ami

.amiAmiga IFF Bitmap

Commodore · 1985

Developer
Commodore
Category
Images
MIME Type
image/x-iff
First Released
1985
Open Format
Yes
File Signature
FORM
At a Glance
.ami
Amiga IFF Bitmap

.ami files are legacy bitmap image files primarily used on older Commodore Amiga computers, often containing graphics for games and applications.

Reviewed on June 18, 2026
Compression
Compressed (ILBM)
Transparency
Limited
Editability
Medium
Best for
Amiga graphics

Key Features

  • Flexible container for various data types.
  • Supports multiple color depths and resolutions.
  • Incorporates image-specific headers (BMHD).
  • Can utilize various compression methods.

Best For

  • Preserving original Amiga game assets.
  • Retro computing enthusiasts.
  • Archiving graphics from the early Amiga era.

Less Ideal For

  • Web use due to limited browser support.
  • High-quality print graphics.
  • Modern digital photography.
  • Sharing across diverse operating systems without conversion.

Common Use Cases

  • Storing graphics for Amiga video games.
  • Creating icons and interface elements for Amiga applications.
  • Archiving early digital artwork from the Amiga platform.
  • Representing simple bitmap images for digital content.

How to Open It

  1. Use image editing software that supports IFF/ILBM, such as GIMP or IrfanView on modern operating systems.
  2. Amiga emulators like UAE (Universal Amiga Emulator) can often open these files within their native environment.
  3. Online converters can sometimes convert .ami files to more common formats like PNG or BMP.

What is a .ami file?

The .ami file extension is associated with the Interchange File Format (IFF), a flexible container developed by Electronic Arts for the Commodore Amiga computer. IFF was designed to store various types of data, but it's most commonly recognized for its use in storing bitmap images. These images could include graphics for games, applications, or general desktop use on the Amiga. While it was a groundbreaking format for its time, offering features like color palettes and different compression methods, it has largely been superseded by more modern image formats.

Programs That Open .ami Files

PlatformProgram
WindowsIrfanViewFree
GIMPFree
macOSGIMPFree
LinuxGIMPFree
Web BrowserOnline converters (e.g., Convertio, Zamzar)Free

How to Convert .ami Files

FormatMethod
.PNGGIMP, IrfanView, Online converters
.BMPIrfanView, Online converters

Common Problems with .ami Files

⚠️ Files not opening in standard image viewers.
Use specialized software like GIMP or IrfanView, or an Amiga emulator.
⚠️ Color palette issues or incorrect colors displayed.
Ensure the software correctly interprets the IFF color map information; some older or niche viewers might struggle.

Frequently Asked Questions

What is the IFF format?

IFF (Interchange File Format) is a flexible container format developed by Electronic Arts, widely used on Commodore Amiga computers to store various data types, including images (ILBM).

Is .ami a common image format today?

No, .ami is a legacy format primarily associated with the Amiga computer and is rarely used for new projects today.

Can I use .ami files on my modern computer?

Yes, with appropriate software like GIMP, IrfanView, or an Amiga emulator, you can often view and convert .ami image files.

Technical Details

IFF is a container format, meaning it can hold various data chunks. For images, the 'BMHD' (Bitmap Header) chunk defines image properties, and 'BODY' contains the pixel data. It supports different color depths, resolutions, and can utilize compression algorithms like ILBM (Interleaved Bitmap) compression, which is a form of run-length encoding.

Did You Know?

The IFF format was inspired by Autodesk's Interchange File Format (RIFF) and has a similar structure.
The '.ami' extension itself is not strictly defined by the IFF specification, with '.ilbm' and '.lbm' being more common for images.

Security Information

Like most image files, .ami files are generally safe, but always exercise caution when opening files from unknown or untrusted sources, as malicious code could theoretically be embedded if the viewing application has vulnerabilities.