Anyfile
Open file
.xlsbTypical support level 3

Open XLSB Spreadsheets Online

XLSB stores modern Excel workbook records in the binary BIFF12 format rather than worksheet XML. Anyfile uses SheetJS to expose supported cells and sheets without converting or uploading the workbook.

Choose a .xlsb file

Your file stays on this device

Anyfile reads only the local file you select. Parsing, decoding and rendering happen in this browser tab; the file is not uploaded to Anyfile servers.

What Anyfile can show

  • Worksheet names, cells and cached values
  • Common workbook number formats

Limits and conditions

  • Macros, external links and advanced workbook objects are not executed
  • Binary records unsupported by SheetJS may be omitted

IMPLEMENTATION

Viewers responsible for this format

Excel viewer
Read-only workbook parsing and virtualized sheet browsing.
See implementation and open-source credits

Common question

Is XLSB just a renamed XLSX?

No. Both are modern Excel formats, but XLSB encodes workbook records in binary structures instead of XML parts.