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.ROFF·File Extension

ROFF Data & Text — A .roff file is a ROFF Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

Data & Texttext/troff

Quick facts

Extension.roff

File typeROFF Data & Text

MIME typetext/troff

CategoryData & Text

Charset—

Compressible—

What is .roff

What is a .roff file?

A .roff file is a ROFF Data & Text. It is a text-based data format widely used for configuration files, data interchange and API payloads.

In the mime-db registry it maps to text/troff. When serving .roff over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to text/troff and is used by Roff among others — and is delivered over HTTP via the Content-Type header.

How to open .roff files

Use VS Code or Notepad++ to open and edit .roff files.
Any text editor (Notepad, VS Code) can inspect the raw content as text.

Developer info

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

Content-Type: text/troff

Common software that reads/writes .roff:

VS CodeNotepad++Sublime Textjq

Relation chain

.roffextension of

format

ROFF Data & Textserved as

mime type

text/troffsent via header

http header

Related extensions

Related MIME types

Related programming languages

Roff

.roff .1 .1in

Common uses

Configuration files
Data interchange between systems
API request and response payloads
Logs and data exports

How to edit .roff files

Open the file with VS Code, make your changes and save.
Most editors preserve the original formatting and encoding — avoid changing the charset.

How to create .roff files

Create a new file and save it with the .roff extension, or export this format from VS Code.

Frequently asked questions

What programs can open .roff files?

Common options include VS Code, Notepad++, Sublime Text. You can also open many of these files with built-in viewers or a browser.

How do I create a .roff file?

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

What is the relationship between .roff and the text/troff MIME type?

text/troff is the media type identifier used for .roff files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-09-13

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