aseprite

.asepriteAseprite Sprite File

David Capello (Aseprite) · 2014

Developer
David Capello (Aseprite)
Category
Images
MIME Type
image/x-aseprite
First Released
2014
Open Format
No
File Signature
Not publicly documented or consistently present in a simple hex string, as it's application-specific binary data.
At a Glance
.aseprite
Aseprite Sprite File

The .aseprite file format is the proprietary file type used by the Aseprite pixel art editor to save animated sprites and all their associated editing data.

Reviewed on July 7, 2026
Compression
Binary / Compressed
Transparency
Yes
Editability
High
Best for
Animated Pixel Art

Key Features

  • Stores all animation frames within a single file.
  • Preserves layer information and transparency settings.
  • Includes color palette data and onion skinning previews.
  • Designed for efficient editing and iteration of pixel art.

Best For

  • Saving and editing pixel art animations within Aseprite.
  • Maintaining all project data for future revisions.
  • Creating character sprites and animations for indie games.
  • Collaborating on pixel art projects where Aseprite is the primary tool.

Less Ideal For

  • Sharing final, static images with non-Aseprite users.
  • Creating web banners or simple static graphics.
  • Archiving large collections of individual frames.
  • Use in applications that do not directly support Aseprite files.

Common Use Cases

  • Saving ongoing pixel art animation projects.
  • Storing individual animated sprites for game development.
  • Archiving complex pixel art compositions with multiple layers.
  • Exporting sequences for use in game engines like Unity or Godot.

How to Open It

  1. Open the .aseprite file directly within the Aseprite application.
  2. If Aseprite is installed, double-clicking the file in your file explorer should launch Aseprite and open the file.
  3. You can also use Aseprite's 'File' > 'Open' menu option to browse and select your .aseprite file.
  4. While not for editing, some image viewers might offer a preview, but full functionality requires Aseprite.

What is a .aseprite file?

The .aseprite file format is the native format for the Aseprite pixel art editor. It's specifically designed to store all the data needed for creating animated sprites, including individual frames, layers, color palettes, and onion skinning information. This format ensures that all your project's details are preserved, making it easy to revisit and continue working on your animations. Unlike static image formats, .aseprite files encapsulate the entire editing history and creative intent, making them invaluable for game development and animation projects.

Programs That Open .aseprite Files

PlatformProgram
WindowsAsepritePaidOfficial
macOSAsepritePaidOfficial
LinuxAsepritePaidOfficial

How to Convert .aseprite Files

FormatMethod
.PNGAseprite Export, Command Line
.GIFAseprite Export, Command Line
.SPRITE SHEETAseprite Export

Common Problems with .aseprite Files

⚠️ Cannot open .aseprite file on a system without Aseprite.
You need to install Aseprite or export the content to a more universal format like PNG or GIF from within Aseprite.
⚠️ Aseprite file is larger than expected.
.aseprite files can be larger due to storing extensive animation and layer data. Consider exporting to a compressed format like GIF or a series of PNGs if file size is critical for distribution.

Frequently Asked Questions

Can I open .aseprite files with Photoshop?

No, Photoshop does not natively support opening .aseprite files. You would need to export your work from Aseprite into a format Photoshop understands, like PSD or PNG.

Is .aseprite a lossless format?

The internal format itself is effectively lossless for the data it stores. However, when exporting to formats like GIF, some data or quality may be lost depending on the export settings.

Can I edit .aseprite files on mobile?

Currently, there are no official Aseprite applications for Android or iOS that can open and edit .aseprite files. You would need to use a desktop version.

Technical Details

Aseprite files are binary files that store extensive metadata alongside pixel data. This includes information about layers, frames, color palettes (including indexed color), onion skinning settings, and undo/redo history. The format is optimized for Aseprite's workflow and can store both static images and complex frame-by-frame animations.

Did You Know?

Aseprite is developed in C++ and Lua, making it quite performant.
The name 'Aseprite' is a portmanteau of 'Ase' (a Spanish word for 'ace') and 'Sprite'.

Security Information

As a proprietary file format for a specific application, .aseprite files are generally safe. However, always download Aseprite from official sources to avoid potential malware. Files from unknown origins should be treated with caution.

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