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ABCrimson edited this page Mar 6, 2026 · 21 revisions

modern-xlsx Wiki

Welcome to the modern-xlsx wiki — comprehensive knowledge base for the library.

Current version: v0.9.1

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New in v0.9.1

  • 35-Point Performance & Maintainability Overhaulryu float formatting, byte-level JSON escaping, zero-alloc relationship constants, module splits for worksheet.rs (7K lines → 4 files) and charts.rs (5K lines → 4 files), O(1) sheet name cache, discriminated union Worker messages, cargo-audit + npm audit CI scanning, matrix testing (Node 24+25 × ubuntu+windows)
  • Full Changelog

New in v0.9.0

  • Pivot Tables (read-only) — full OOXML pivot table, cache definition, and cache records parsing
    • ws.pivotTables read-only API
  • Threaded Comments (read + write) — modern threaded comment threads with person management
    • ws.addThreadedComment() and ws.replyToComment() APIs
  • Slicers (read-only) — slicer definitions and caches for pivot table filtering
  • Timelines (read-only) — timeline definitions and caches for date-based pivot filtering
  • CLI Toolmodern-xlsx info and modern-xlsx convert commands
  • Feature-Gated WASMencryption and charts Cargo features for smaller bundles
  • ModernXlsxError — structured error handling with .code property
  • Performance — 4-8x faster bulk read/write, XML buffer pre-allocation
  • Full Changelog

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