Examine source code of MtgGoldfishToCad

{
  "manifest_version": 2,
  "name": "MtgGoldfishToCad",
  "version": "1.8",
  "description": "Display MtgGoldFish prices as (CAD$) Canadian Dollars.",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.mtggoldfish.com/sets/*"
      ],
      "js": [
        "usdToCadPerSets.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/price/*"
      ],
      "js": [
        "usdToCadPerCards.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/archetype/*"
      ],
      "js": [
        "usdToCadPerDecks.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/movers/paper/*"
      ],
      "js": [
        "usdToCadMovers.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/movers-details/paper/*"
      ],
      "js": [
        "usdToCadMoversDetails.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/prices/paper/*"
      ],
      "js": [
        "usdToCadPrices.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/index/*"
      ],
      "js": [
        "usdToCadIndexes.js"
      ]
    },
    {
      "matches": [
        "*://*.mtggoldfish.com/deck/*"
      ],
      "js": [
        "usdToCadPerDecks.js"
      ]
    }
  ],
  "permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{f967d657-27f8-4776-91c5-6cf940b74ffa}"
    }
  }
}