Convert

Convert Spreadsheet

Convert between Excel, OpenDocument, and CSV spreadsheet formats. Multi-sheet workbooks export the first sheet when converting to CSV. SnapOtter runs on your own server so financial data stays confidential.

Deploy with Docker View Source

Features

  • Supports XLSX, ODS, and CSV as both input and output formats
  • Preserves formulas, formatting, and cell styles during conversion
  • Multi-sheet workbook support with first-sheet CSV export
  • Handles large spreadsheets with thousands of rows efficiently
  • Self-hosted processing keeps financial data on your network

What you can do

  • Converting an XLSX financial report to ODS for sharing with LibreOffice users
  • Exporting a spreadsheet to CSV for import into a database or analytics tool
  • Transforming ODS budget files to Excel format for corporate compatibility
  • Converting legacy XLS files to modern XLSX format for long-term archival

Self-hosted. Your files never leave your network.

SnapOtter runs entirely on your own infrastructure. Files processed with Convert Spreadsheet are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.

Frequently asked questions

What happens to multiple sheets when exporting to CSV?
CSV only supports a single sheet, so SnapOtter exports the first sheet. For multi-sheet output, use XLSX or ODS format instead. All processing runs locally on your server.
Are formulas preserved during conversion?
Formulas are preserved when converting between XLSX and ODS. CSV export converts formulas to their calculated values. Your spreadsheets never leave your self-hosted network.
Can I convert spreadsheets with sensitive financial data?
Yes. SnapOtter processes everything on your own server. No data is sent to external services, making it safe for confidential financial, HR, or legal spreadsheets.

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