Examine source code of Search for a Cause

{
  "name": "Search for a Cause",
  "description": "Raise money for charity every time you search.",
  "version": "0.9",
  "browser_action": {
    "default_icon": {
      "16": "./img/logo16.png",
      "32": "./img/logo32.png",
      "48": "./img/logo48.png",
      "128": "./img/logo128.png"
    },
    "default_title": "Search for a Cause"
  },
  "icons": {
    "16": "./img/logo16.png",
    "32": "./img/logo32.png",
    "48": "./img/logo48.png",
    "128": "./img/logo128.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Search for a Cause",
      "keyword": "SFAC",
      "search_url": "https://search.yahoo.com/yhs/search?hspart=gladly&hsimp=yhs-001&type=src_ff.c_none.r_none&p={searchTerms}",
      "favicon_url": "https://tab.gladly.io/search/search-favicon.png",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "permissions": [],
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "strict_min_version": "56.0a1",
      "id": "{0401d86b-981a-49c5-b976-571eb2d6ad63}"
    }
  }
}