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Transparent Bitmap Maker

World's simplest bitmap tool
This is a free and fast online utility that converts an opaque bitmap to a transparent bitmap. You can use the configuration options (below) to specify which color will be made transparent (using a color picker, a color name, or a hex color code). Extra options allow you to widen the color pickup range, clear only border-reachable BMP regions, soften the cutout edge, and inspect a black-and-white match map before saving. Created by graphics designers from team Browserling.
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A link to this tool, including input, options and all chained tools.
Click here to select an image from your device, press Ctrl+V to use an image from your clipboard, drag and drop a file from desktop, or load an image from any example below.
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Color to Match
Specify the color that you want to remove from a BMP. The removed color will change to transparent. Use color name, hex code, RGB, or click color palette.
Color Matching
Specify the fuzziness percentage from 0% to 100%. The higher the percentage, the more shades of the color will become transparent.
Clear matching BMP pixels only when a path connects them to the canvas border.
Edge Cleanup
Lightly fade pixels around the transparent area.
How many nearby pixels to soften.
Show Matching Colors
Show the matching colors that will be made transparent in black color and all opaque colors in white color.

What is a Transparent Bitmap Maker?

learn more about this tool
This free online browser-based program creates transparent areas in a bitmap image (an image with a .bmp extension). In the options, you can specify the color you want to replace with transparency, and you'll instantly see the preview of the BMP with transparent pixels in the regions that match this color. The transparent color can be entered using its name (for example "yellow" or "pink"), a hexadecimal code (for example, "#ffe100" or "#0b03ff"), an RGB code (for example, "RGB(230, 126, 34)" or "RGB(142, 68, 173)"), or selected in the color palette that can be accessed by clicking on it next to the transparency color option. If you need to match similar shades of the given color, use the fuzzy color match option. In this option, you can enter the similarity coefficient, expressed as a percentage. The higher the fuzzy percentage, the more similar color shades will become transparent. For example, with the yellow color and the fuzzy percentage set to 0%, only the yellow color will become transparent, but with the fuzzy value of 30%, besides yellow, colors like corn, lime, amber, citrine, and cream will all become transparent. When the color you want to remove also appears inside the subject, you can limit the cleanup to matching pixels that are connected to the bitmap border, leaving the same-colored interior details untouched. If the cutout looks rough or leaves a faint fringe, the border pixels around the transparent area can be softened by a chosen number of nearby pixels. The most common use cases of this tool are removing the background of bitmap sprites and creating digital signatures and stamps. For more accurate results, you can enable the preview mode. In this mode, the transparent and non-transparent colors will be shown in black and white. Bmp-abulous!

