Examine source code of HTML Tag Changer

{
  "manifest_version": 2,
  "name": "HTML Tag Changer",
  "version": "1.0",
  "description": "Change the HTML tag names on a page. You can specify the selected elements and how they should be replaced. Furthermore you can just hide or remove the elements.",
  "homepage_url": "https://gitlab.com/kai.grunert/browser-add-on-html-tag-changer",
  "icons": {
    "48": "icons/replace-48.png",
    "96": "icons/replace-96.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/replace-96.png",
    "default_title": "HTML Tag Changer",
    "default_popup": "popup/choose_html_elements.html"
  }
}