biff8

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zanlucathiago / xls-reader

Zero-dependency reader for legacy .xls (BIFF8 / Excel 97–2003) files. Returns each sheet as a grid of typed cells. Runs in Node and the browser.

nodejs parser typescript browser excel xls spreadsheet zero-dependency xls-parser ole2 biff8 sheetjs-alternative legacy-excel

Updated Jul 20, 2026
TypeScript

capp-adocia / xls2img

Star

A C library for extracting images from Excel 97-2003 (.xls) files. Parses BIFF8 MsoDrawingGroup records to recover embedded PNG/JPEG images.

c library png jpeg excel xls command-line-tool image-extraction biff8

Updated Apr 9, 2026
C

High-performance, lightweight .NET Standard 2.0 library for reading, writing, and streaming Excel and spreadsheet files (XLSX, XLS, XLSM, XLSB, CSV, TSV, HTML, XML 2003, JSON). Features native BIFF8 XLS support, zero-allocation streaming, automatic format detection, and a built-in Excel formula engine.

csv csharp dotnet excel xlsx xls spreadsheet office netstandard openxml office365 excel-reader excel-writer excel-library formula-engine biff8

Updated Jul 17, 2026
C#

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