BMP to ICO Converter
Convert BMP images to ICO favicon format with multiple embedded sizes. Perfect for creating website favicons and application icons from bitmap graphics with multi-resolution support.
Drop your BMP image here
or click to browse files
Complete Guide: BMP to ICO Converter
Everything you need to know about using this tool effectively
The BMP to ICO Converter transforms BMP bitmap images into ICO icon files. ICO format stores multiple image sizes in a single file, making it the standard for Windows application icons and browser favicons. BMP is a natural source for ICO since both formats are closely related. The tool processes everything in the browser, so your image never leaves your device.
This tool reads your BMP file, renders it at standard icon sizes like 16x16, 32x32, and 48x48, and exports the result as an ICO file. BMP does not support transparency, so the ICO output will have opaque backgrounds. For transparent icons, convert from PNG instead.
Create favicons from bitmap images
Convert BMP graphics into ICO files for use as browser favicons that appear in tabs and bookmarks.
Windows application icons
Generate ICO files from BMP designs for desktop application icons on Windows.
Folder and file type icons
Create custom ICO files from BMP artwork for Windows folder icons or file type associations.
Legacy icon creation
Convert existing BMP assets into ICO format for older Windows applications that use bitmap-based icons.
Upload an image
Drag and drop or click to browse for your BMP file.
Convert
Click Convert. The tool generates an ICO file with multiple sizes.
Download
Save the converted ICO file to your device.
For best results, use a square BMP image at least 256x256 pixels as the source.
BMP and ICO are closely related formats, so the conversion produces clean results.
BMP does not support transparency, so the ICO output will have solid backgrounds.
ICO files contain multiple sizes, and the tool generates standard dimensions automatically.
Will the quality change?
ICO files display at small sizes, so the image will be scaled down. Starting with a high-resolution BMP ensures sharp icons at all sizes.
Is my image uploaded to a server?
No. All processing happens in your browser using the Canvas API. The image never leaves your device.
What icon sizes are generated?
The tool generates standard sizes including 16x16, 32x32, 48x48, and 256x256 pixels in one ICO file.
Does the ICO support transparency?
BMP does not support transparency, so the ICO output will not have an alpha channel. Use PNG as the source for transparent icons.
Can I convert multiple images at once?
Yes. Upload multiple files and the tool generates an ICO for each one.