DotImage is a high performance and cost effective .NET imaging toolkit (SDK) that allows you to easily add viewing, scanning, converting, editing, and annotating to your desktop, mobile and web applications.  If you have any questions please let us know


DotImage® Features

HTML5 Web & Mobile Viewing

  • TIFF, PDF, DICOM, JPEG2000, JBIG2, Word, Excel, PowerPoint and more
  • Open any DotImage supported image type from any repository
  • Edit, Insert, Reorder, Remove & Rotate pages
  • Cleanup documents using binarize, deskew & despeckle
  • Controls for ASP.NET / ASP.NET MVC - See Whitepaper
  • Support for ASP.NET Core (Targeting .Net Framework) - See FAQ
  • Touch Support & Adaptive Scaling for Mobile Viewing
  • Upload files using drag & drop or selection
  • Lazy Loading allows large documents to be viewed quickly
  • Thumbnail viewer allows for pages to be easily rearranged
  • Some add-ons maybe required, see below


  • Convert a DotImage supported format to PDF
  • For additional PDF functionality see PDF Reader with Text Extraction below


  • View, burn, & edit images with annotations
  • Highlight critical information
  • Support for freehand, text box, sticky note, rubber stamp, line, lines, ellipse, rectangle and polygons
  • Support for annotating multipage TIFF documents
  • View & Author PDF Annotations
  • Print images with annotations as they appear on the document (Winforms only)
  • Burning Annotations: Creating a flattened redaction or uneditable annotation - See KB Article

Format Conversion

  • Read or write TIFF, PNG, JPEG, and many other formats
  • Read and convert from DICOM, DWG, or DXF
  • Convert from or to .NET Bitmap class
  • Single or batch file format conversions
  • Convert a PDF to another supported format - PDF Reader with Extraction required (See add-ons below)
  • Read Word, Excel & PowerPoint & convert to another format- Office Decoder required (See add-ons Below)

Image Processing

  • Functions include crop, rotate, flip, resize, or resample
  • Image clean up including complex overlays, noise addition & reduction
  • Color management & auto-leveling
  • Deskew, despeckle, border/line/hole-punch removal
  • Image clean up for downstream OCR processing

Manipulate Multi-Page Documents

  • TIFF & PDF - Support for reordering, removing, adding, replacing, & combining pages
  • Support for viewing, editing and writing multi-page documents
  • Combine multiple documents, remove blank or redacted pages
  • Split or merge multi-page documents into new documents
  • For PDF support, PDF Reader with Extraction required (See add-ons below)

Twain Desktop Scanning

  • Desktop Scanning with DotTwain - Configure and start a scan using a simple API
  • DotTwain can be purchased as a stand-alone SDK or is included within DotImage
  • Capture digital images from scanners, cameras, and other TWAIN devices
  • TWAIN compliant for 1.x and 2.x
  • Document separation using barcodes - Barcode SDK required (See add-ons below)
  • For web based scanning visit our WingScan Page

Winforms Viewing

  • .NET Desktop Viewing and Image Processing
  • WebDocumentThumbnailer Control - drag & drop, page reordering, anti-aliasing & customizable thumbnail size
  • .NET Winforms Viewing controls available with or without annotation support
  • DocumentViewer / DocumentAnnotationViewer - combined image and thumbnail viewer controls
  • WorkspaceViewer / AnnotateViewer - Image viewer controls
  • ThumbnailViewer / FolderThumbnailView - Winforms Thumbnail viewers
  • Optical Mark Recognition (scoring multiple choice paper forms)


DotImage Add-ons


PDF Reader with Text Extraction

  • PDF viewing & editing for desktop or web applications
  • Convert from PDF to another image format
  • Combine or separate PDFs & perform other page level PDF manipulations
  • Read or write PDF meta-data or bookmarks, manipulate pages of a PDF
  • View and annotate a PDF in any of our controls
  • PDF/A and password required encrypted PDFs are supported
  • In browser PDF Form Fill
  • Searchable PDF; Add an OCR engine & our Searchable PDF SDK to create a two-layer PDF

This SDK is needed if:

  • View an already created PDF
  • View a PDF created with DotImage
  • View or highlight Searchable PDF’s
  • Convert from PDF to another image format

Office Decoder

  • Decode Word, Excel, and PowerPoint documents

OCR & Searchable PDF

  • OCR documents & create searchable PDFs. Visit our OCR Page

Barcode Reading and Writing

  • Read & write both 1D and 2D barcodes, Visit our Barcode Page


  • Generate PDFs from scratch or edit existing PDFs.  Visit our DotPDF Page

We are here to help

DotImage is backed by a remarkable support team of expert .NET and imaging developers.  If you have any questions please take a look at our extensive Knowledgebase, browse our Sample Applications or create a Support Case.  For sales questions please send us an E-mail.  We also offer a 30 Day Free Evaluation with Full Support and cost effective Subscription Agreements.

Atalasoft impacted us in two ways. First, DotImage gave us the tools we needed to view and annotate images and it fit perfectly into our architecture. Second, support has been excellent. With excellent support we have been able to quickly respond to our customer’s needs.

Sr. Developer, eDiscovery & Data Processing Company