A browser extension that lets you save links and YouTube videos to KnowledgeOS directly from your browser — in a single click.
Basic usage — save any webpage
YouTube — add a video from the main page (three-dot menu)
YouTube — add a video from the watch page
- Save any page — open the popup and send the current tab's URL straight to your KnowledgeOS inbox
- YouTube integration — adds a native-looking "Add to KnowledgeOS" button to every video's context menu on YouTube
- Auth & server settings — configure your self-hosted or cloud KnowledgeOS API URL and log in with your credentials directly from the popup
- Lightweight — built with Plasmo, React 18 and Tailwind CSS; no unnecessary permissions
Pre-built extension packages are available in the Releases section.
| Browser | Build | Notes |
|---|---|---|
| Mozilla Firefox | .xpi (signed) |
Install directly — no extra steps required |
| Google Chrome | .zip (unsigned) |
Must be loaded as an unpacked extension (Developer Mode) |
- Download the latest
knowledgeosextension-v0.0.x-chrome.zipfrom Releases and unzip it - Open
chrome://extensions/ - Enable Developer mode (top-right toggle)
- Click Load unpacked and select the unzipped folder
This extension is a companion to the KnowledgeOS application.
You need a running KnowledgeOS instance to use it.
- Plasmo — browser extension framework
- React 18
- Tailwind CSS
- Lucide React — icons
- TypeScript
MIT