Drop file here. 150 MB maximum file size.
An OST file is a data file created by Microsoft Outlook (2005 or later), an email client and a manager; personal information. It is used to store a copy of the mailbox information; an Office 365 account, Exchange or Outlook.com. The files may contain e-mails, contacts, tasks, calendar data and other account information.
A POTM file is a presentation model for macro-created by Microsoft PowerPoint, a program used to create slide shows. There are default images, slide templates, macros and formatting. POTM files are used to create multiple files with the same formatting and macro settings.
We have 100% free online OST tools that does not required any registrations and installations on your system, here are few popular free OST tools to View, Convert, Edit, Merge, Split, Compare and manage file metadata online from any device with a modern browser like Chrome, Opera and Firefox.
Chose or drag & drop your OST file, click Convert to POTM, and download the POTM file. No registration needed.
Yes, all uploads are encrypted. Your files are auto-deleted after 24 hours.
Yes, our converter retains layout, fonts, and images as accurately as possible.
Fileproinfo converter engine works fast. You can convert OST to POTM in a few seconds to couple of minutes for large size files with complex structure.
FileProInfo support manay file formats that allow you to convert OST to 100s of file formats, without any limit, registration and downloading, 100% free and online OST converter.
All converters in this list are manually verified & 100% free and working properly, however you must use these apps according to their respective terms & conditions.
This tool and page updated at: 12-Apr-2025
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Listed file converters are from the wide range of online file converter.
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