VintaSoft Annotation .NET Plug-in

Draw image annotations onto TIFF, PNG, JPEG, DICOM and PDFs in .NET, WPF and ASP.NET

Image annotations are used to markup and draw various objects onto an image or document. This is very effective for office document workflow systems, medical recording systems, database systems and other systems for automatization of work with electronic image documents.

VintaSoft Annotation .NET Plug-in is the add-on for VintaSoft Imaging .NET SDK, which allows to annotate TIFF, PNG, JPEG, DICOM images and PDF documents.

General features

  • Load VintaSoft annotations (XMP or binary) from TIFF, PNG or JPEG file
  • Load WANG annotations from TIFF file
  • Load VintaSoft annotations (XMP or binary) from PDF document
  • Load DICOM annotations from DICOM presentation state file - VintaSoft DICOM .NET Plug-in is necessary
  • Load VintaSoft annotations (XMP, binary or JSON), which are stored in a separate file
  • Load custom annotations from a separate file - architecture is open
  • Add or insert an annotation into annotation collection
  • Reorder annotations in annotation collection
  • Remove an annotation from annotation collection
  • Group/ungroup annotations
  • Work with group of annotations the way you work with single annotation
  • Undo/redo changes in annotation collection
  • Supported built-in standard annotations:
    • Line - draws a line
    • Polyline - draws a polyline
    • Freehand - draws a freehand line
    • Ruler - draws line and calculates its length
    • Rulers - draws a polyline and calculates its overall length
    • Angle - draws two lines and calculates the angle between them
    • Rectangle - draws a rectangle
    • Square (rectangle with symmetry) - draws a square
    • Highlight - draws a rectangle with color blending function
    • Ellipse - draws an ellipse
    • Circle (ellipse with symmetry) - draws a circle
    • Polygon - draws a polygon
    • Polygon with cloud style - draws a cloud
    • Freehand polygon - draws a freehand polygon
    • Freehand polygon with cloud style - draws a freehand cloud
    • Embedded image - draws an image from internal source
    • Referenced image - draws an image from external source
    • Text - draws a text
    • Free text - draws an editable text area with associated leader polyline
    • Link - draws a hyperlink
    • Rubber stamp - draws a rubber stamp
    • Composite - annotation that defines a set of annotations, anyhow connected with each other
    • Group - defines a group of annotations with abilities to relocate, resize and rotate the whole group
    • Sticky note - draws a sticky note
    • Leader line - draws a leader line which links two other annotations
    • Arrow - draws a wider arrow
    • Office - draws a page of DOCX document - VintaSoft Office .NET Plug-in is necessary
  • Customize built-in annotation - architecture is open
  • Create custom annotation - architecture is open
  • Move, resize, rotate and mirror annotation
  • Prevent annotation moving, rotation, resizing or mirroring
  • Manage the visibility of annotation
  • Change the background color and transparency of annotation
  • Change the outline of annotation
  • Use caps for line based annotations
  • Create symmetrical annotation
  • Use 23 color blending modes in the Нighlight annotation
  • Undo/redo changes in annotation
  • Add and remove comment or reply
  • Create comment threads
  • Set state for comment or reply
  • Display comments on image viewer or in application interface
  • HTML5 annotation viewer, which allows to view, add, delete, and edit annotations on image or PDF document
  • Display image annotations in View (read only) or Author (read-write) mode
  • Zoom image with annotations
  • Build annotation on image
  • Transform (move, resize, rotate) annotation on image
  • Reorder annotations on image
  • Move annotation between images
  • Remove annotations from image
  • Edit text of text based annotation
  • Measure length of object on image using the Ruler annotation
  • Measure angle between objects on image using the Angle annotation
  • Create custom web annotation
  • Save VintaSoft annotations (XMP or binary) into TIFF, JPEG or PNG file
    • Annotations will be visible in VintaSoft image viewer only
  • Save WANG annotations into TIFF file
    • Annotations will be visible in VintaSoft image viewer and in any WANG compatible image viewer
  • Save VintaSoft annotations (XMP or binary) with PDF annotation appearances into PDF document
  • Save VintaSoft annotations (XMP or binary) without PDF annotation appearances into PDF document
    • Annotations will be visible in VintaSoft image viewer only
  • Save DICOM annotations into DICOM presentation state file
  • Save VintaSoft annotations (XMP, binary or JSON) into a separate file

Development and Deployment requirements

Development requirements:
  • Development environments: Microsoft Visual Studio, Microsoft Studio Code, JetBrains Rider, .NET CLI
  • Programming languages: C#, VB.NET, any .NET compatible language
  • Development platform: .NET, WinForms, WPF, ASP.NET
Deployment requirements:
  • Windows (Windows 11/10/8.1/8/7; Windows Server 2019/2016/2012/2008) with .NET 8, .NET 7, .NET 6
  • Windows (Windows 11/10/8.1/8/7/Vista/XP; Windows Server 2019/2016/2012/2008) with .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5
  • Linux (Ubuntu 23/22/20/18; Debian 12/11/10; Fedora 39/38/37/36; OpenSUSE 15; CentOS 9/8/7; Redhate Enterprise Linux 9/8/7; Alpine 3) with .NET 8, .NET 7, .NET 6
  • macOS (macOS 14/13/12/11/10) with .NET 8, .NET 7, .NET 6

Free Evaluation Version

The evaluation version allows you to test the VintaSoft Imaging .NET SDK with Plug-ins features for free during 30 days trial period and determine if the SDK functionality suits your needs in practice.
Also the evaluation version has some functional restrictions. You have to acquire a license if you want to use the SDK without evaluation restrictions.

