A minimal, zero-dependency .NET library for generating PDF documents from text and Excel files.
$ dotnet add package MiniPdfA minimal, zero-dependency .NET library for converting office files to PDF.
.xlsx files to paginated PDF with automatic column layoutdotnet add package MiniPdfusing MiniSoftware;
// File to file
MiniPdf.ConvertToPdf("data.xlsx", "data.pdf");
// File to byte array
byte[] pdfBytes = MiniPdf.ConvertToPdf("data.xlsx");
// Stream to byte array
using var stream = File.OpenRead("data.xlsx");
byte[] pdfBytes = MiniPdf.ConvertToPdf(stream);MiniPdf output is compared against LibreOffice as the reference renderer across 120 classic test cases (including 30 image-embedding cases and 30 chart cases).
| Category | Count | Threshold |
|---|---|---|
| 🟢 Excellent | 108 | ≥ 90% |
| 🟡 Acceptable | 11 | 70% – 90% |
| 🔴 Needs Improvement | 1 | < 70% |
Average overall score: 96.5% (text similarity 40% + visual similarity 40% + page count 20%)
All test cases comparing MiniPdf output vs LibreOffice reference. Page 1 shown for multi-page results.
| MiniPdf | LibreOffice (Reference) |
|---|---|
| classic01 | Basic table with headers 🟢 99.8% |
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| classic02 | Multiple worksheets 🟢 99.7% |
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| classic03 | Empty workbook 🟢 100.0% |
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| classic04 | Single cell 🟢 100.0% |
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| classic05 | Wide table 🟢 99.6% |
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| classic06 | Tall table 🟢 97.5% |
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| classic07 | Numbers only 🟢 99.9% |
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| classic08 | Mixed text and numbers 🟢 99.8% |
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| classic09 | Long text 🔴 61.0% |
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| classic10 | Special xml characters 🟢 99.8% |
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| classic11 | Sparse rows 🟢 100.0% |
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| classic12 | Sparse columns 🟢 99.9% |
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| classic13 | Date strings 🟢 99.8% |
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| classic14 | Decimal numbers 🟢 99.8% |
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| classic15 | Negative numbers 🟢 99.8% |
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| classic16 | Percentage strings 🟢 99.8% |
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| classic17 | Currency strings 🟢 99.8% |
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| classic18 | Large dataset 🟢 95.2% |
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| classic19 | Single column list 🟢 99.8% |
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| classic20 | All empty cells 🟢 100.0% |
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| classic21 | Header only 🟢 100.0% |
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| classic22 | Long sheet name 🟢 99.9% |
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| classic23 | Unicode text 🟢 91.8% |
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| classic24 | Red text 🟢 99.7% |
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| classic25 | Multiple colors 🟢 99.6% |
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| classic26 | Inline strings 🟢 99.9% |
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| classic27 | Single row 🟢 99.9% |
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| classic28 | Duplicate values 🟢 99.8% |
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| classic29 | Formula results 🟢 99.8% |
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| classic30 | Mixed empty and filled sheets 🟢 100.0% |
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| classic31 | Bold header row 🟢 99.7% |
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| classic32 | Right aligned numbers 🟢 99.8% |
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| classic33 | Centered text 🟢 99.9% |
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| classic34 | Explicit column widths 🟢 99.7% |
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| classic35 | Explicit row heights 🟢 99.3% |
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| classic36 | Merged cells 🟢 99.7% |
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| classic37 | Freeze panes 🟢 99.4% |
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| classic38 | Hyperlink cell 🟢 99.9% |
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| classic39 | Financial table 🟢 99.6% |
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| classic40 | Scientific notation 🟢 99.2% |
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| classic41 | Integer vs float 🟢 99.8% |
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| classic42 | Boolean values 🟢 99.5% |
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| classic43 | Inventory report 🟢 99.3% |
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| classic44 | Employee roster 🟢 97.8% |
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| classic45 | Sales by region 🟢 99.8% |
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| classic46 | Grade book 🟢 99.5% |
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| classic47 | Time series 🟢 99.0% |
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| classic48 | Survey results 🟢 99.2% |
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| classic49 | Contact list 🟢 98.6% |
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| classic50 | Budget vs actuals 🟢 99.3% |
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| classic51 | Product catalog 🟢 98.4% |
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| classic52 | Pivot summary 🟢 99.3% |
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| classic53 | Invoice 🟢 99.3% |
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| classic54 | Multi level header 🟢 99.5% |
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| classic55 | Error values 🟢 99.7% |
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| classic56 | Alternating row colors 🟢 99.5% |
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| classic57 | Cjk only 🟡 85.2% |
