Examine source code of Image Editor

{
  "author": "the-image-editor.com",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "images/icons/128.png",
    "default_title": "__MSG_ext_name__",
    "default_popup": "index.html"
  },
  "content_scripts": [
    {
      "all_frames": false,
      "js": [
        "js/content_script.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_end"
    }
  ],
  "default_locale": "en",
  "description": "__MSG_ext_description__",
  "homepage_url": "https://www.the-image-editor.com/",
  "icons": {
    "16": "images/icons/16.png",
    "32": "images/icons/32.png",
    "48": "images/icons/48.png",
    "128": "images/icons/128.png"
  },
  "manifest_version": 2,
  "name": "__MSG_ext_name__",
  "permissions": [
    "contextMenus",
    "https://www.the-image-editor.com/"
  ],
  "version": "1.5.915"
}