Binary Workbook Bridge
Extract useful data from an Excel binary workbook while keeping the differences visible. Your original file stays local and unchanged.
How we build a check
This workbench processes supported inputs locally. We test calculations, file structure and generated artifacts using independent readers or known fixtures where available. The example runs the same processing path as a supplied input; it does not stand in for checking your own result.
Editorial responsibility
KitForma maintains this tool and its guides. The source notes on the tool page link to the supporting documentation. We do not claim affiliation with the referenced hardware manufacturers or platforms. Review date: 2026-10-19.
Limits and updates
One XLSB up to 16 MiB; expanded archive up to 64 MiB; 1–32 sheets; used ranges up to 20,000 rows and 256 columns with 100,000 total grid cells. VBA and macro sheets are rejected. No password/decryption, recalculation, chart/pivot reproduction, full styling, XLS or XLSX input. Values-only extraction may omit unsupported binary records; retain the original. If a specification changes or a result appears incorrect, send the relevant source URL and a non-sensitive reproduction to kitforma@outlook.com.
Open-source components
The tools use self-hosted open-source components appropriate to each format, including PDF.js, pdf-lib, fflate, SheetJS, MediaInfo by MediaArea.net SARL and others. Component versions and licenses. MediaInfo license · fflate license.