Transparent Bitmap Maker examples

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Transparent Mega Man Sprite
In this example, we load an 8-bit bitmap that contains a Mega Man sprite and strip its reddish background color. To do it, we enter the hex color "#E02040" in the transparent color field. As this is the only solid color we need to delete, we leave the fuzzy matching value at 0%.
In this example, we load an 8-bit bitmap that contains a Mega Man sprite and strip its reddish background color. To do it, we enter the hex color "#E02040" in the transparent color field. As this is the only solid color we need to delete, we leave the fuzzy matching value at 0%.
In this example, we load an 8-bit bitmap that contains a Mega Man sprite and strip its reddish background color. To do it, we enter the hex color "#E02040" in the transparent color field. As this is the only solid color we need to delete, we leave the fuzzy matching value at 0%.
Required options
These options will be used automatically if you select this example.
Specify the color that you want to remove from a BMP. The removed color will change to transparent. Use color name, hex code, RGB, or click color palette.
Specify the fuzziness percentage from 0% to 100%. The higher the percentage, the more shades of the color will become transparent.
Clear matching BMP pixels only when a path connects them to the canvas border.
Lightly fade pixels around the transparent area.
How many nearby pixels to soften.
Show the matching colors that will be made transparent in black color and all opaque colors in white color.
Make Sky Transparent
In this example, we remove the background from a BMP image of a hot air balloon. We target the bluish color of the sky and select the visually closest color with the color picker. The picker automatically enters the selected color in the color-to-match field (in RGB format). Since the color of the sky changes from light blue to blue, we increase the fuzziness threshold to 16% to match all these color tones in the background gradient. We also soften the cutout edge with a 2-pixel edge size. (Source: Pexels.)
In this example, we remove the background from a BMP image of a hot air balloon. We target the bluish color of the sky and select the visually closest color with the color picker. The picker automatically enters the selected color in the color-to-match field (in RGB format). Since the color of the sky changes from light blue to blue, we increase the fuzziness threshold to 16% to match all these color tones in the background gradient. We also soften the cutout edge with a 2-pixel edge size. (Source: Pexels.)
In this example, we remove the background from a BMP image of a hot air balloon. We target the bluish color of the sky and select the visually closest color with the color picker. The picker automatically enters the selected color in the color-to-match field (in RGB format). Since the color of the sky changes from light blue to blue, we increase the fuzziness threshold to 16% to match all these color tones in the background gradient. We also soften the cutout edge with a 2-pixel edge size. (Source: Pexels.)
Required options
These options will be used automatically if you select this example.
Specify the color that you want to remove from a BMP. The removed color will change to transparent. Use color name, hex code, RGB, or click color palette.
Specify the fuzziness percentage from 0% to 100%. The higher the percentage, the more shades of the color will become transparent.
Clear matching BMP pixels only when a path connects them to the canvas border.
Lightly fade pixels around the transparent area.
How many nearby pixels to soften.
Show the matching colors that will be made transparent in black color and all opaque colors in white color.
Remove Background of Signature
In this example, we demonstrate how to create a digital signature from a BMP image. To do it, you'll need to sign a blank sheet of paper, take a quick photo, and upload the image to the input field of this tool. To demonstrate it in action, we use Walt Disney's signature. We type "white" in the transparent color option and set the fuzzy match to 20%. These values make sure that the white background of the signature gets removed along with the gray islands of shadows. We also soften the edge with a 1-pixel edge size, leaving only the black outline of the ink, which can be inserted in electronic documents to sign them.
In this example, we demonstrate how to create a digital signature from a BMP image. To do it, you'll need to sign a blank sheet of paper, take a quick photo, and upload the image to the input field of this tool. To demonstrate it in action, we use Walt Disney's signature. We type "white" in the transparent color option and set the fuzzy match to 20%. These values make sure that the white background of the signature gets removed along with the gray islands of shadows. We also soften the edge with a 1-pixel edge size, leaving only the black outline of the ink, which can be inserted in electronic documents to sign them.
In this example, we demonstrate how to create a digital signature from a BMP image. To do it, you'll need to sign a blank sheet of paper, take a quick photo, and upload the image to the input field of this tool. To demonstrate it in action, we use Walt Disney's signature. We type "white" in the transparent color option and set the fuzzy match to 20%. These values make sure that the white background of the signature gets removed along with the gray islands of shadows. We also soften the edge with a 1-pixel edge size, leaving only the black outline of the ink, which can be inserted in electronic documents to sign them.
Required options
These options will be used automatically if you select this example.
Specify the color that you want to remove from a BMP. The removed color will change to transparent. Use color name, hex code, RGB, or click color palette.
Specify the fuzziness percentage from 0% to 100%. The higher the percentage, the more shades of the color will become transparent.
Clear matching BMP pixels only when a path connects them to the canvas border.
Lightly fade pixels around the transparent area.
How many nearby pixels to soften.
Show the matching colors that will be made transparent in black color and all opaque colors in white color.
Remove the Table, Keep the Game Pieces
