, and saved speeds all carry over.
VSC focuses on the manual hotkey workflow. Global Speed adds URL rules (auto‑apply a speed to specific sites), global hotkeys, a volume panel, brightness and contrast filters, and pitch shift. If you only need a slider plus a couple of keys, VSC is plenty. If you want a single extension that covers speed, audio, and visual tweaks, Global Speed is the more complete option.
No. globa.club is an unofficial reference site maintained for download convenience and documentation. The only authoritative sources for releases are the GitHub repository and the official browser extension stores (Chrome, Edge, Firefox). Use this site for documentation and convenience; rely on GitHub for the source of truth.