manifest.json

{
  "browser_specific_settings": {
    "gecko": {
      "id": "contact.nhentaidownloader@zirk.eu"
    }
  },
  "name": "NHentai Downloader",
  "version": "2.1.10",
  "description": "A chrome extension to download doujinshi from NHentai",
  "icons": {
    "64": "Icon.png"
  },
  "browser_action": {
    "default_popup": "index.html"
  },
  "permissions": [
    "downloads",
    "tabs",
    "https://nhentai.net/*",
    "https://i1.nhentai.net/*",
    "https://i2.nhentai.net/*",
    "https://i3.nhentai.net/*",
    "https://i4.nhentai.net/*",
    "storage"
  ],
  "author": "Xwilarg",
  "background": {
    "scripts": ["js/background.js"]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "content_scripts": [{
    "matches": [
      "https://nhentai.net/*"
    ],
    "css" : ["css/content.css"],
    "js": ["js/content.js"]
  }],
  "manifest_version": 2
}