Importing and exporting

Import CSV or XLSX

1. Choose Open in the header.
2. Select a .csv or .xlsx file from your device.
3. Wait for importing to finish. The imported workbook becomes active; XLSX worksheets appear as separate tabs.
4. Inspect the first rows, dates, and any formulas before continuing.

Import creates a workbook from the file rather than merging it into the active sheet. CSV includes its first row as data, even if it looks like a header. Column labels in the grid remain A, B, C, and so on. Types are inferred from imported values; a mixed-type column may become text.

In the browser, the first XLSX operation downloads additional runtime support. Large datasets stay in the local database and load into the grid a page at a time. File size, browser storage capacity, and available memory still impose practical limits.

XLSX limitations

Hugtab imports tabular data, not a lossless Excel document. It does not preserve Excel styling, merged-cell structure, comments, charts, macros, or other workbook objects. Keep the original file if those matter.

Imported formula expressions are kept separately and evaluated where Hugtab supports them. Unsupported Excel syntax or functions can produce formula errors. Do not assume cached Excel results or arbitrary document behavior will be reproduced.

Export the active sheet

1. Select the sheet tab you want.
2. Open the header's download icon (Export).
3. Choose Download as CSV or Download as XLSX.

Both choices export one sheet, using cell results rather than preserving formula expressions. XLSX creates a new tabular workbook. Neither format preserves Hugtab styles, history, or all workbook tabs.

For imported datasets, export uses the original source-row order and includes rows hidden by the current filter. It is not an export of just the visible filtered view. Sparse edits within the imported table are overlaid. An edit outside that table's imported row/column extent is not included in dataset export. CSV keeps inferred database column types; an edit that cannot be converted to the original column type may retain the original value on CSV export. XLSX overlays edited values without that CSV conversion constraint.

Reopen the downloaded file in your destination application and check important data before sharing it. For a faithful copy of stored browser workbooks, use full workbook backup.