Examine source code of TalesTrove

{
  "icons": {
    "16": "icon16.plasmo.e7bcd3ac.png",
    "32": "icon32.plasmo.ce39377b.png",
    "48": "icon48.plasmo.3c17e113.png",
    "64": "icon64.plasmo.df317abe.png",
    "128": "icon128.plasmo.6a4310c5.png"
  },
  "manifest_version": 2,
  "browser_action": {
    "default_icon": {
      "16": "icon16.plasmo.e7bcd3ac.png",
      "32": "icon32.plasmo.ce39377b.png",
      "48": "icon48.plasmo.3c17e113.png",
      "64": "icon64.plasmo.df317abe.png",
      "128": "icon128.plasmo.6a4310c5.png"
    }
  },
  "version": "2.1.0",
  "author": "Emmanuel C. Jemeni <emmanueljemeni@gmail.com>",
  "name": "TalesTrove",
  "description": "TalesTrove is a browser extension that allows users to easily save links to their favorite fictional stories and series.",
  "background": {
    "scripts": [
      "static/background/index.js"
    ]
  },
  "permissions": [
    "tabs",
    "https://archiveofourown.org/*",
    "https://archiveofourown.gay/*",
    "https://m.fanfiction.net/*",
    "https://fanfiction.net/*",
    "https://forum.questionablequesting.com/*",
    "https://forums.spacebattles.com/*",
    "https://forum.spacebattles.com/*",
    "https://forums.sufficientvelocity.com/*"
  ],
  "web_accessible_resources": [
    "tabs/talestrove.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "talestrove@Jemeni11.github.com"
    }
  }
}