Run In Playground

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Run In Playground",
  "version": "1.1",
  "description": "Run any JavaScript code on a page in a code playground of your choice",
  "manifest_version": 2,
  "permissions": [
    "activeTab",
    "https://codepen.io/pen/define",
    "https://jsfiddle.net/api/post/library/pure/",
    "contextMenus",
    "storage"
  ],
  "background": {
    "persistent": true,
    "page": "background.html"
  },
  "browser_action": {
    "name": "Run In Playground"
  },
  "options_page": "options.html",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "128": "icon128.png"
  }
}