Web Injector

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Web Injector",
  "short_name": "W{I}",
  "author": "Trevor Reed",
  "description": "Inject JavaScript code into every page (e.g. to help with debugging). For example, make your own wrapper for console logging.",
  "version": "1.0.1",
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "jquery.min.js",
      "bg.js"
    ]
  },
  "options_page": "options.html",
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "run_at": "document_end",
      "js": [
        "content.js"
      ]
    }
  ]
}