Examine source code of Table to Spreadsheet

{
  "manifest_version": 2,
  "name": "Table to Spreadsheet",
  "description": "Download a table as common spreadsheet files: Excel 2007 (.xlsx), Libre Office (.ods) and CSV",
  "version": "1.0.0.1",
  "homepage_url": "https://github.com/jbfits/table2sheet",
  "author": "Jan Benjamin Fiedler IT-Solutions",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  },
  "background": {
    "scripts": [
      "scripts/jbfits.table2sheet.bg.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/sheetjs/xlsx.full.min.js",
        "scripts/jbfits.table2sheet.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "activeTab",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1759e03c-cde9-4d21-a497-3e09e0b71599}"
    }
  }
}