Pdf Concatenate Benchmarks
| Method | pageCount | Mean | Gen0 | Allocated |
|---|---|---|---|---|
| 'Aspose Pages.Add' | 2 | 2,503.2 us | 1332.0313 | 4876.79 KB |
| 'Aspose Concatenate' | 2 | 4,798.3 us | 1328.1250 | 5444.77 KB |
| iText7 | 2 | 475.2 us | 59.5703 | 368.22 KB |
| PdfSharp | 2 | 299.6 us | 96.1914 | 592.74 KB |
| 'IronPDF Merge' | 2 | 6,394.9 us | 296.8750 | 1854.42 KB |
| 'IronPDF Append' | 2 | 1,263.9 us | 109.3750 | 651.42 KB |
| 'Aspose Pages.Add' | 10 | 11,708.1 us | 6656.2500 | 26142.04 KB |
| 'Aspose Concatenate' | 10 | 14,935.8 us | 6656.2500 | 25028.82 KB |
| iText7 | 10 | 2,455.5 us | 289.0625 | 1881.7 KB |
| PdfSharp | 10 | 1,718.1 us | 453.1250 | 2773.94 KB |
| 'IronPDF Merge' | 10 | 94,180.5 us | 6000.0000 | 31913.88 KB |
| 'IronPDF Append' | 10 | 9,141.3 us | 781.2500 | 4491.93 KB |
| 'Aspose Pages.Add' | 100 | 127,451.2 us | 63250.0000 | 265330.29 KB |
| 'Aspose Concatenate' | 100 | 198,737.2 us | 45000.0000 | 246498.14 KB |
| iText7 | 100 | 33,485.4 us | 3562.5000 | 20349.26 KB |
| PdfSharp | 100 | 20,657.7 us | 4031.2500 | 27148.44 KB |
| 'IronPDF Merge' | 100 | 6,503,413.6 us | 365000.0000 | 2519448.8 KB |
| 'IronPDF Append' | 100 | 96,420.3 us | 8000.0000 | 47711.84 KB |
| 'Aspose Pages.Add' | 1000 | 1,873,453.9 us | 281000.0000 | 2656752.68 KB |
| 'Aspose Concatenate' | 1000 | 2,180,616.7 us | 181000.0000 | 2609810.86 KB |
| iText7 | 1000 | 355,736.8 us | 28000.0000 | 195776.85 KB |
| PdfSharp | 1000 | 224,457.3 us | 43000.0000 | 274143.6 KB |
| 'IronPDF Append' | 1000 | 1,031,910.6 us | 81000.0000 | 479870.33 KB |
Diagnostics merging 1000 pdf files
total memory - includes startup time
Aspose Pages().Add()
86MB - 7.7s
Aspose Concatenate()
182MB - 8.5s
iText 7
88MB - 6.9s
PdfSharp
52MB - 6.5s
IronPdf Merge()
463MB - 9:40 min đź‘€
IronPdf AppendPdf()
71MB - 8s
