Examine source code of PDFChampions

{
  "manifest_version": 3,
  "name": "PDFChampions",
  "version": "1.0.4",
  "description": "Quick access to PDFChampions tools. Press Alt+C to open PDFChampions, or type 'c' + Space in the address bar.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "search"
  ],
  "commands": {
    "open-pdfchampions": {
      "suggested_key": {
        "default": "Alt+C",
        "mac": "MacCtrl+C"
      },
      "description": "Open PDFChampions"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Champions Search",
      "keyword": "champion",
      "search_url": "https://search.pdfchampions.com/search?pid=s50002&ext=1&q={searchTerms}",
      "favicon_url": "icons/icon-48.png",
      "is_default": true
    }
  },
  "omnibox": {
    "keyword": "c"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    },
    "default_title": "PDFChampions (Alt+C)",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pdfchampions@pdfchampions.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "searchTerms"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}