Excel Data Writer Benchmarks
December 29, 2025 ยท View on GitHub
These benchmarks measure writing a 65k row Excel file, with data read from in-memory objects.
| Method | Mean | Error | Allocated |
|---|---|---|---|
| SylvanXlsb | 46.03 ms | 0.773 ms | 111.19 KB |
| SylvanXlsx | 69.46 ms | 1.211 ms | 165.8 KB |
| LargeXlsx | 92.45 ms | 2.173 ms | 136.07 KB |
| MiniXl | 187.48 ms | 5.299 ms | 333634.53 KB |
| SwiftExcelXlsx | 299.97 ms | 2.572 ms | 101921.76 KB |
| AsposeXlsx | 569.09 ms | 7.782 ms | 248143.48 KB |
| AsposeXlsb | 593.43 ms | 8.379 ms | 308156.8 KB |
| OpenXmlXlsx | 990.82 ms | 20.935 ms | 541553.01 KB |
| NanoXlsxWrite | 1,080.34 ms | 20.613 ms | 1414844.21 KB |
| EPPlusViaDataReader | 1,412.21 ms | 14.683 ms | 400815.04 KB |
| EPPlusXlsx | 1,521.88 ms | 22.968 ms | 643065.62 KB |
| NpoiXlsx | 2,098.84 ms | 34.782 ms | 1135254.88 KB |