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Black and White Bitmap Maker

World's Simplest Bitmap Tool

This is a free and fast online utility that converts a bitmap to black-and-white colors. You can use the configuration options (below) to choose the light and dark pixel colors and enable dithering to preserve more image detail. Extra options allow you to select the diffusion pattern used to distribute the two colors across the BMP. Created by graphics designers from team Browserling.

Black and White Bitmap Maker

World's Simplest Bitmap Tool

This is a free and fast online utility that converts a bitmap to black-and-white colors. You can use the configuration options (below) to choose the light and dark pixel colors and enable dithering to preserve more image detail. Extra options allow you to select the diffusion pattern used to distribute the two colors across the BMP. Created by graphics designers from team Browserling.

Tool Options

Bitmap Pixel Colors

Choose the color used for the lighter bitmap areas.
Choose the color used for the darker bitmap areas.

Pixel Dithering

Scatter light and dark pixels to preserve more image detail.
Choose how dithering pixels are distributed across the BMP.

What Is a Black and White Bitmap Maker?

This free online browser-based tool converts a bitmap to black and white colors. Unlike grayscale conversion, which keeps many gray shades, a black-and-white bitmap uses only two colors. To create it, the program checks the brightness of each source pixel and assigns it to either the light or dark color. A simple binary conversion creates solid white and black regions with sharp boundaries and a high-contrast look. To preserve more detail, you can enable dithering, which mixes light and dark pixels in patterns that simulate additional brightness levels while still using only two colors. The dithering style can be adjusted with several diffusion patterns, including Floyd-Steinberg, Atkinson, Stucki, Jarvis, Burkes, and Sierra variations. The two output colors do not have to be black and white – you can replace them with any light and dark colors to create a custom two-color BMP. If you want to keep continuous gray tones instead, use our Convert a Bitmap to Grayscale. Bmp-abulous!

What Is a Black and White Bitmap Maker?

This free online browser-based tool converts a bitmap to black and white colors. Unlike grayscale conversion, which keeps many gray shades, a black-and-white bitmap uses only two colors. To create it, the program checks the brightness of each source pixel and assigns it to either the light or dark color. A simple binary conversion creates solid white and black regions with sharp boundaries and a high-contrast look. To preserve more detail, you can enable dithering, which mixes light and dark pixels in patterns that simulate additional brightness levels while still using only two colors. The dithering style can be adjusted with several diffusion patterns, including Floyd-Steinberg, Atkinson, Stucki, Jarvis, Burkes, and Sierra variations. The two output colors do not have to be black and white – you can replace them with any light and dark colors to create a custom two-color BMP. If you want to keep continuous gray tones instead, use our Convert a Bitmap to Grayscale. Bmp-abulous!


Black and White Bitmap Maker Examples

Click to try!
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Create a Black and White Cat Portrait from a BMP

In this example, we turn a ginger cat photo into a stark black-and-white bitmap portrait. The cat's lighter fur becomes white, while the background and darker areas appear in solid black, creating a high-contrast BMP with a bold, poster-like look. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Choose the color used for the lighter bitmap areas.
Choose the color used for the darker bitmap areas.
Scatter light and dark pixels to preserve more image detail.
Choose how dithering pixels are distributed across the BMP.
click me

Generate a Detailed Black and White Bicycle Bitmap

In this example, we convert a vintage bicycle bitmap into a black-and-white bitmap using Stucki dithering. The distributed pixel pattern preserves fine details such as the wheel spokes, flower basket, wooden door texture, and uneven pavement while reducing the image to just black and white. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Choose the color used for the lighter bitmap areas.
Choose the color used for the darker bitmap areas.
Scatter light and dark pixels to preserve more image detail.
Choose how dithering pixels are distributed across the BMP.
click me

Turn a Sliced Avocado into a Two-color Bitmap

In this example, we replace the usual black-and-white bitmap colors with custom pale yellow and dark green tones chosen from the palette options. We use Sierra Lite dithering to vary the density of dark green pixels and form lighter and darker areas, preserving the shape of the avocado, its pit, peel, and shadows with only two colors. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Choose the color used for the lighter bitmap areas.
Choose the color used for the darker bitmap areas.
Scatter light and dark pixels to preserve more image detail.
Choose how dithering pixels are distributed across the BMP.

