Drag & Drop Your BMP Image Here
or
BMP to ICO Converter
Easily create a multi-resolution .ico file from your BMP image for favicons and application icons.
How to Convert BMP to ICO
Upload BMP File
Click "Browse File" or drag and drop your BMP image. For best results, use a square image.
Automatic Creation
The tool automatically creates standard icon sizes (48x48, 32x32, 16x16) into one .ico file.
Download ICO File
Click the "Download ICO" button to save your high-quality, multi-resolution favicon.
Key Features
Multi-Resolution
Creates a single .ico file containing multiple standard sizes for optimal display on any device.
Powerful Engine
Powered by ImageMagick to properly handle the creation of complex, multi-layered ICO files.
Favicon Ready
Create the perfect favicon.ico for your website, ensuring your logo looks sharp in all browser tabs.
Frequently Asked Questions
Why does an .ico file need multiple sizes?
Browsers and operating systems use different icon sizes in different places (e.g., browser tab, desktop shortcut, taskbar). Including multiple sizes in one file allows the device to pick the best one for clarity, preventing blurry upscaling or downscaling.
What is the best size for a source BMP image?
For best results, start with a square image that is at least 48x48 pixels, such as 256x256. This tool will automatically resize your image to the standard smaller sizes needed for the .ico file.
Can I create a transparent icon from a BMP?
The BMP format itself does not support transparency. When you convert a BMP to an ICO with this tool, the resulting icon will have a solid, non-transparent background.