HTM File Viewer: Open HTM Files Online

An HTM file is a web page saved to disk. The extension is a shortened spelling of HTML, kept from the years when file names allowed only three characters after the dot, and the contents of the two are identical.

Double clicking one normally starts a browser. That is fine until the page has to appear inside an application rather than in a separate window, or until the styling and pictures once saved beside it have gone missing.

GroupDocs.Viewer Cloud renders the page in the cloud and returns HTML, PDF, JPG or PNG. Readers move between pages, zoom in on small detail, and open a page from thumbnails. A file carrying a password opens once that password is supplied.

The same REST API reaches more than 180 formats, so a .NET application built around it also shows spreadsheets, drawings and mail messages through the code path first written for HTM.


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

HTM File Viewer: Open HTM Files Online

View HTM and other Popular Formats for Free

RSTXLTMVBVCFVSDSCRIPTPNGXLSTGAPSXPSDWFCF2TIFFICOASMFODGJPCEMZDNGCSSDIFFSVGZONECHMBATGROOVYVSTMDJVUMHTMLMSGCGMODPJAVAHAMLAS3XLTWMFPLTTGZTXTZIPDOCSXCSASSRAREPUBVSDXVSTXSQLVSSXVSSDIBFODSOTTPLNSFCMAKEMMDXFPROPERTIESHTMLCSHHNUMBERSJSONGZTIFXLTXDOCMEMFOTSSMLCCXLSXOBJOXPSDOTMTAR.GZXMLJLSMPPDOTDWTPPSXSCALAWEBPPCLDGNODGSTLSVGSHPOTXEPSBZ2POTMTEXPSDJPMMOBIJPFPPTXDOCXXLSMRBPPSCPPOSTOTGOTPPSBJP2YAMLVSDMCMXJPEGWMZDWGTXZ7ZLOGPPTMCDRTSVPPTMBOXLESSFODPHPGPOTMCXXRTFJ2KXZMHTODTTAR.XZDOTXVDXODSGIFMPTVSXCDCMSCMPPSMPDFPSM1TARPHPMDAIIGSEMLEMLXPSTIFCJPXHXLAMGZIPMPXVDWJPGCSVVSSMASBMP

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

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.

How can I render Word, Excel, or PDF documents in a .NET application using GroupDocs.Viewer Cloud?

To render files like Word, Excel or PDF in a .NET app using GroupDocs.Viewer Cloud, you simply upload your document to the cloud and call the “ViewDocument” API method. You can retrieve the document as HTML, PDF, or image previews using the official .NET SDK.

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.

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 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.

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 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.

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.

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.

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.

How do I open an HTM file?

Any web browser displays one, because HTM and HTML describe the same thing. To show the page inside your own software instead, send it to GroupDocs.Viewer Cloud and take it back as HTML, as PDF, or as an image.

What is the difference between HTM and HTML?

There is no difference in the content. The three letter spelling survives from operating systems that allowed only three characters in an extension, and browsers along with the viewer API treat both exactly the same way.

Can an HTM file be viewed as a PDF or a picture?

Yes. The rendering target belongs to the request, so one source yields HTML for a browser, PDF for distribution, or JPG and PNG for thumbnails and previews. Page navigation and zoom apply to whichever output was asked for.

Hypertext Markup Language File (HTM) Viewer REST API

Render HTM files using a single API call

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

View HTM as PDF

View HTM with its attachments

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

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

View HTM as HTML5

Rotate, reorder & watermark HTM pages

HTM REST APIs are secured and require authentication

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.

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

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.

Extract document text while rendering in image mode

Our API allows extract text from documents

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.

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.

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.

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.

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.

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.

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.

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.

Page navigation

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

Programmatically get list of supported file types.

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

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 .NET you can find out about the various document formats supported by the SDK.

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.

Printing support

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

Support and Learning Resources

View HTM using SDKs in other popular languages

  English
e2bae8eda