In this example, we make the wooden table transparent in a BMP photo of a tic-tac-toe board game. The wooden X pieces have almost the same orange color as the table surface, so regular color removal would also erase parts of the game. To avoid that, we enable the option that clears only matching border-connected areas. With 36% color matching, the surrounding table becomes transparent, while the tic-tac-toe pieces stay visible. (Source: Vecteezy.com.)
In this example, we make the wooden table transparent in a BMP photo of a tic-tac-toe board game. The wooden X pieces have almost the same orange color as the table surface, so regular color removal would also erase parts of the game. To avoid that, we enable the option that clears only matching border-connected areas. With 36% color matching, the surrounding table becomes transparent, while the tic-tac-toe pieces stay visible. (Source: Vecteezy.com.)
In this example, we make the wooden table transparent in a BMP photo of a tic-tac-toe board game. The wooden X pieces have almost the same orange color as the table surface, so regular color removal would also erase parts of the game. To avoid that, we enable the option that clears only matching border-connected areas. With 36% color matching, the surrounding table becomes transparent, while the tic-tac-toe pieces stay visible. (Source: Vecteezy.com.)
Required options
These options will be used automatically if you select this example.
Specify the color that you want to remove from a BMP. The removed color will change to transparent. Use color name, hex code, RGB, or click color palette.
Specify the fuzziness percentage from 0% to 100%. The higher the percentage, the more shades of the color will become transparent.
Clear matching BMP pixels only when a path connects them to the canvas border.
Lightly fade pixels around the transparent area.
How many nearby pixels to soften.
Show the matching colors that will be made transparent in black color and all opaque colors in white color.
Remove Background Around Orchid
In this example, we remove a dark, uniform background from a BMP photo of a purple orchid. The flower also has small black speckles around its center, so removing every black pixel would damage the natural pattern of the orchid. We enable the border-area option, which clears only the black pixels connected to the outside of the image. We also use a 2-pixel edge size to soften the cutout, making the orchid easier to place on another background. (Source: Vecteezy.com.)
In this example, we remove a dark, uniform background from a BMP photo of a purple orchid. The flower also has small black speckles around its center, so removing every black pixel would damage the natural pattern of the orchid. We enable the border-area option, which clears only the black pixels connected to the outside of the image. We also use a 2-pixel edge size to soften the cutout, making the orchid easier to place on another background. (Source: Vecteezy.com.)
In this example, we remove a dark, uniform background from a BMP photo of a purple orchid. The flower also has small black speckles around its center, so removing every black pixel would damage the natural pattern of the orchid. We enable the border-area option, which clears only the black pixels connected to the outside of the image. We also use a 2-pixel edge size to soften the cutout, making the orchid easier to place on another background. (Source: Vecteezy.com.)
Required options
These options will be used automatically if you select this example.
Specify the color that you want to remove from a BMP. The removed color will change to transparent. Use color name, hex code, RGB, or click color palette.
Specify the fuzziness percentage from 0% to 100%. The higher the percentage, the more shades of the color will become transparent.
Clear matching BMP pixels only when a path connects them to the canvas border.
Lightly fade pixels around the transparent area.
How many nearby pixels to soften.
Show the matching colors that will be made transparent in black color and all opaque colors in white color.
All bitmap tools
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Create a Transparent Bitmap
Quickly convert an opaque bitmap to a transparent bitmap.
Change Bitmap Colors
Quickly substitute one color for another in a bitmap.
Extract Bitmap Color Palette
Quickly find all colors in a bitmap and extract them.
Convert a Bitmap to Grayscale
Quickly turn a color bitmap into a grayscale bitmap.
Blur a Bitmap
Quickly blur an area of a bitmap.
Sharpen a Bitmap
Quickly sharpen an area of a bitmap.
Pixelate a Bitmap
Quickly pixelate an area of a bitmap.
Draw a Random Bitmap
Quickly create a bitmap file from random, colorful pixels.
Resize a Bitmap
Quickly change the width/height of a bitmap.
Crop a Bitmap
Quickly select a region from a bitmap.
Rotate a Bitmap
Quickly rotate a bitmap by any angle.
Add a Border to a Bitmap
Quickly add a border around or inside a bitmap.
Remove a Border from a Bitmap
Quickly delete a border that surrounds a bitmap.
Animate Bitmap Sprites
Quickly animate a bitmap sprite sheet.
Convert Bitmap to Byte Array
Quickly create a byte array from a BMP image.
Convert Byte Array to a Bitmap
Quickly create a BMP image from a byte array.
Convert RGB Bitmap to BGR Bitmap
Quickly convert RGB bitmap colors to BGR channel order.
Base-64 Encode a Bitmap
Quickly convert a BMP file to the base-64 encoding.
Base-64 Decode a Bitmap
Quickly convert base-64 encoding to a BMP file.
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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.
Convert BGR Bitmap to RGB Bitmap
Convert BMP colors in BGR order to RGB order
Change Bitmap Depth
Change the number of bits per pixel of a bitmap.
Swirl a Bitmap
Create a swirl of any radius in a bitmap.
Make Bitmap Black and White
Reduce all bitmap colors to just black and white.
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.
Flip a Bitmap Vertically
Turn a bitmap upside-down.
Flip a Bitmap Horizontally
Make a mirror copy of a bitmap.
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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We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling our mission is to make developers' lives easier, so we created this collection of online bitmap tools. Unlike many other tools, we made our tools free, without ads, and with the simplest possible user interface. Our online bitmap tools are actually powered by our programming tools that we created over the last couple of years. Check them out!
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