ODT Viewer for Android, Plus a Free Online ODT App

An ODT file is an OpenDocument Text document, the native format of LibreOffice and Apache OpenOffice and an ISO-standardized format used by many public institutions. If your Android phone has no office suite installed, the file will not open at all.

You do not have to install one. The free GroupDocs.Viewer online app opens ODT documents in any mobile browser: upload the file and read it page by page, with zoom and thumbnails for longer documents.

For Android developers, GroupDocs.Viewer Cloud provides a REST API that renders an ODT file to HTML, to a PDF page, or to a JPG or PNG image. Maven and Gradle both publish the Java SDK, and its code samples cover the common tasks, password-protected documents and rendering of selected pages among them.

The API recognizes more than 180 document formats, so ODT support arrives together with DOCX, PDF and spreadsheet viewing. Start with the free trial and explore each endpoint in the API Explorer.


  • View ODT Online via Python
  • View ODT Online via .NET
  • View ODT Online via cURL
  • View ODT Online via Java
  • View ODT Online via Ruby
  • View ODT Online via PHP
  • View ODT Online via Node.js
  • View ODT Online via Go

ODT Viewer for Android, Plus a Free Online ODT App

View ODT and other Popular Formats for Free

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How to view ODT file online

  • Select the file by clicking the ODT App or simply drag & drop a ODT file.
  • Click the Open button to upload and view ODT file.
  • That is all! You can view your ODT document online.

Frequently Asked Questions

Are there any limitations or usage restrictions with GroupDocs.Viewer Cloud?

GroupDocs.Viewer Cloud has certain usage limits depending on the subscription plan you choose. These limits may include the number of API requests, document size, or the number of concurrent connections. Its recommended to review the pricing and plans to understand the specific limitations.

What features does GroupDocs.Viewer Cloud offer?

GroupDocs.Viewer Cloud provides various features, such as zooming, paging, searching within documents, text selection, and rendering options. You can render specific pages, generate document thumbnails, or even render documents as images.

How secure is the document viewing process in GroupDocs.Viewer Cloud?

GroupDocs.Viewer Cloud ensures a secure document viewing process with data encryption, secure protocols, and adherence to data protection standards.

How do I add ODT previews to an Android application?

Take the Java SDK from Maven, upload the .odt file to cloud storage, and ask for a view of it. The service answers with HTML or with images of each page, ready to show on screen.

How can I integrate GroupDocs.Viewer Cloud into my application?

Integration is done through APIs provided by GroupDocs.Viewer Cloud. The service offers APIs for different programming languages and platforms, making it convenient for developers to incorporate document viewing capabilities into their applications or websites.

What file formats are supported by GroupDocs.Viewer Cloud APIs?

GroupDocs.Viewer Cloud APIs support a wide range of file formats including PDF, Word, Excel, and more.

What document formats does GroupDocs.Viewer Cloud support?

GroupDocs.Viewer Cloud supports a wide range of document formats, including PDF, Microsoft Word (DOC, DOCX), Excel (XLS, XLSX), PowerPoint (PPT, PPTX), images (JPEG, PNG, GIF, TIFF), and more.

Is there a limit on the number of document views I can generate using GroupDocs.Viewer Cloud APIs?

GroupDocs.Viewer Cloud APIs offer flexible limits on the number of document views based on your subscription plan. Contact GroupDocs support for more details on view limits.

I want to create my own app that can view ODT file online?

Check our Cloud SDKs at GitHub if you are looking for the source code to view ODT file format in the Cloud.

Are there SDKs available for GroupDocs.Viewer Cloud APIs?

Yes, GroupDocs provides SDKs for various programming languages to simplify the integration and utilization of Viewer Cloud APIs in your applications.

OpenDocument Text Document (ODT) Viewer REST API

View ODT as HTML5

View ODT as PDF

ODT REST APIs are secured and require authentication

Rotate, reorder & watermark ODT pages

Get ODT document information like page & attachment count as well as properties

View ODT as Images like BMP, PNG, JPEG & TIFF

View ODT and hundreds of other formats from CAD, Word, PowerPoint, Excel, Email & eBook

View ODT with its attachments

Render ODT files using a single API call

Online document viewing

Users can view documents online without the hassle of downloading them first, providing a convenient and efficient way to access and interact with document content.

