1 package tagged with “fast-excel”
VelocityExcel is a high-performance, ultra fast, streaming Excel (XLSX) reader and writer for .NET with minimal memory footprint. ✓ The only Excel library that delivers ultra-high-speed read and write operations with the lowest memory consumption. ✓ Forward-only streaming read/write (no loading entire file into memory) ✓ Culture-aware parsing of dates, times, durations, numbers, and booleans ✓ Shared string deduplication with overflow protection ✓ Precise ECMA-376 format detection for date/time/duration values ✓ Safe XML parsing ✓ Zero external dependencies Ideal for processing large Excel files in ASP.NET, ASP.NET MVC, ASP.NET Core, Blazor, Web API, Windows Forms, WPF background services, or CLI tools.