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.
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Updated
Jul 14, 2026 - TypeScript
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.
High-performance XLSX read/write for JavaScript & TypeScript, powered by Rust + WASM. Full styling, charts, pivot tables, encryption, formulas, streaming — features SheetJS charges for, free and open source.
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