lookup> .texi

.TEXI·File Extension

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

Data & Textapplication/x-texinfo

Quick facts

Extension.texi

File typeTEXI Data & Text

MIME typeapplication/x-texinfo

CategoryData & Text

Charset—

Compressible—

What is .texi

What is a .texi file?

A .texi file is a TEXI 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 application/x-texinfo. When serving .texi over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to application/x-texinfo and is used by Texinfo among others — and is delivered over HTTP via the Content-Type header.

How to open .texi files

Use VS Code or Notepad++ to open and edit .texi 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: application/x-texinfo

Common software that reads/writes .texi:

VS CodeNotepad++Sublime Textjq

Relation chain

.texiextension of

format

TEXI Data & Textserved as

mime type

application/x-texinfosent via header

http header

Related extensions

Related MIME types

application/x-texinfo

.texinfo .texi

Related programming languages

Texinfo

.texinfo .texi .txi

Common uses

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

How to edit .texi 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 .texi files

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

Frequently asked questions

What programs can open .texi 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 .texi file?

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

What is the relationship between .texi and the application/x-texinfo MIME type?

application/x-texinfo is the media type identifier used for .texi files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-08-18

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