ODS (OpenDocument Spreadsheet) is the native format of LibreOffice Calc. Converting it to PDF creates a fixed-layout document where each sheet appears as printed pages — the standard output for sharing spreadsheet data in a format that cannot be accidentally edited.
What is preserved
Cell values, number formatting, table borders, merged cells, and column widths are rendered exactly as LibreOffice Calc would print them. Formula results are shown (not the formula text). Charts embedded in the spreadsheet appear in the PDF.
File handling
The ODS file is sent over HTTPS to a secure server running LibreOffice, converted to PDF, and the file is deleted immediately. No copies are retained.
What gets preserved
Cell values, text formatting (bold, italic, colour), number and date formats, column widths, row heights, merged cells, table borders, and frozen headers are all rendered in the output PDF. Formulas are shown as their calculated values, not as formula text. Charts and graphs embedded in the spreadsheet appear on the corresponding page.
Print areas defined in the spreadsheet are respected: if you have set a print range, only that range will appear in the PDF. If no print range is defined, LibreOffice renders the active data area across as many pages as needed, with page breaks as configured.
Multi-sheet workbooks
Each sheet in the workbook becomes its own section of the PDF. Sheet tabs appear in the output as separate page groups. If a sheet has no data, it is not included. This makes ODS to PDF a clean way to distribute a complete workbook all the sheets, in order, as a single document the recipient cannot edit.
Column overflow
Wide spreadsheets that exceed the printable page width are the most common source of unexpected output. If a spreadsheet has many columns, LibreOffice may scale down the content to fit or split it across multiple pages, depending on the print scaling settings in the ODS file. To control this, open the spreadsheet in LibreOffice Calc, go to Format, Page Style, Sheet and set scaling before running the conversion.