Examine source code of Neutral

{
  "manifest_version": 2,
  "name": "Neutral",
  "version": "0.9.30",
  "description": "Neutralize your carbon emissions",
  "applications": {
    "gecko": {
      "id": "hello@shopneutral.io"
    }
  },
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAkN40pi1PHGauTXfAi72XIMz2sodgonqvXh4TG0/s6vCkFHDNUXH42awXw5E2B1taekAieg6ffLTJM0JzhhChc+C3NzGGKH73WwGLDApz8At7BCoIMLR3zfcH7vV5HGJ/7UiknQd5GHXfDmnJTpKmUcwvtr8EB6uhhq6gChT5nGHLo0owvlzpmGHHOMkMfxbPAzf8ff1RPAWj/nJMtHpNL+R89iNb22cNg4BELX1Qj96P+5yIQa9H6+Ov89QtVINv8l+Tsb155Ihc6fRJSq/f/T93YJ+pzGZ9xU5icucjpo9AqiqDL0Q0s+YKcyDhPpU/6/cNFKcWvGZOO1vkh8ym2wIDAQAB",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png",
    "512": "icons/icon512.png"
  },
  "web_accessible_resources": [
    "src/options/new/dashboard.html",
    "src/options/dashboard.html",
    "src/options/wallet/wallet.html",
    "src/options/referral/referral.html",
    "icons/icon-white.png",
    "media/icons/leaf-white.png",
    "media/bear.png",
    "icons/black512.png",
    "icons/lightblue512.png",
    "icons/icon512.png",
    "icons/circle.png",
    "media/logos/whitelogo.png",
    "media/icons/car-white.svg",
    "media/icons/car-green.svg",
    "media/icons/landscape-white.svg",
    "media/icons/cloud-blue.svg",
    "media/icons/cloud-white.svg",
    "media/icons/car-blue.svg",
    "media/icons/landscape-blue.svg",
    "media/icons/bcorp.png",
    "media/icons/giftcard.svg",
    "media/icons/restaurant.svg",
    "media/icons/laundry.svg",
    "media/icons/water.svg",
    "media/icons/leaf.svg",
    "media/icons/wallet.svg",
    "media/icons/landscape-green.svg",
    "media/icons/arrow_right-green.svg",
    "media/trees.png",
    "media/tree.svg",
    "media/boxes.svg",
    "media/factory.svg",
    "media/truck.svg",
    "media/logos/gold_standard_logo.png",
    "media/icons/close.svg",
    "media/wallet.svg",
    "media/line-bracket.svg",
    "media/lines-split.svg",
    "media/search-popup.gif",
    "media/wallet-popup.gif",
    "includes/Stripe.js",
    "fonts/Poppins-Regular.ttf",
    "fonts/Poppins-Bold.ttf",
    "fonts/Poppins-SemiBold.ttf"
  ],
  "externally_connectable": {
    "matches": [
      "*://*.shopneutral.io/*"
    ]
  },
  "permissions": [
    "tab",
    "tabs",
    "storage",
    "*://amazon.ca/*",
    "*://www.amazon.ca/*",
    "*://amazon.com/*",
    "*://www.amazon.com/*",
    "*://amazon.co.uk/*",
    "*://www.amazon.co.uk/*",
    "*://amazon.com.au/*",
    "*://www.amazon.com.au/*",
    "*://*.shopneutral.io/*",
    "*://*.onetreeplanted.org/*",
    "https://connect.facebook.net/en_US/sdk.js"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "background": {
    "scripts": [
      "includes/lodash-core.js",
      "src/global.js",
      "src/auth/auth.js",
      "src/log/LogHelper.js",
      "src/log/BackgroundLogger.js",
      "src/log/RemoteLogger.js",
      "src/BrowserSwitcher.js",
      "src/AbstractWebsiteHandler.js",
      "src/background/BackgroundMessage.js",
      "src/background/IconSwitcher.js",
      "src/background/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Neutral",
    "default_popup": "src/popup/popup.html"
  },
  "options_page": "src/options/new/dashboard.html",
  "options_ui": {
    "page": "src/options/new/dashboard.html",
    "browser_style": false,
    "chrome_style": false,
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "*://amazon.ca/*",
        "*://www.amazon.ca/*",
        "*://amazon.com/*",
        "*://www.amazon.com/*",
        "*://amazon.co.uk/*",
        "*://www.amazon.co.uk/*",
        "*://amazon.com.au/*",
        "*://www.amazon.com.au/*",
        "*://*.shopneutral.io/*",
        "*://*.onetreeplanted.org/*"
      ],
      "css": [
        "includes/glide/glide.core.min.css",
        "src/inject/contentScript.css"
      ],
      "js": [
        "includes/glide/glide.min.js",
        "src/global.js",
        "src/log/LogHelper.js",
        "src/BrowserSwitcher.js",
        "src/AbstractWebsiteHandler.js",
        "src/inject/PageHandler.js",
        "src/inject/PaymentHandler.js",
        "src/inject/contentScript.js",
        "includes/Stripe.js"
      ]
    }
  ]
}