---
title: Atom type
framework: QuickTime File Format
role: symbol
role_heading: Data field
path: quicktime-file-format/preview_atom/atom_type
---

# Atom type

A 32-bit integer that indicates the type of atom that contains the preview data.

## Overview

Overview Typically, this is set to 'PICT' to indicate a QuickDraw picture.

## See Also

### Atom fields

- [Size](quicktime-file-format/preview_atom/size.md)
- [Type](quicktime-file-format/preview_atom/type.md)
- [Modification date](quicktime-file-format/preview_atom/modification_date.md)
- [Version number](quicktime-file-format/preview_atom/version_number.md)
- [Atom index](quicktime-file-format/preview_atom/atom_index.md)