Examine source code of Clipper

{
  "name": "Clipper",
  "short_name": "Clipper",
  "version": "1.3.9",
  "manifest_version": 3,
  "homepage_url": "https://theclipping.co",
  "description": "Easy click to copy & pase text clips from extension, dedicated 'Email' button. Create notes, bookmarks, email templates, etc.",
  "action": {
    "default_icon": "clip32.png",
    "default_popup": "popup.html",
    "default_title": "Clipper"
  },
  "host_permissions": [
    "https://theclipping.co/*"
  ],
  "permissions": [
    "tabs",
    "menus",
    "storage"
  ],
  "icons": {
    "16": "clip16.png",
    "22": "clip22.png",
    "24": "clip24.png",
    "32": "clip32.png",
    "48": "clip48.png",
    "64": "clip64.png",
    "96": "clip96.png",
    "128": "clip128.png",
    "512": "clip512.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2cce5765-bff3-4a8e-ae04-69797f422b41}"
    }
  }
}