XLSX (Excel Spreadsheet) is Microsoft Excel's modern XML-based spreadsheet format. It was introduced in 2007 by Microsoft.

Your original XLSX file and the converted WEBM file are automatically deleted from our servers within 24 hours for your privacy and security.

WEBM (WebM) offers several advantages: Open source, Web optimized, Good quality. It is commonly used for web video and html5 video.

Free users can convert XLSX files up to 10 MB. Pro plan supports up to 200 MB, and Business plan supports up to 500 MB per file.

Absolutely. All uploads are encrypted with SSL/TLS, processed on secure servers, and automatically deleted within 24 hours. We never share or access your files.