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.OTH·File Extension

OTH DocumentA .oth file is a OTH Document. It is a document format used for word processing, spreadsheets, presentations or ebooks.

Extension.oth
File typeOTH Document
CategoryDocument
Charset
Compressible

What is a .oth file?

A .oth file is a OTH Document. It is a document format used for word processing, spreadsheets, presentations or ebooks.

In the mime-db registry it maps to application/vnd.oasis.opendocument.text-web. When serving .oth over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to application/vnd.oasis.opendocument.text-web — and is delivered over HTTP via the Content-Type header.

  • Use Microsoft 365 or LibreOffice to open and edit .oth files.
  • Any text editor (Notepad, VS Code) can inspect the raw content as text.

When served over HTTP, responses should set the following header:

Content-Type: application/vnd.oasis.opendocument.text-web

Common software that reads/writes .oth:

Microsoft 365LibreOfficeAdobe AcrobatGoogle Docs
.othextension of
format
OTH Documentserved as
mime type
application/vnd.oasis.opendocument.text-websent via header
http header
  • Reports and letters
  • Spreadsheets and budgets
  • Presentations
  • Ebooks
  • Open the file with Microsoft 365, make your changes and save.
  • Most editors preserve the original formatting and encoding — avoid changing the charset.
  • Create a new file and save it with the .oth extension, or export this format from Microsoft 365.

What programs can open .oth files?

Common options include Microsoft 365, LibreOffice, Adobe Acrobat. You can also open many of these files with built-in viewers or a browser.

How do I create a .oth file?

Create a new file in any text editor or the app that owns the format and save it with the .oth extension.

What is the relationship between .oth and the application/vnd.oasis.opendocument.text-web MIME type?

application/vnd.oasis.opendocument.text-web is the media type identifier used for .oth files during network transfer (for example in the HTTP Content-Type header).

Updated 2026-08-18

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