LinkBuddy

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "LinkBuddy",
  "description": "Helps you automatically hyperlink keywords while you type in Gmail.",
  "version": "1.4.5",
  "browser_action": {
    "default_icon": "img/link16.png",
    "default_popup": "popup.html",
    "default_title": "LinkBuddy"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*",
        "https://www.linkbuddy.io/*"
      ],
      "js": [
        "js/jquery-3.2.1.min.js",
        "contentscript.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/jquery-3.2.1.min.js",
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "img/link16.png",
    "48": "img/lb48.png",
    "128": "img/link128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "cookies",
    "https://www.linkbuddy.io/*"
  ],
  "externally_connectable": {
    "matches": [
      "https://www.linkbuddy.io/*"
    ]
  },
  "content_security_policy": "script-src 'self' https://ssl.google-analytics.com https://www.linkbuddy.io/*; connect-src * data: https://www.googleapis.com/oauth2/*; object-src 'self'"
}