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9 best C# Image Generator libraries in 2025

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by naveen.kumar@openweaver.com dot icon Updated: Mar 8, 2023

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Image generation is an important part of development for various purposes. This is why choosing a good library to do it is key. The .NET framework includes the System. Drawing namespace that provides all basic functionality needed for generating images. You can easily draw 2D text, 2D graphics, and apply image or video processing filters. Developers around the world need to create images for different purposes. Creating an image can be a lengthy process, and you may have to do it multiple times in your project. By leveraging the right image generation library, developers can save a lot of time when it comes to implementing image generation. Check out the list of free, open source 9 best C# image generator libraries to help you with your projects:

HTML-Rendererby ArthurHub

C# doticonstar image 1170 doticonVersion:1.4.14.0doticon
License: Permissive (BSD-3-Clause)

Cross framework (WinForms/WPF/PDF/Metro/Mono/etc.), Multipurpose (UI Controls / Image generation / PDF generation / etc.), 100% managed (C#), High performance HTML Rendering library.

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            HTML-Rendererby ArthurHub

            C# doticon star image 1170 doticonVersion:1.4.14.0doticon License: Permissive (BSD-3-Clause)

            Cross framework (WinForms/WPF/PDF/Metro/Mono/etc.), Multipurpose (UI Controls / Image generation / PDF generation / etc.), 100% managed (C#), High performance HTML Rendering library.
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                      barcodelibby barnhill

                      C# doticonstar image 625 doticonVersion:3.0.0doticon
                      License: Permissive (Apache-2.0)

                      C# Barcode Image Generation Library

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                                barcodelibby barnhill

                                C# doticon star image 625 doticonVersion:3.0.0doticon License: Permissive (Apache-2.0)

                                C# Barcode Image Generation Library
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                                          PixelArtTileNormalMapGeneratorby AliTsuki

                                          C# doticonstar image 10 doticonVersion:v1.0.1adoticon
                                          License: Permissive (MIT)

                                          Pixel-Art Tile Normal Map Image Generator (C#, Winforms)

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                                                    PixelArtTileNormalMapGeneratorby AliTsuki

                                                    C# doticon star image 10 doticonVersion:v1.0.1adoticon License: Permissive (MIT)

                                                    Pixel-Art Tile Normal Map Image Generator (C#, Winforms)
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                                                              NgenWrapperby slavagu

                                                              C# doticonstar image 7 doticonVersion:Currentdoticon
                                                              License: Permissive (MIT)

                                                              Managed wrapper for Ngen.exe (Native Image Generator) to control ngening progress in custom installers.

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                                                                        NgenWrapperby slavagu

                                                                        C# doticon star image 7 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                        Managed wrapper for Ngen.exe (Native Image Generator) to control ngening progress in custom installers.
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                                                                                  BadMedicine.Dicomby HicServices

                                                                                  C# doticonstar image 7 doticonVersion:v0.0.11doticon
                                                                                  License: Strong Copyleft (GPL-3.0)

                                                                                  CLI / Library for generating dicom files for use in testing applications. Images generated have 'realistic' tag data (based on aggregated tag data in dicom images taken in Scotland).

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                                                                                            BadMedicine.Dicomby HicServices

                                                                                            C# doticon star image 7 doticonVersion:v0.0.11doticon License: Strong Copyleft (GPL-3.0)

                                                                                            CLI / Library for generating dicom files for use in testing applications. Images generated have 'realistic' tag data (based on aggregated tag data in dicom images taken in Scotland).
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                                                                                                      GabrielaImageGenAssetsby LorittaBot

                                                                                                      C# doticonstar image 4 doticonVersion:Currentdoticon
                                                                                                      License: Strong Copyleft (CC-BY-SA-4.0)

                                                                                                      🖼️ Assets for Gabriela's Image Generator

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                                                                                                                GabrielaImageGenAssetsby LorittaBot

                                                                                                                C# doticon star image 4 doticonVersion:Currentdoticon License: Strong Copyleft (CC-BY-SA-4.0)

                                                                                                                🖼️ Assets for Gabriela's Image Generator
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                                                                                                                          ImageGeneratorby Mijyuoon

                                                                                                                          C# doticonstar image 2 doticonVersion:Currentdoticon
                                                                                                                          License: Permissive (MIT)

                                                                                                                          Programmable image generator

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                                                                                                                                    ImageGeneratorby Mijyuoon

                                                                                                                                    C# doticon star image 2 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                    Programmable image generator
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                                                                                                                                              Fllrby maccettura

                                                                                                                                              C# doticonstar image 0 doticonVersion:Currentdoticon
                                                                                                                                              License: Permissive (MIT)

                                                                                                                                              FPO image generation for web developers

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                                                                                                                                                        Fllrby maccettura

                                                                                                                                                        C# doticon star image 0 doticonVersion:Currentdoticon License: Permissive (MIT)

                                                                                                                                                        FPO image generation for web developers
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                                                                                                                                                                  LunaUIby InariAimu

                                                                                                                                                                  C# doticonstar image 0 doticonVersion:v0.1.0-alphadoticon
                                                                                                                                                                  License: Strong Copyleft (GPL-3.0)

                                                                                                                                                                  A structured image generator for your bots with an editor.

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                                                                                                                                                                            LunaUIby InariAimu

                                                                                                                                                                            C# doticon star image 0 doticonVersion:v0.1.0-alphadoticon License: Strong Copyleft (GPL-3.0)

                                                                                                                                                                            A structured image generator for your bots with an editor.
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