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A Micropub browser extension
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For general usage information, see


After cloning the repository, run npm install to install dependencies.

  • npm run build: build into the /dist directory.
  • npm start: build and automatically watch for changes and rebuild.
  • npm test: run tests. npm test -- --watch will watch for changes and re-run tests every time. If you have issues, make sure you are using node 8.x (the LTS version).

Installing from the repository

To install in Chrome from the repository:

  1. Navigate to chrome://extensions/
  2. Check the “Developer mode” box
  3. Click “Load unpacked extension” and select the /dist directory of the repository

To install in Firefox from the repository:

  1. Navigate to about:debugging
  2. Click “Load Temporary Add-On”
  3. Navigate to the /dist directory and select the manifest.json file

Theoretically, this should work in MS Edge, too, but I don’t run Windows so I haven’t tested that out.


Omnibear is run by three scripts:

  • src/background.js — Runs in a background page. This keeps track of which tab currently has the user's focus and handles communication between the page script and omnibear popup script.
  • src/page.js — A content script that runs in all pages (tabs). This highlights selected entries when the user right-clicks them. It alerts the background script whenever its tab receives user focus. And it watches for when the browser navigates to the authentication successful page on
  • src/index.js — The main script of the popup page. This is a small webapp built using Preact and MobX that includes the posting form and settings screen.

Authentication details, user settings, and the note draft are stored in Omnibear’s localStorage.

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