NMR plugin

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "NMR plugin",
  "version": "1.4",
  "permissions": [
    "https://tomtop/"
  ],
  "description": "NMR plugin",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "16": "images/16x16.png",
    "32": "images/32x32.png",
    "48": "images/48x48.png",
    "128": "images/128x128.png"
  },
  "manifest_version": 2
}