All Bitmap Tools

Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!
Quickly convert an opaque bitmap to a transparent bitmap.
Quickly substitute one color for another in a bitmap.
Quickly find all colors in a bitmap and extract them.
Quickly change the number of bits used by every BMP pixel.
Quickly turn a color bitmap into a grayscale bitmap.
Quickly change all bitmap colors to just black and white.
Quickly animate a bitmap sprite sheet.
Quickly convert an animation into a bitmap sprite sheet.
Quickly blur an area of a bitmap.
Quickly sharpen an area of a bitmap.
Quickly pixelate an area of a bitmap.
Quickly create a bitmap file from random, colorful pixels.
Quickly change the width/height of a bitmap.
Quickly select a region from a bitmap.
Quickly rotate a bitmap by any angle.
Quickly flip a bitmap image horizontally.
Quickly flip a bitmap image vertically.
Quickly add a border around or inside a bitmap.
Quickly delete a border that surrounds a bitmap.
Quickly create a byte array from a BMP image.
Quickly create a BMP image from a byte array.
Quickly convert RGB bitmap colors to BGR channel order.
Quickly convert BGR bitmap colors to RGB channel order.
Quickly create a BMP image by mapping text symbols to colored pixels.
Quickly convert a BMP file to the base-64 encoding.
Quickly convert base-64 encoding to a BMP file.
Quickly convert a bitmap image to a 32-bit BMP.
Quickly convert a bitmap image to a 24-bit BMP.
Quickly convert a bitmap image to a 16-bit BMP.
Quickly convert a bitmap image to an 8-bit BMP.
Quickly convert a bitmap image to a 4-bit BMP.
Quickly convert a bitmap image to a 1-bit BMP.

Coming Soon

These bitmap tools are on the way!
Edit and Draw Bitmaps

Create and edit bitmaps in your browser.

Compress a Bitmap

Make a bitmap smaller in size.

Uncompress a Bitmap

Convert a compressed bitmap to a raw RGB pixel bitmap.

Swirl a Bitmap

Create a swirl of any radius in a bitmap.

Merge Bitmaps

Join two or more bitmaps together.

Overlay Bitmaps

Place two or more bitmaps on top of each other.

Split a Bitmap

Split a bitmap into multiple independent bitmaps.

Extract a Bitmap Fragment

Extract one or more selected areas from a bitmap.

Duplicate a Bitmap

Make copies of bitmaps and paste them together.

Skew a Bitmap

Skew a bitmap by an arbitrary angle.

Shift a Bitmap

Shift a bitmap to the left or right.

Convert Bitmap to Webp

Convert a BMP to a Webp.

Convert Webp to Bitmap

Convert a Webp to a BMP.

Convert Bitmap to PNG

Convert a BMP to a PNG.

Convert PNG to Bitmap

Convert a PNG to a BMP

Convert Bitmap to JPEG

Convert a BMP to a JPG.

Convert JPEG to Bitmap

Convert a JPG to a BMP.

Convert Bitmap to BPG

Convert a BMP to a BPG.

Convert BPG to Bitmap

Convert a BPG to a BMP.

Convert GIF to Bitmap

Save GIF frames as BMP images.

Convert BMP to GIF

Convert a bitmap to a single-frame GIF.

Convert Bitmap to Data URI

Create a Data URL scheme of a bitmap.

Convert Data URI to Bitmap

Convert a Data URL scheme back to a bitmap image.

BitBlt Bitmaps

Bit Blit two or more BMPs.

Replace Bitmap Color Index

Put a new color table in a BMP.

Print Bitmap Color Index

Extract the color table of a BMP.

Print Raw Bitmap Pixels

Extract raw RGB pixels from a BMP and print them out as text.

Convert Raw RGB to BMP

Create a bitmap image from raw RGB pixels.

Randomize Bitmap Color Index

Randomly rearrange colors in the BMP color table.

Optimize a Bitmap

Reduce a BMP's memory footprint.

Destroy a BMP

Destroy parts of a bitmap and make it glitchy.


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Created with love by

We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling, we love to make people's lives easier, so we created this collection of online bitmap tools. Our BMP tools have the simplest possible user interface and work directly in your browser without downloads or installations. You can use them to edit bitmap images, change BMP bit depth and colors, resize bitmaps, create transparent BMPs, work with bitmap pixels and byte arrays, and much more. Behind the scenes, our bitmap tools are powered by our web developer tools that we've created over the years. Check them out!

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Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!