Examine source code of PasteProof

{
  "manifest_version": 2,
  "name": "PasteProof",
  "description": "Your pasteboard bodyguard. Prevents you from pasting sensitive data into the wrong fields.",
  "version": "0.2.6",
  "icons": {
    "16": "assets/icons/pasteproof-16.png",
    "48": "assets/icons/pasteproof-48.png",
    "128": "assets/icons/pasteproof-128.png",
    "500": "assets/icons/pasteproof-500.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus",
    "scripting",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{e3fbf001-341c-43bf-bb2a-11af44765116}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "PasteProof",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}