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| classic58 | Mixed numeric formats 🟢 99.3% |
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| classic59 | Multi sheet summary 🟢 99.8% |
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| classic60 | Large wide table 🟢 96.9% |
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| classic61 | Product card with image 🟢 99.6% |
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| classic62 | Company logo header 🟢 99.5% |
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| classic63 | Two products side by side 🟢 99.7% |
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| classic64 | Employee directory with photo 🟢 98.2% |
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| classic65 | Inventory with product photos 🟢 98.1% |
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| classic66 | Invoice with logo 🟢 98.8% |
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| classic67 | Real estate listing 🟢 99.7% |
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| classic68 | Restaurant menu 🟢 97.1% |
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| classic69 | Image only sheet 🟢 99.9% |
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| classic70 | Product catalog with images 🟢 97.7% |
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| classic71 | Multi sheet with images 🟢 99.7% |
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| classic72 | Bar chart image with data 🟢 99.3% |
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| classic73 | Event flyer with banner 🟢 99.3% |
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| classic74 | Dashboard with kpi image 🟢 97.7% |
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| classic75 | Certificate with seal 🟢 99.4% |
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| classic76 | Product image grid 🟢 99.4% |
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| classic77 | News article with hero image 🟢 99.1% |
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| classic78 | Small icon per row 🟢 98.8% |
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| classic79 | Wide panoramic banner 🟢 99.6% |
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| classic80 | Portrait tall image 🟢 99.6% |
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| classic81 | Step by step with images 🟢 98.3% |
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| classic82 | Before after images 🟢 99.5% |
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| classic83 | Color swatch palette 🟢 98.3% |
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| classic84 | Travel destination cards 🟢 97.4% |
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| classic85 | Lab results with image 🟢 99.2% |
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| classic86 | Software screenshot features 🟢 98.6% |
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| classic87 | Sports results with logos 🟢 99.5% |
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| classic88 | Image after data 🟢 99.5% |
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| classic89 | Nutrition label with image 🟢 99.3% |
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| classic90 | Project status with milestones 🟢 97.3% |
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| classic91 | Simple bar chart 🟢 96.8% |
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| classic92 | Horizontal bar chart 🟢 97.1% |
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| classic93 | Line chart 🟢 94.4% |
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| classic94 | Pie chart 🟢 97.3% |
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| classic95 | Area chart 🟡 77.6% |
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| classic96 | Scatter chart 🟢 91.7% |
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| classic97 | Doughnut chart 🟢 97.5% |
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| classic98 | Radar chart 🟢 95.3% |
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| classic99 | Bubble chart 🟢 91.5% |
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| classic100 | Stacked bar chart 🟢 93.9% |
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| classic101 | Percent stacked bar 🟢 92.2% |
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| classic102 | Line chart with markers 🟢 93.5% |
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| classic103 | Pie chart with labels 🟡 85.6% |
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| classic104 | Combo bar line chart 🟡 81.6% |
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| classic105 | 3d bar chart 🟡 85.0% |
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| classic106 | 3d pie chart 🟢 97.0% |
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| classic107 | Multi series line 🟡 82.7% |
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| classic108 | Stacked area chart 🟢 93.0% |
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| classic109 | Scatter with trendline 🟢 91.0% |
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| classic110 | Chart with legend 🟡 83.2% |
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| classic111 | Chart with axis labels 🟢 92.1% |
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| classic112 | Multiple charts 🟡 85.7% |
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| classic113 | Chart sheet 🟡 86.3% |
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| classic114 | Chart large dataset 🟢 92.3% |
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| classic115 | Chart negative values 🟢 93.4% |
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| classic116 | Percent stacked area 🟢 92.4% |
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| classic117 | Stock ohlc chart 🟡 79.8% |
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| classic118 | Bar chart custom colors 🟢 96.7% |
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| classic119 | Dashboard multi charts 🟢 93.9% |
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| classic120 | Chart with date axis 🟡 76.1% |
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This project is licensed under the Apache License 2.0.