Examine source code of Pachydermatologist

{
  "description": "Customizations for the Mastodon advanced interface",
  "manifest_version": 2,
  "name": "Pachydermatologist",
  "version": "1.0.2",
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "*://*/*"
  ],
  "icons": {
    "48": "logo.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "pachydermatologist.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_icon": {
      "19": "logo-toolbar.png"
    },
    "default_title": "Pachydermatologist",
    "default_popup": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pachydermatologist@elle.codes"
    }
  }
}