lookup> .psb

.PSB·File Extension

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

Data & Textapplication/vnd.3gpp.pic-bw-small

Quick facts

Extension.psb

File typePSB Data & Text

MIME typeapplication/vnd.3gpp.pic-bw-small

CategoryData & Text

Charset—

Compressible—

What is .psb

What is a .psb file?

A .psb file is a PSB 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/vnd.3gpp.pic-bw-small. When serving .psb over HTTP, set the Content-Type header as shown in Developer info below.

Related entities: it maps to application/vnd.3gpp.pic-bw-small — and is delivered over HTTP via the Content-Type header.

How to open .psb files

Use VS Code or Notepad++ to open and edit .psb 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/vnd.3gpp.pic-bw-small

Common software that reads/writes .psb:

VS CodeNotepad++Sublime Textjq

Relation chain

.psbextension of

format

PSB Data & Textserved as

mime type

application/vnd.3gpp.pic-bw-smallsent via header

http header

Related extensions

Related MIME types

application/vnd.3gpp.pic-bw-small

.psb

Common uses

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

How to edit .psb 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 .psb files

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

Frequently asked questions

What programs can open .psb 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 .psb file?

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

What is the relationship between .psb and the application/vnd.3gpp.pic-bw-small MIME type?

application/vnd.3gpp.pic-bw-small is the media type identifier used for .psb files during network transfer (for example in the HTTP Content-Type header).

Sources & standards

Updated 2026-09-13

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