BINARY WORKBOOK. VISIBLE DATA.
Open an XLSB file.
See the worksheet data.
Inspect saved worksheet values from a binary Excel workbook, locally in your browser. No account or server upload required.
Drop your spreadsheet here
or choose a file from your device
EXCEL BINARY WORKBOOKS · XLSB
Up to 20 MB · Processed locally in your browser
OPEN. WORK. DOWNLOAD.
See what is saved.
Keep expectations clear.
The XLSB importer reads worksheet data using saved values rather than importing complete formula behavior. It is intended for inspecting and extracting data, not full binary-workbook fidelity. Macros are not run, and complex styles or embedded objects may not appear.
- 01
Open the binary workbook
Choose a local .xlsb file.
- 02
Inspect the saved data
Switch worksheets and review values. Formula behavior and workbook objects are limited.
- 03
Keep a useful copy
Download an XLSX copy of the imported worksheet data if needed.
KNOW YOUR WORKSPACE
Useful by design.
Clear about the limits.
A real spreadsheet engine, with compatibility still growing. Keep your original workbook and check important data after editing or conversion.
GridCraft is in alpha. Read the engine’s compatibility notes
| IN YOUR WORKBOOK | WHAT TO EXPECT |
|---|---|
| Values & worksheets | Supported · Multiple sheets and cell data |
| Formulas & formatting | Supported · Compatibility varies by feature |
| Charts & workbook objects | Evolving · Check complex layouts |
| Legacy XLS files | Data import · Values, formulas, number formats |
| XLSB & ODS files | Saved values · Limited formula and style import |
| VBA macros | Not executed |
| Cloud save & collaboration | Not available · Download to keep your work |
A FEW PRACTICAL ANSWERS
Before you open
that workbook.
Your file stays local. Your original stays intact. Your next step stays simple.
What is XLSB?
XLSB is the binary workbook format used by Excel. It differs from the XML-based XLSX format.
Are formulas imported?
XLSB import uses saved values rather than full formula import.
Can I save back to XLSB?
This service offers XLSX output. It does not promise an XLSB writer.
Are macros supported?
No. Macros are not executed.