.bb — Black and White Bitmap

Various (Image processing software) · 1990s

Developer

Various (Image processing software)

Key Features

Stores only black and white pixels.
Simple, uncompressed bitmap structure.
Low color depth, suitable for basic graphics.
Easily editable with basic image software.

Best For

When only black and white is required.
Simple, high-contrast graphics.
Minimizing file complexity.
Compatibility with older or specialized software.

Less Ideal For

Photographs or complex color images.
Images requiring smooth gradients or shades.
Web use where file size is critical.
High-quality print graphics.

Common Use Cases

Creating simple logos or icons.
Representing basic line art or diagrams.
Storing monochrome text graphics.
Historical archiving of simple graphics.

How to Open It

Open with any standard image viewer or editor like Paint (Windows), Preview (macOS), or GIMP.
If the file is unrecognized, try saving it as a more common format like BMP or PNG first.
Specialized graphic design or CAD software might also support this format.

What is a .bb file?

The .bb file extension typically refers to a simple black and white bitmap image format. These images are composed solely of pixels that are either completely black or completely white, with no shades of gray or color. This makes them ideal for basic line drawings, simple icons, or text-based graphics where color is not necessary. While not as versatile as modern image formats, .bb files are straightforward and can be easily created and edited by many basic image editing tools.

Programs That Open .bb Files

Platform	Program
Windows	Microsoft Paint	Free	Official
	GIMP	Free
macOS	Preview	Free	Official
	GIMP	Free
Linux	GIMP	Free
	ImageMagick	Free

How to Convert .bb Files

Format	Method
.PNG	GIMP, ImageMagick
.BMP	Microsoft Paint, GIMP

Common Problems with .bb Files

⚠️ File is not opening in expected software.

Ensure the software supports .bb files or try converting it to a more common format like BMP or PNG using a conversion tool.

⚠️ Image appears distorted or incorrect.

This may indicate a corrupted file or an unsupported variation of the .bb format; try re-downloading or re-exporting the file.

Frequently Asked Questions

Is .bb a common image format?▼

No, .bb is not a widely used or standardized image format compared to JPG, PNG, or GIF. Its usage is niche.

Can .bb files store color?▼

No, .bb files are strictly black and white (monochrome) and cannot store color information.

Why would I use a .bb file?▼

You might use it for very simple, high-contrast graphics where color is unnecessary, or if you're working with legacy software that specifically uses this format.

Technical Details

These files store image data as a grid of pixels, where each pixel has only two possible states: black or white. The exact file structure can vary depending on the software that created it, but it generally involves header information followed by the raw pixel data. Because of its binary nature, it's not a compressed format and can result in larger file sizes for complex images compared to more advanced formats.

Did You Know?

The simplicity of .bb files means they can often be viewed as plain text, as the pixel data is essentially a series of binary values.

While 'BB' might suggest 'Black and White', the exact origin and standardization of the .bb format are not clearly documented.

Security Information

Like most image files, .bb files are generally safe. However, always exercise caution when opening files from unknown or untrusted sources, as malicious code could theoretically be embedded, though it's uncommon for simple bitmap formats.