76 supported file extensions in one viewer

Doconut Features

A comprehensive list of capabilities, technical specs, and use cases.

Supported Formats

Browse every file family Doconut can render.

The list below is generated from the same release catalog that gates the Doconut runtime, so every published extension maps to a live viewer family.

PDFDOCXXLSXPPTXDWGMSGPNGSVG

76

supported formats

The exact extension count published by the current .NET 8 and .NET 6 catalogs.

19

organized categories

The complete runtime-backed family catalog covering Office, PDF, CAD, email, images, DICOM, and more.

Web-first

browser viewing experience

Consistent viewing across browsers without asking users to install native desktop tools.

Categorized Support

Find formats by the way your users think about files.

Each family below comes directly from the current runtime catalog, with the complete extension list shown in place.

1 formats

PDF

Adobe Portable Document Format, including password-protected files.

PDF
10 formats

Word documents

Microsoft Word documents, macro-enabled files, templates, OpenDocument text and rich text.

DOCDOCXDOCMDOTDOTXDOTMRTFODTOTTXML
8 formats

Excel spreadsheets

Microsoft Excel workbooks, macro-enabled and binary workbooks, templates, OpenDocument spreadsheets and CSV.

XLSXLSXXLSMXLSBXLTXXLTMODSCSV
9 formats

PowerPoint presentations

Microsoft PowerPoint presentations, slide shows, templates and OpenDocument presentations.

PPTPPTXPPTMPPSXPPSMPOTPOTXPOTMODP
9 formats

Visio diagrams

Microsoft Visio drawings, stencils and templates in both binary and XML formats.

VSDVSDXVSSVSSXVSTVSTXVDXVSXVSDM
2 formats

Microsoft Project

Project plans and exchange files, rendered as timeline or sheet views.

MPPMPX
2 formats

CAD drawings

AutoCAD drawings and drawing exchange files, with layout and layer control.

DWGDXF
1 formats

MicroStation design

MicroStation DGN design files.

DGN
3 formats

Email messages

Outlook and MIME email messages, including headers and attachments.

EMLEMLXMSG
18 formats

Images

Common raster and vector image formats, including camera raw, metafiles and modern web formats.

JPGJPEGJPEPNGBMPGIFICOEPSTGAWEBPCDRCMXDNGEMFWMFAVIFSVGJP2
2 formats

TIFF images

Single-page and multi-page TIFF images, each page rendered separately.

TIFTIFF
1 formats

Photoshop

Adobe Photoshop documents, rendered as a flattened composite.

PSD
2 formats

DICOM medical imaging

Medical imaging studies, including multi-frame series. Requires the DICOM plugin.

DCMIMA
1 formats

EPUB eBooks

EPUB electronic publications, paginated for the viewer.

EPUB
1 formats

XPS documents

XML Paper Specification documents.

XPS
2 formats

HTML

HTML pages rendered to paginated output.

HTMLHTM
2 formats

MHTML web archives

Single-file web archives with embedded resources.

MHTMHTML
1 formats

Plain text

Plain text files with configurable encoding and paper size.

TXT
1 formats

Doconut package

Doconut's own pre-rendered document package, produced by distributed publishing so pages can be served without re-rendering.

DCN

Core Value

Key Capabilities

View DOC, DOCX, and ODT files directly in the browser.
Open XLS, XLSX, ODS, and CSV files without desktop spreadsheet software.
Render PPT, PPTX, and ODP presentations without Microsoft Office installed.
Display PDF, TIFF, XPS, and common image formats in web-based .NET apps.
View Microsoft Project, Visio, CAD, and PSD files in one viewer.
Add annotations for collaboration, quality checks, and versioning.
Search within documents across the text layer of PDF and Office files.
Print documents directly from the browser.
Export supported documents to Acrobat PDF.

Developer Fit

Technical Specifications

Native .NET code for C# and VB.NET applications.
Works with .NET Framework 4.7+, .NET Core 2.0+, and .NET 6 and higher.
Uses HTML5 and jQuery.
Single DLL server control that also works on shared hosting.
No installations required, with simple web integration.
Many sample projects for different platforms and frameworks.
Full documentation and integration guidance included.

Applications & Use Cases

Built for teams that need document visibility inside portals, workflows, regulated environments, and client-facing systems.

Common across DMS, CRM, legal, healthcare, e-learning, and cloud document platforms
Document management systems (DMS) viewer.
Customer relationship management (CRM) applications.
Work flow applications.
Medical, legal and e-Learning solutions.
Audit management systems.
Recruitment agencies (HR), for viewing candidate CVs.
Claims processing systems.
Quality management systems.
Clinical trial management.
Supplier management systems.
Specification management systems.
Document viewing or sharing services.
Community Websites
SharePoint portals.
View using mobile devices like Android, iPhone, iPad etc.
Acrobat Pdf, Microsoft Office, online document redaction / annotations.
Scalable Enterprise Cloud Document Viewing.
Export documents to Amazon AWS S3 EFS, Google Cloud Storage, Azure File Storage and more.
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