Examine source code of Paste without spaces

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "2.4",
  "author": "Jérémy Petitseigneur",
  "description": "__MSG_extensionDescription__",
  "homepage_url": "https://www.ldlcible.com/nospace/index.html",
  "icons": {
    "16": "icons/logo-16.png",
    "32": "icons/logo-32.png",
    "48": "icons/logo-48.png",
    "96": "icons/logo-96.png",
    "128": "icons/logo-128.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "clipboardRead",
    "menus",
    "activeTab",
    "storage"
  ],
  "optional_permissions": [
    "clipboardWrite"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/logo-16.png",
      "32": "icons/logo-32.png"
    },
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "paste-without-spaces": {
      "suggested_key": {
        "default": "Ctrl+Shift+V",
        "mac": "Command+Shift+V",
        "windows": "Ctrl+Shift+V"
      },
      "description": "Paste without spaces"
    }
  },
  "content_security_policy": "default-src 'self'"
}