Examine source code of Form State Remembrancer

{
  "manifest_version": 2,
  "name": "Form State Remembrancer",
  "version": "2.1.0",
  "description": "Remembers and restores the state of form inputs on a page. Modern UI with statistics, history tracking, and beautiful animations!",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@form-remembrancer",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "notifications",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "Form State Remembrancer"
  },
  "commands": {
    "save-form": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "Command+Shift+S"
      },
      "description": "Save form state"
    },
    "restore-form": {
      "suggested_key": {
        "default": "Ctrl+Shift+R",
        "mac": "Command+Shift+R"
      },
      "description": "Restore form state"
    },
    "toggle-auto-restore": {
      "suggested_key": {
        "default": "Ctrl+Shift+A",
        "mac": "Command+Shift+A"
      },
      "description": "Toggle auto-restore for current page"
    },
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Open Form Remembrancer popup"
    }
  },
  "web_accessible_resources": [
    "icons/*.png"
  ],
  "author": "Form Remembrancer Team",
  "homepage_url": "https://github.com/zacpr/remembrancer",
  "short_name": "Form Remembrancer"
}