Wide range of document format support

GroupDocs.Viewer Cloud APIs and FREE Apps support a variety of document formats including PDF, Microsoft Office (Word, Excel, PowerPoint), AutoCAD, image files (PNG, JPEG), and more.

Minify ODT Output Content

One of the most exciting features of our Cloud-based viewer API for ODT is its ability to minify the output content. Minification removes comments, extra white-spaces, and other unneeded characters without breaking the content structure. As a result, the page becomes smaller in size and loads faster.

Self-host ODT Cloud Viewer Free App

The GroupDocs.Viewer Cloud Container Image enables users to self-host GroupDocs.Viewer Cloud for ODT using Docker.

Free Alternative to Desktop & Mobile ODT Viewer Apps

GroupDocs.Viewer Cloud app does not need any installation or setup to view ODT. You can quickly start using the Viewer App in your browser to view any number of files per day absolutely free of charge.

Free Apps availability

Users can access and utilize FREE Apps for document viewing and annotation online, providing a convenient and cost-effective solution for accessing and interacting with document content.

Zooming functionality

The Viewer Cloud APIs provide zooming capabilities, allowing users to zoom in and out of document pages to view content in more detail or from a broader perspective.

Text selection

Users can select, copy, and paste text directly from documents, making it easy to extract and use information from the content.

Flexible Rendering of ODT Documents

GroupDocs.Viewer is a powerful document viewer REST API that allows you to display over 186 document formats in your applications. It allows rendering of ODT for the whole document, page by page or custom range of pages.

Free online ODT viewer supports over 186 file formats

The cloud-based viewer API for ODT has the ability to display different document formats quickly, with just a few lines of code. Using the SDK for Android you can find out about the various document formats supported by the SDK.

Integration capabilities

Developers can easily integrate the Viewer Cloud APIs into their applications to enable users to view documents directly within the application interface without the need to download them.

Programmatically get list of supported file types.

Use our REST API to get list of 186 supported document types.

Printing support

Users can print documents directly from the viewer, enabling them to easily generate physical copies of the document content if needed.

Show or hide document headers and footers

GroupDocs.Viewer Cloud APIs supports rendering of headers and footers.

Free Apps support show or hide document comments

API Allows to view and comments embedded inside supported documents types.

Render ODT files to remote FTP or Cloud storage

Use third-party cloud storage to save your ODT rendered files.

  • Amazon S3
  • Azure Storage
  • Google Cloud Storage
  • Google Drive
  • Dropbox
  • Box
  • FTP

GroupDocs.Viewer Cloud REST API Explorer

The easiest way to try out GroupDocs.Conversion Cloud API right away in your browser is by using GroupDocs Cloud Web API explorer, which is a collection of Swagger documentation for the GroupDocs Cloud APIs.It allows you to effortlessly interact and try out every single operation our APIs exposes.

Page navigation

The APIs offer intuitive page navigation features that allow users to navigate through document pages easily and efficiently.

Extract document text while rendering in image mode

Our API allows extract text from documents

Support and Learning Resources

Learning Resources

Product Support

Start Free Trial
Download GitHub Repository

View ODT using SDKs in other popular languages

View ODT Online via Python GroupDocs.Viewer
Cloud SDK for Python

View ODT Online via .NET GroupDocs.Viewer
Cloud SDK for .NET

View ODT Online via cURL GroupDocs.Viewer
Cloud for cURL

View ODT Online via Java GroupDocs.Viewer
Cloud SDK for Java

View ODT Online via Ruby GroupDocs.Viewer
Cloud SDK for Ruby

View ODT Online via PHP GroupDocs.Viewer
Cloud SDK for PHP

View ODT Online via Node.js GroupDocs.Viewer
Cloud SDK for Node.js

View ODT Online via Go GroupDocs.Viewer
Cloud SDK for Go

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