PrizmDoc Viewer

You have the app.
We have the HTML5 viewer.


PrizmDoc Viewer empowers developers to provide their users with responsive file viewing without the need to download plugins or open any other applications. Via a collection of REST APIs, this HTML5 document and image viewer provides support for 100+ file types and includes services for conversion, OCR, annotation, redaction, and more.

Benefits of Our HTML5 Document Viewer

HTML5 Zero-Footprint

No client-side installs or downloads. Provides the flexibility needed to unify file types, users, browsers, and devices.

Popular Format Support

Handles 100+ proprietary and open file formats including Microsoft Office, PDF, web, email, text, image, and more.

See all supported file formats »
Multi-Level Data Protection

256-bit AES encryption and configurable user permissions add a strong measure of privacy and protection to document content.

Customizable Interface

All UI code is open-source and can be modified to reorganize menus, create custom tabs, and customize the layout or style.

Powerful REST APIs

For automated, server-side document processing including conversion, redaction, search, annotation, watermarking, and OCR.

Flexible Hosting Models

Host the PrizmDoc Server on your own infrastructure or connect to a fully managed backend on our public or private cloud.

Key Features

Explore the unique solutions and functionalities of PrizmDoc Viewer.


Load large documents in seconds rather than minutes.


Convert 100+ file types to PDF, TIFF, PNG, JPEG, or SVG.


Turn any image-based document into a searchable PDF.


Collaborate and share feedback on content.


Remove sensitive information from documents.


Electronically sign and date documents.

See What Users Have to Say

Read our reviews to see what end users think of PrizmDoc Viewer, and learn more about their experiences with our product on G2.  Read More.

PrizmDoc Viewer Use Cases

PrizmDoc Viewer is incorporated into thousands of applications installed by software integrators and enterprise organizations worldwide. 

ECM Platforms

To extend system capabilities and investment by streamlining document and image access, retrieval, viewing, and expediting.

Legaltech Solutions

To convert large collections of data into searchable, shareable libraries while keeping confidential information secure.

Fintech Solutions

To transform a wide variety of forms, loans, and portfolio information into actionable data for more efficient processes.

Learning Management Systems

To provide educators with viewing and annotation capabilities critical for student assessments and grading assignments.

Featured Case Study

TEAM Informatics

PrizmDoc Viewer enables expert enterprise content management with modern and customizable APIs.


I work with PrizmDoc Viewer on a day-to-day and week-to-week basis. It’s easy to implement, and it saved us time and effort from a development standpoint. The fact that it’s HTML5 was a big thing for us and the public documentation is very, very strong. A lot of companies say they will do it, but Accusoft has the code snippets and demos to prove it.

Brad Hickey
Head of Engineering, TEAM Informatics
Employee Thumbnail
Nick Molchanov Software Development Manager

Nick Molchanov, Software Development Manager for the PrizmDoc Viewer product group, graduated from the Moscow State University in 1998 with a degree in computer science. Nick joined Accusoft in 1999 as a software engineer for the ImageGear product and contributed over a decade of his career to help build a strong SDK product line before joining the PrizmDoc Viewer team. Nick is also a Certified ScrumMaster® and is passionate about fundamental agile principles. He has been practicing agile with his distributed teams for many years now before it became a standard for many organizations. In his spare time, Nick enjoys rock climbing, playing soccer, and spending time with his family and friends.

View Developer Resources

What’s New in PrizmDoc Viewer

Tech Specs for PrizmDoc Viewer

Supported Operating Systems

The operating systems listed below have been tested with PrizmDoc Viewer and are officially supported. If your requirements call for an environment that is not listed below, please contact us. PrizmDoc Viewer is extremely flexible and support platforms can be expanded:


  • CentOS 7
  • Red Hat Enterprise Linux  7
  • Ubuntu 18.04 LTS
  • Docker runtime on any Linux host


  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019

Supported Application Servers

You can install PrizmDoc Viewer on any application server. Customers have deployed it on IIS, JBoss, Tomcat, Apache, WebLogic, and Oracle Enterprise App Server.

System Requirements

  • Recommended 4 logical cores with 16GB RAM total
  • 1GB of free disk space for product installation (Additional storage will be required for content caching)
  • Hard drive type: SSD
  • AWS: m5.xlarge

Microsoft Office Conversion

In order to use the Microsoft Office Conversion (MSO) rendering feature on a Windows system, the following components are required to be installed and available before the installer is run:

  • Microsoft Office 2013, 2016 or 2019 Standard Edition (not included in the PrizmDoc Viewer Server distribution and licensed separately) and the corresponding Windows Updates. In the case of Microsoft Office 2019, the Windows Server 2019 with Desktop Experience is required.
  • Microsoft XPS Document Writer printer driver.
  • Ink and Handwriting Services feature from the Server Manager.

HTML5 Client – Supported Platforms & Web Browsers

The platform and web browser combinations listed below are the environments that have been tested with PrizmDoc Viewer. While we do our best to conform to existing specifications, many web browsers interpret those specifications differently. If you have a requirement to support a specific platform and web browser combination not listed below, please contact us.

We support the current version and one version previous for the following browsers:


  • Safari
  • Google Chrome


  • Android Browser
  • Google Chrome
  • Mozilla Firefox


  • Microsoft Edge
  • Google Chrome
  • Mozilla Firefox

Mac OS

  • Safari
  • Google Chrome
  • Mozilla Firefox

Third-Party Dependencies

  • jQuery 3.6.0
  • Underscore 1.13.1
  • (Full Viewer) jQuery.Hotkeys 0.8

Supported File Formats

This is a sample of our supported file types. For a complete list, please click here.

Document Formats

DOC – Microsoft Word binary files

DOCX – Microsoft Word Open XML files

XLS -Microsoft Excel binary files

XLSX – Microsoft Excel Open XML files

PPT – Microsoft PowerPoint binary files

PPTX – Microsoft PowerPoint Open XML files

RTF – Rich Text Format

CSV – Comma Separated


ODT – OpenOffice Document

ODS – OpenOffice Spreadsheet

ODP – OpenOffice Presentation

Web Formats

HTML – HTML files with embedded images

Medical Image Files

DCM – Digital Imaging and Communications in Medicine (DICOM) image

Email Formats

EML – Email (with attachments)

MSG – Email (with attachments)

Other Formats

TXT – Text

Trademarks are the property of their respective owners.

CAD formats

DGN – support for V7 and V8 DGN (including V8 XM and V8I)

DWG – version 2.5 through 2014

DXF – version 2.5 through 2014

Image Formats

TIFF – TIFF (all compression types)


JP2 – JPEG2000

GIF – Graphics Interchange Format

PNG – Portable Network Graphics

RAS – Sun Raster Image [.ras]

CAL – CALS Type 1

DIB – Device Independent Bitmap

BMP – Windows Bitmap

PSD – Adobe Photoshop

PCT – Apple Graphics



PCD – Kodak PhotoCD

WMF – Windows Metafile

EMF – Enhanced Metafile

TGA – Targa

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