Build a Chrome & Opera Extension

Create a folder.
Create a file “manifest.json” inside the directory.

{  "name": "My Extension",  "version": "1.0",  "manifest_version": 2,  "description": "This is an example extension.",  "browser_action": {  "default_icon" : "icon.png",  "default_popup" : "window.html"}}

The file must be UTF-8 encoded.
It can work both on Google Chrome and Opera browsers.

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