Examine source code of AnkiDamage

{
  "manifest_version": 2,
  "name": "AnkiDamage",
  "version": "1.0.2",
  "description": "Scrape data from KanjiDamage's kanji site and use AnkiServer API to add new cards automatically.",
  "icons": {
    "48": "icons/icon48.png"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "AnkiDamage",
    "default_icon": "icons/icon32.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "http://localhost/*",
    "http://127.0.0.1:8765/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.kanjidamage.com/kanji/*"
      ],
      "js": [
        "./content_scripts/scraper.js",
        "./content_scripts/jquery-3.min.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./background/card_maker.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ac372da9-70d5-461a-9f71-f0416d74068e}"
    }
  }
}