Java API to Render & Display Documents

Document Viewer Library to Develop Java Applications that Natively Render, View and Manipulate, Multi-Format ‎Documents Supporting 150+ File Formats.‎

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Java Viewer API

GroupDocs.Viewer for Java


GroupDocs.Viewer for Java combines a powerful set of document viewer APIs to display images and document formats in your Java applications without needing to install additional software. It natively rasterizes the documents and converts them into SVG+HTML+CSS to enhance the quality of document viewing while delivering a true-text, high-fidelity output. Using the document rendering API – quickly view PDF, HTML, XML, Microsoft Office Word, Excel worksheets, PowerPoint presentations, Outlook emails, Visio diagrams, Project, metafiles, images and various other file formats with ease and fewer programming hazards. It can also display password-protected files and allow to get document representation as HTML, image or PDF form after the rendering. Our file viewer library is quite customizable, as it allows you to display the whole ‎document, or render it partially to speed up the process. Through GroupDocs.Viewer for Java ‎API, you can view pages, specific cell range in a spreadsheet or even render an individual ‎document layer in formats, such as, PDF and CAD.

GroupDocs.Viewer for Java API allows you to ‎render documents with/without annotation or comments for supported file formats.‎ It also enables you to add custom font directories and extract basic document information such as FileType, Extension, Name, PageCount, etc.‎

GroupDocs.Viewer for Java is compatible with all Java versions and supports popular operating systems (Windows, Linux, macOS) that are capable to run Java runtime.

GroupDocs.Viewer for Java Features



Viewer for HTML, PDF, Images, Word, Excel & other Document Formats


Render AutoCAD Drawings (DWG) files to SVG format


Adjust the Background Color of the Converted File


Rasterize and Convert Documents into SVG, HTML & CSS


Get HTML, Image or PDF Representation of Documents through Rendering


Cached Versions of Documents to Make Loading Time Faster


Configure Custom Font Directories


Apply Encoding Standards to Word, Excel and Email Documents


Remotely Render Documents at FTP or Cloud Storage


Remove or Keep Annotations & Comments while Rendering


Render Document Pages as Separate HTML Pages


Render Hidden Slides and Pages & Apply Page Reorder to Rendered Document


Render Range of Pages, Specific Pages or All Pages into HTML


Render or hide document comments


Create Responsive HTML for Some Document Formats through Rendering


Reduce Resultant File Size of Rendered HTML by Excluding Fonts


Remove Comments, Extra White-Spaces etc, to Minify Output HTML & CSS


Use Coordinates of Source Document to Read the Contained Text


Show/Hide Cell Border in Excel Sheets of the Rendered Output


Render Specific Number of Rows of Each Page in an Excel Sheet


Render Model and all Non-Empty Layouts or a Particular Layout of a CAD File


Render the Items in Outlook Data Files (OST/PST) as PDF


Tile Rendering or Render by Coordinates of CAD Documents as Image, HTML or PDF


Set printing restrictions when rendering to PDF

Efficient & Reliable API for Viewing Documents ‎

GroupDocs.Viewer for Java API can be used to view, render and display documents of more than 1‎‎50 different file formats. It is done reliably and efficiently while keeping the content as well as the ‎structure of the document intact. The following example shows the level of ease with which ‎GroupDocs.Viewer for Java API renders a DOCX file as an image file using Java:‎

Render Document as PDF - Java

// Initialize Viewer
Viewer viewer = new Viewer("sample.docx");
// Create view options
PdfViewOptions viewOptions = new PdfViewOptions();
// Render file to PDF

Perform Transformations While Rendering Documents

GroupDocs.Viewer for Java API offers you various transformation options to be applied on ‎the rendered document for a more customized view and display. You can rotate pages by ‎providing the angle. You can the order of the rendered pages. Apply specific text as a watermark to ‎rendered pages or images. Through GroupDocs.Viewer for Java API, you also have the ability to ‎add custom fonts to the document being rendered.‎

Working with Email Attachments

GroupDocs.Viewer for Java API lets you fetch specific or all attachments of an email. Once you get ‎the required email attachments, you can render these attached files to images or HTML.‎

Support and Learning Resources


GroupDocs.Viewer offers individual file viewer APIs for other popular development environments as listed below: