Build and distribute a Chrome extension

We want to build browser extensions that interact with code at runtime.

How to write the manifest and add files

See, for example, Get started from Chrome for Developers

How to test a Chrome extension locally

• Open a new tab with the URL chrome://extensions/
• Verify Developer mode is on (top right)
• Click on the Load unpacked button (top left)
• Select the folder where you are developing your extension
• Click on the Extensions icon in Chrome (the jigsaw piece)
• Select (and optionally pin) your extension

How to validate a draft extension

NB In order to publish an extension, you must have a developer account.

• Create a zip file of your extension (manifest.json, contentScript.js, etc.)
• Navigate to https://chrome.google.com/webstore/devconsole
• Click on the + New Item button (top right)
• Add your zip file
• Be sure to check regularly that your saved draft can be submitted for review

How to publish an extension

As part of the submission process, you will need to explain why you need the permissions you requested (in the manifest.json)