HTM Viewer - Open HTM Files on Android & Online

HTM is the three-letter form of the HTML extension, inherited from systems that allowed only three characters after the dot. The files still appear everywhere: exported reports, saved emails, offline documentation and legacy websites all produce .htm pages. Android can open some of them in a browser, but local files often lose their styling, and nothing built in offers a stable, paged view inside your own app.

GroupDocs.Viewer Cloud renders HTM files server-side and returns them as HTML, PDF, JPG or PNG, so every user sees the same layout regardless of device. Your Android app gains page navigation, zoom and thumbnails through one REST integration, and can render selected pages when a document is long. Password-protected documents are supported too.

The Android SDK for Java, published on Maven and Gradle with code samples, keeps the client code short.

Anyone can also open an HTM file at no cost in the online GroupDocs.Viewer app, which is a convenient way to check an unfamiliar attachment first. Developers try the service on real files during a free trial, issuing requests from the interactive API Explorer, and the same endpoint reads 180+ other formats.


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

HTM Viewer - Open HTM Files on Android & Online

View HTM and other Popular Formats for Free

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How to view HTM file online

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

Frequently Asked Questions

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.

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.

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 is a Word document or spreadsheet rendered from Android code?

Send the document to cloud storage from your Android code, then issue a ViewDocument request through the Java SDK. The service replies with paged HTML, a PDF, or JPG and PNG images, whichever the request asked for.

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.

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.

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.

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.

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

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

Is there a difference between HTM and HTML files?

No difference in content, since HTM is simply the three-character spelling of the HTML extension. GroupDocs.Viewer Cloud treats both alike and renders either one to PDF, image or paged HTML output.

Hypertext Markup Language File (HTM) Viewer REST API

Render HTM files using a single API call

View HTM as PDF

HTM REST APIs are secured and require authentication

Rotate, reorder & watermark HTM pages

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

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

View HTM with its attachments

View HTM as HTML5

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

Page navigation

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

Free Alternative to Desktop & Mobile HTM Viewer Apps

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

Show or hide document headers and footers

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

Text selection

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

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.

Minify HTM Output Content

One of the most exciting features of our Cloud-based viewer API for HTM 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.

Flexible Rendering of HTM 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 HTM for the whole document, page by page or custom range of pages.

Self-host HTM Cloud Viewer Free App

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

Extract document text while rendering in image mode

Our API allows extract text from documents

Programmatically get list of supported file types.

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

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.

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.

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.

Free online HTM viewer supports over 186 file formats

The cloud-based viewer API for HTM 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.

Free Apps support show or hide document comments

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

Printing support

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

Render HTM files to remote FTP or Cloud storage

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

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

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.

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.

Support and Learning Resources

Learning Resources

Product Support

Start Free Trial
Download GitHub Repository

View HTM using SDKs in other popular languages

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

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

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

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

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

View HTM Online via cURL GroupDocs.Viewer
Cloud for cURL

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

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

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