Examine source code of Merriam's Webpage

{
  "manifest_version": 2,
  "name": "Merriam's Webpage",
  "version": "1.3.2",
  "developer": {
    "name": "April Roszkowski",
    "url": "https://github.com/szkow/merriam-webpage"
  },
  "description": "Allows you to easily look up words on webpages in Merriam-Webster's dictionary. Highlight a word and click the book icon to get started.",
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "main.js"
      ],
      "css": [
        "dict_style.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "book-solid.svg",
    "chevron-circle-right-solid.svg",
    "ZillaSlab-Light.woff",
    "ZillaSlab-SemiBold.woff"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Merriam's Webpage",
    "default_popup": "popup.html",
    "default_icon": "dictlookup.jpg"
  },
  "permissions": [
    "contextMenus",
    "storage"
  ]
}