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.PAS·File Extension

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

Data & Texttext/x-pascal

Quick facts

Extension.pas

File typePAS Data & Text

MIME typetext/x-pascal

CategoryData & Text

Charset—

Compressible—

What is .pas

What is a .pas file?

A .pas file is a PAS 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/x-pascal. When serving .pas over HTTP, set the Content-Type header as shown in Developer info below.

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

How to open .pas files

Use VS Code or Notepad++ to open and edit .pas 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/x-pascal

Common software that reads/writes .pas:

VS CodeNotepad++Sublime Textjq

Relation chain

.pasextension of

format

PAS Data & Textserved as

mime type

text/x-pascalsent via header

http header

Related extensions

Related MIME types

Related programming languages

Pascal

.pas .dfm .dpr

Common uses

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

How to edit .pas 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 .pas files

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

Frequently asked questions

What programs can open .pas 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 .pas file?

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

What is the relationship between .pas and the text/x-pascal MIME type?

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

Sources & standards

Updated 2026-09-13

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