ToolsBear ToolsBear

BMP Compressor

Compress BMP bitmap images efficiently.

Select or drag & drop BMP images

BMP only • Up to 50MB each

Compress BMP to a Specific Size

Need to hit an exact portal limit? Choose your target size:

5KB10KB15KB20KB25KB30KB40KB50KB100KB150KB200KB300KB500KB1000KB2MB

Key Features

Compress BMP (.bmp) images without visible quality loss

Reduce bmp file size up to 80% with the HTML5 Canvas compressor

100% browser-based — BMP files never leave your device

Converts large BMP bitmaps to smaller web-friendly formats

Batch compress multiple BMP images and download as ZIP

Free, no sign-up, no watermarks, no file size limits

How to Compress a BMP Image Online

Step-by-step guide to reduce BMP file size using ToolsBear free browser-based compressor.

1

Upload your BMP image

Click Select or drag & drop and choose your BMP file.

2

Choose compression mode

Use the Quality slider for general compression, or enter a Target Size in KB for an exact file size.

3

Select output format (optional)

Optionally convert to JPEG, PNG, or WebP while compressing.

4

Compress and download

Click COMPRESS. Download the individual file or all files as a ZIP.

Frequently Asked Questions

How does the BMP compressor work?
All compression runs in your browser using the HTML5 Canvas API. Your BMP file is re-encoded at an optimised quality level — nothing is uploaded to a server.
Will my BMP image lose quality?
Some re-compression happens, but the default quality setting keeps the image visually identical for web, email and portal use. You can adjust the slider for more or less compression.
Is this BMP compressor free?
Yes. It is completely free to use online. No registration, no watermarks, and no file size limits.
Can I compress BMP images to an exact KB target?
Yes. Enter a target KB value and the binary-search algorithm will find the exact quality setting to hit it.

Related Tools

Compress Image

Reduce file size of JPG, PNG, SVG, GIFs while maintaining quality.

JPG/JPEG Compressor

Compress JPG and JPEG images without losing quality.

PNG Compressor

Compress PNG images with transparency support.

WebP Compressor

Compress WebP images for faster web loading.

GIF Compressor

Reduce GIF file size while preserving animation.

TIFF Compressor

Compress TIFF images for smaller file sizes.