Examine source code of Per-Site Zoom Memory

{
  "manifest_version": 2,
  "name": "Per-Site Zoom Memory",
  "version": "1.0.0",
  "description": "Sets and recalls a custom zoom level for every site you visit, so each page always opens at the size you like. Works offline.",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b5a16602-5f03-4004-9be4-51d744e6eff6}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "source/background.js"
    ]
  },
  "browser_action": {
    "default_title": "Per-Site Zoom Memory",
    "default_popup": "source/popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png"
    }
  }
}