Wiktionary Translator

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Wiktionary Translator",
  "description": "Quickly look up words in wiktionary as you read",
  "version": "1.0.0",
  "manifest_version": 2,
  "options_page": "options/options.html",
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/selection.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "MacCtrl+Shift+F"
      }
    }
  }
}