Free Online OST to HTML Converter

Convert OST to HTML online from any device, with a modern browser like Chrome, Firefox.

Aspose.Email Conversion

  • Supported Documents: OST
  • Save as: EML, MSG, PST, OST, MBOX, HTML, MHT, JPG, PNG, SVG, BMP, TIFF

OSTOutlook Offline Storage File

OST or Offline Storage Files represent user's mailbox data in offline mode on local machine upon registration with Exchange Server using Microsoft Outlook. It is automatically created on the first use of Microsoft Outlook upon connectivity with server. Once the file is created, the data is synchronized with the email server so that it is available offline as well in case of disconnectivity from email server.

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HTMLHyper Text Markup Language

HTML (Hyper Text Markup Language) is the extension for web pages created for display in browsers. Known as language of the web, HTML has evolved with requirements of new information requirements to be displayed as part of web pages. The latest variant is known as HTML 5 that gives a lot of flexibility for working with the language. HTML pages are either received from server, where these are hosted, or can be loaded from local system as well.

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How to convert a file using Aspose.Email Conversion App

  • Click inside the file drop area to upload a OST file or drag & drop a OST file.
  • Your OST file will be uploaded and will be converted to HTML format.
  • Download link of HTML file will be available instantly after conversion.
  • You can also send a link to the HTML file to your email address.
  • Note that file will be deleted from our servers after 24 hours and download links will stop working after this time period.

Fast and Easy Conversion

Upload your document, choose the save format type and click on “Convert” button. You will get the download link as soon as the file is converted.

Convert from Anywhere

It works from all platforms including Windows, Mac, Android and iOS. All files are processed on our servers. No plugin or software installation required for you.

Conversion Quality

Powered by Aspose.Email. All files are processed using Aspose APIs, which are being used by many Fortune 100 companies across 114 countries.

Other Supported Conversions

You can also convert OST into many other file formats. Please see the complete list below.