Peek

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Peek",
  "version": "1.6",
  "manifest_version": 2,
  "description": "Allows users to preview their tabs",
  "browser_action": {
    "default_icon": "icon128.png",
    "default_title": "Peek",
    "default_popup": "popup.html"
  },
  "content_security_policy": "script-src 'self' https://cdnjs.cloudflare.com/ajax/libs/materialize/0.97.8/js/materialize.min.js; object-src 'self'",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "windows": "Ctrl+Space",
        "mac": "MacCtrl+Q"
      }
    }
  },
  "permissions": [
    "activeTab",
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "<all_urls>"
      ],
      "css": [
        "style.css"
      ],
      "js": [
        "scale.js"
      ]
    }
  ]
}