manifest.json

{
  "name": "Selenium IDE",
  "short_name": "Selenium IDE",
  "description": "Selenium IDE",
  "author": "SeleniumHQ",
  "homepage_url": "https://seleniumhq.org",
  "version": "1.1",
  "manifest_version": 2,
  "browser_action": {
    "default_title": "Selenium IDE",
    "default_popup": "popup.html",
    "default_icon": {
      "512": "assets/images/selenium-ide-logo-512.png",
      "128": "assets/images/selenium-ide-logo-128.png",
      "48":  "assets/images/selenium-ide-logo-48.png",
      "24":  "assets/images/selenium-ide-logo-24.png",
      "16":  "assets/images/selenium-ide-logo-16.png"
    }
  },

  "background": {
    "scripts": ["scripts/background.js"]
  },

  "options_ui": {
    "chrome_style": true,
    "page": "options.html"
  },

  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "windows",
    "<all_urls>"
  ],

  "icons": {
    "512": "assets/images/selenium-ide-logo-512.png",
    "128": "assets/images/selenium-ide-logo-128.png",
    "48":  "assets/images/selenium-ide-logo-48.png",
    "24":  "assets/images/selenium-ide-logo-24.png",
    "16":  "assets/images/selenium-ide-logo-16.png"
  },
  
  "content_scripts": [
    {
      "matches": ["<all_urls>"],
      "css": [],
      "js": ["scripts/content.js"]
    }
  ]
}