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ADD: MuPDF v1.26.10: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.5.
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 11:31:38 +0200
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1 # ZXingCpp
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3 ZXingCpp is a .NET wrapper for the C++ library [zxing-cpp](https://github.com/zxing-cpp/zxing-cpp).
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4
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5 It is an open-source, multi-format linear/matrix barcode image processing library implemented in C++.
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6 It was originally ported from the Java ZXing library but has been developed further and now includes
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7 many improvements in terms of runtime and detection performance.
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10 ## Usage Reading
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12 ```cs
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13 using SkiaSharp;
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14 using ZXingCpp;
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16 public class Program
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17 {
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18 public static void Main(string[] args)
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19 {
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20 var img = SKBitmap.Decode(args[0]).Copy(SKColorType.Gray8);
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21 var iv = new ImageView(img.GetPixels(), img.Info.Width, img.Info.Height, ImageFormat.Lum);
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23 var readBarcodes = new BarcodeReader() {
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24 Formats = args.Length > 1 ? Barcode.FormatsFromString(args[1]) : BarcodeFormats.Any,
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25 TryInvert = false,
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26 // see the ReaderOptions implementation for more available options
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27 };
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29 foreach (var b in readBarcodes.From(iv))
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30 Console.WriteLine($"{b.Format} : {b.Text}");
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31 }
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32 }
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33 ```
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34
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35 Executing this sample code from the command line would look like this:
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36 ```sh
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37 dotnet run -- <image-file-name> [barcode-format-list]
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38 ```
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39
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40 See also the [ZXingCpp.DemoReader](https://github.com/zxing-cpp/zxing-cpp/blob/master/wrappers/dotnet/ZXingCpp.DemoReader/Program.cs)
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41 which shows the use of extension classes to support SkiaSharp and ImageMagick based input.
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42
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43 The NuGet package includes the runtime/native c++ libraries for the x64 architecture on
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44 Windows, Linux and macOS. If something is not working out of the box or you need arm64 support
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45 then you need to build the `[lib]ZXing[.dll|.so|.dylib]` file yourself and make sure the .NET
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46 runtime find it (see e.g. the environment variables `LD_LIBRARY_PATH` on Linux or `PATH` on
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47 Windows).
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48
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49 Note: This is an alpha release, meaning the API may still change slightly to potentially feel even
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50 more like a native C# library depending on community feedback.
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52 ## Usage Writing
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54 ```cs
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55 using ZXingCpp;
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56
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57 public class Program
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58 {
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59 public static void Main(string[] args)
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60 {
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61 var barcode = new Barcode(args[1], Barcode.FormatFromString(args[0]));
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62 File.WriteAllText(args[2], barcode.ToSVG());
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63 }
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64 }
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65 ```
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66
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67 Executing this sample code from the command line would look like this:
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68 ```sh
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69 dotnet run -- <barcode-format> <text> <out-svg-file-name>
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70 ```
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71
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72 For an example how to write a PNG file instead of a SVG file, have a look at the
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73 [ZXingCpp.DemoWriter](https://github.com/zxing-cpp/zxing-cpp/blob/master/wrappers/dotnet/ZXingCpp.DemoWriter/Program.cs).
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75 ## Why ZXingCpp?
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76
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77 There are a number of areas where ZXingCpp shines compared to other popular .NET barcode scanner libraries.
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78 The following comparison is with respect to the open source [ZXing.Net](https://www.nuget.org/packages/ZXing.Net)
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79 and the commercial [Dynamsoft](https://www.nuget.org/packages/Dynamsoft.DotNet.Barcode) projects.
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80
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81 ### Performance
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82
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83 To compare the performance of ZXingCpp with the other two libraries, I started the project
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84 [zxing-bench](https://github.com/axxel/zxing-bench).
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85 The [README](https://github.com/axxel/zxing-bench/blob/main/dotnet/README.md) contains a few details but to get
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86 an idea: ZXingCpp is on average 2x-10x faster than Dynamsoft and 10x-50x faster than ZXing.Net.
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87
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88 ### Detection rate
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89
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90 The benchmarking tool also showed that ZXingCpp has a superior detection rate compared to ZXing.Net while it is
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91 sometimes better sometimes worse than the commercial Dynamsoft package, depending on the sample type and the
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92 library configuration. The latter definitively supports more barcode formats compared to the two ZXing decendents.
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93
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94 ### Ease of use
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95
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96 The sample program above shows the simplicitly of the API. The others are similar but seem a bit more
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97 complicated with regards to setting parameters.
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98
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99 ### Standards support
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100
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101 ZXingCpp has full support for binary data and ECI handling and provides a standards conforming `bytesECI()`
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102 data that can be used to simulate a hardware/handheld barcode scanner. This seems not the case for ZXing.Net
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103 and is unclear for Dynamsoft.
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104
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105 ### License / costs
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106
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107 ZXingCpp has the liberal Apache-2.0 license and is free to use in commercial applications. That said,
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108 I accept [donations](https://github.com/sponsors/axxel) and might be available for commercial consulting ;).