.bi — Bitmap Image

Various · 1980s

Developer

Various

Key Features

Stores image data as a grid of pixels.
Can be uncompressed or use simple lossless compression.
Relatively simple file structure.
Supports indexed color or direct color representation.

Best For

Simple, uncompressed graphics where file size is not a primary concern.
Applications that specifically require or generate this format.
Situations where pixel-level data manipulation is paramount.

Less Ideal For

Photographs or complex images requiring high compression.
Web use due to potentially larger file sizes and limited browser support.
Animations or images needing transparency (though some variants might support it).
Sharing with a broad audience without specialized software.

Common Use Cases

Storing simple icons or graphics.
Internal image representation within specific software.
Basic image data exchange between compatible applications.
Low-resolution bitmap graphics.

How to Open It

Use image editing software like GIMP or Paint.NET, which might require a specific plugin or import option.
Try dedicated bitmap viewers or converters if available for the specific variant of .bi.
If the file is from a specific application, try opening it within that software first.

What is a .bi file?

The .bi file extension is most commonly associated with simple bitmap images. These files store image data in a grid of pixels, where each pixel's color is defined. They are straightforward image formats, often uncompressed or using basic run-length encoding for size reduction. While not as widely supported as formats like JPG or PNG, .bi files can be useful for basic graphics or in specific software applications that utilize them for their internal image representation. They are generally easy to work with for simple visual data.

Programs That Open .bi Files

Platform	Program
Windows	GIMP	Free
	Paint.NET	Free
macOS	GIMP	Free
Linux	GIMP	Free

How to Convert .bi Files

Format	Method
.PNG	GIMP, Online converters
.JPG	GIMP, Online converters

Common Problems with .bi Files

⚠️ .bi file won't open.

Ensure you are using an image editor that supports the specific .bi variant, or try converting it using an online tool. Check if the file is corrupted.

⚠️ Image quality is poor.

.bi files are often low-resolution or uncompressed bitmaps. For better quality, use formats like PNG or JPG if the original source allows.

Frequently Asked Questions

What is a .bi file?▼

A .bi file is a simple bitmap image file, typically storing pixel data without advanced features or compression.

Can I edit a .bi file?▼

Yes, you can edit .bi files with most image editing software, but compatibility might vary. The editability depends on the specific structure of the .bi file.

Is .bi a good format for the web?▼

Generally, no. .bi files are often uncompressed or use basic compression, leading to larger file sizes than optimized formats like JPG or WebP, and they lack wide browser support.

Technical Details

.bi files are typically binary files representing pixel data. The structure can vary, but they often contain header information followed by raw pixel data. Compression, if used, is usually lossless, such as run-length encoding (RLE). Some .bi files may also contain color palette information if they are indexed color images.

Did You Know?

The .bi extension is not as standardized as other image formats, meaning different software might use it for slightly different bitmap variations.

Due to its simplicity, some older or specialized graphics applications might still use .bi for internal image storage.

Security Information

As with any file, exercise caution when opening .bi files from unknown or untrusted sources, as they could potentially contain malicious code or exploit vulnerabilities in the software used to open them.