.atm — ATM File
Microsoft · 1992
An ATM file is a raster image format, primarily used for icons and simple graphics in older Windows applications.
Key Features
- Raster image format based on pixels.
- Uncompressed, leading to direct pixel data.
- Simple structure, easy to parse.
- Primarily used for UI elements like icons and cursors.
Best For
- Simple, small icons with limited color palettes.
- Situations requiring direct pixel access.
- Compatibility with very old Windows software.
- Creating basic UI elements where file size is not a major concern.
Less Ideal For
- Photographic images due to lack of compression.
- Web use where file size is critical.
- Images requiring transparency (unless specific variations exist).
- Complex graphics with many colors and gradients.
Common Use Cases
- Storing icons for Windows applications.
- Displaying cursors and other small graphical elements.
- Used in legacy software for graphical assets.
- Basic image manipulation in older development environments.
How to Open It
- Open in image editing software like GIMP or Paint.NET.
- Use dedicated icon editing tools if available.
- Convert the file to a more common format like PNG or BMP first.
- Many file archivers might also be able to extract them if embedded.
What is a .atm file?
An ATM file is essentially a bitmap image format, often associated with older Windows applications and graphical user interfaces. It's a raster image format, meaning it stores images as a grid of pixels. While not as common today as formats like JPG or PNG, it served a purpose in early computing environments for displaying icons, cursors, and simple graphics. These files can sometimes be encountered when working with legacy software or specific development tools that still utilize this format for their assets. Understanding its nature as a bitmap is key to working with it effectively.
Programs That Open .atm Files
| Platform | Program | ||
|---|---|---|---|
| Windows | Microsoft Paint | Free | Official |
| GIMP | Free | ||
| Paint.NET | Free | ||
| macOS | GIMP | Free | |
| Preview | Free | Official | |
| Linux | GIMP | Free | |
| Kolourpaint | Free |
How to Convert .atm Files
| Format | Method |
|---|---|
| .PNG | Image editing software (GIMP, Photoshop), Online converters |
| .BMP | Image editing software, File conversion utilities |
Common Problems with .atm Files
Frequently Asked Questions
No, ATM is an older format primarily used for specific purposes in legacy Windows applications and is not widely supported or used for general image storage today.
Typically, standard ATM files do not support transparency, similar to basic BMP files. Specialized variations might exist, but it's not a common feature.
ATM files are very similar to BMP files, often being an uncompressed bitmap format. The distinction can be subtle and sometimes depends on the specific application that generated the ATM file; they are often interchangeable or variations of the same underlying technology.
Technical Details
ATM files are typically uncompressed bitmaps, similar to BMP files, and are stored as raw pixel data. They lack sophisticated compression techniques, leading to larger file sizes compared to modern image formats. The structure often includes a header describing the image dimensions and color depth, followed by the pixel data itself. Due to their uncompressed nature, they offer straightforward pixel manipulation but are not ideal for photographic images.