Downloading the evaluation version of VintaSoft Imaging .NET SDK enables you to try out all Plug-ins -
Annotation, PDF, Office, OCR, DICOM, JBIG2, JPEG2000, Document Cleanup, Forms Processing.

Download Evaluation Version

Demo applications

The SDK comes with demo applications for WPF, WinForms, console, ASP.NET Core (ASP.NET Core Web API + JavaScript + Bootstrap), ASP.NET Core with Angular (ASP.NET Core Web API + TypeScript + Bootstrap), ASP.NET MVC5 (ASP.NET Web API 2 + JavaScript + jQuery UI) and ASP.NET WebForms (ASP.NET HTTP handlers + JavaScript + jQuery UI), which are demonstrating the general SDK features. The demo applications simplify the process of SDK functionality evaluation allowing quickly determine whether it suits your specific requirements.

Each demo application comes as source code example written in C# or VB.NET for use in Microsoft Visual Studio, Microsoft Studio Code, .NET CLI.

You have to download and install the SDK evaluation version to your computer if you want to run and test our demo applications.

Existing license holders can use the source code examples of demo applications as templates for their own applications.

On-line demo applications

If your goal is to develop an ASP.NET application and you want to make a quick review of the SDK functionality without installing it to your computer, you can do the test using our on-line web demo applications.


The SDK is delivered with detailed technical documentation file, which includes User Guide, .NET API Reference, Web API Reference (JavaScript, TypeScript and web services).
The documentation is designed for persons having at least basic knowledges and skills in programming of software applications.

The list of general release notes showing the SDK development history is available here: History

The documentation file for off-line use can be downloaded from below links:

Online doc for .NET    Online doc for WEB

The information about all available support resources can be found on our Support page.

The SDK has also a list of frequently asked questions and answers to them: F.A.Q. page.

VintaSoft products discussions in the Community Forums provide a convenient place for programmers to exchange information. Please search or post your technical questions there. VintaSoft's Customer Support Service monitors forums every workday.

Сontact us if you are unable to find necessary answer or solution in the presented support resources and technical documentation or if you want us to show you how VintaSoft products can help to fulfil your specific requirements.

Plug-in licensing

Purchase a license

Any Plug-in is the add-on for VintaSoft Imaging .NET SDK and can be used only together with the VintaSoft Imaging .NET SDK, i.e. the license for both the SDK and Plug-in is necessary if you want to use any Plug-in function in your application.

VintaSoft licensing is very flexible and allows the development of applications for both royalty free distribution and for deployment to a local server machine.

For using the VintaSoft Imaging .NET SDK and Plug-ins in production is necessary to choose and acquire the right license for your application from a few offered types.

Developer licenses are intended for use by a named developer. Site licenses allow to use the SDK by a group of developers working at the same office.

The licenses for Desktop PCs allow to use the SDK in your applications and distribute them royalty free to any desktop computer.

The licenses for Servers allow to use the SDK in your applications and distribute them royalty free to servers.

Single Server license is issued for an invariable network configuration of dedicated server machine.

All you need to know about the VintaSoft Imaging .NET SDK and Plug-ins licensing you can read in the License agreement.


All testimonials
As manager of the team using your Document Imaging SDK within AG Insurance, I would like to take the time to thank you about the support provided until now. Your support is effective and we are happy about your reaction time when issues questions are reported.

Olivier Van Pevenaeyge
AG Insurance
I have used Vintasoft’s libraries for the past five years and credit them for delivering high-valued software that is well priced and functionally robust. Vintasoft’s components are well designed and they consistently release updates that improve reliability and performance. I highly recommend developers to consider the Vintasoft tools as a natural plug-in for any project you tackle.

Paul Smietan
CTO | GoScan, Inc.
Because of the quality of your products and, even more, because of your quick and effective technical support I would recommend your .NET products to anyone. We are using Scan, Imaging and Annotation in few of our products, for over one year, without any problems. Please continue with good work!

Ninoslav Rasinec
RAVERUS d.o.o.
I have used many different Imaging products. Hands down you have the best product out of the bunch. I love the fact it is extendable - it works fast and it just works. Keep up the fantastic work.

Steve Thompson
Electrical Resources, Inc