Read the documentation: [https://developer.chrome.com/docs/extensions/](https://developer.chrome.com/docs/extensions/)
3
Create a developer account.
4
Create a project directory.
Find the source code example here: [https://github.com/GoogleChrome/chrome-extensions-samples/tree/main/tutorials/hello-world](https://github.com/GoogleChrome/chrome-extensions-samples/tree/main/tutorials/hello-world)
5
Create a manifest file.
6
Load your unpacked extension into Chrome.
7
Create a user interface.
8
Create a background script.
9
Add content scripts.
10
Package the extension.
Tip: The manifest file must specify at least "name":, "version":, "icons": and "description":.
Tip: Set the initial version number in the manifest to a low value, such as 0.0.0.1. That way, you have room to increase the version number when you upload new versions of your item.