{
  // Required
  "name": "My Extension",
  "version": "versionString",

  // Recommended
  "description": "A plain text description",
  "icons": { ... },
  "default_locale": "en",

  // Pick one (or none)
  "browser_action": {...},
  "page_action": {...},
  "theme": {...},
  "app": {...},

  // Add any of these that you need
  "background_page": "aFile.html",
  "chrome_url_overrides": {...},
  "content_scripts": [...],
  "homepage_url": "http://path/to/homepage",
  "incognito": "spanning" or "split",
  "key": "publicKey",
  "minimum_chrome_version": "versionString",
  "omnibox": { "keyword" : "aString" },
  "options_page": "aFile.html",
  "permissions": [...],
  "plugins": [...],
  "update_url": "http://path/to/updateInfo.xml"
}