Examine source code of URL Params Editor

{
  "manifest_version": 2,
  "name": "URL Params Editor",
  "version": "2.0",
  "author": "Zijar W.",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "description": "An easy-to-use tool to edit URL parameters.",
  "icons": {
    "48": "icons/url_params_editor_48.png",
    "96": "icons/url_params_editor_96.png",
    "512": "icons/url_params_editor_512.png"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/url_params_editor.svg",
    "default_title": "URL Params Editor",
    "default_popup": "popup/parameters.html",
    "theme_icons": [
      {
        "light": "icons/url_params_editor-light.svg",
        "dark": "icons/url_params_editor.svg",
        "size": 32
      }
    ]
  }
}