Examine source code of Search Danawa

{
  "manifest_version": 2,
  "name": "Search Danawa",
  "description": "Adds a search engine that searches danawa.com",
  "version": "1.1",
  "icons": {
    "256": "icons/danawa.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "67.0",
      "id": "DanawaExtension@ktcar214"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Danawa(다나와)",
      "search_url": "https://search.danawa.com/dsearch.php?query={searchTerms}&tab=main",
      "keyword": "@danawa",
      "favicon_url": "http://danawa.com/favicon.ico",
      "is_default": false,
      "encoding": "UTF-8"
    }
  },
  "author": "ktcar214",
  "homepage_url": "https://github.com/ktcar214/firefox-extension-danawa"
}