Convert ICO to BMP
ICO is the Windows icon format, used for favicons and application icons. BMP is the practical destination when ICO is the thing standing in the way, because BMP is built for legacy Windows software and raw pixel data and almost every program opens it. The conversion runs entirely in your browser: there is no upload, no file size limit and no watermark on the result.
Drop your ICO files below and download BMP in seconds. Free, unlimited and completely private: the conversion runs inside your browser, so your files never leave your device and are never uploaded to a server.
No upload. Works with your network switched off. Check it yourself, or read what actually happens to your file.
Why convert ICO to BMP?
ICO files bundle one or more icon sizes into a single file that Windows and browsers use for favicons and app icons. Regular image viewers often refuse to open them, and most editors cannot save them, so a converter is the practical way in or out of the format.
BMP stores pixels with little or no compression, which makes files huge but trivially simple to read. It is mostly seen in legacy Windows workflows, screenshots from older tools and some scientific software. Converting to a compressed format usually shrinks a BMP by 90 percent or more.
Note that BMP does not support transparency, so any transparent areas in your ICO files will be filled with a solid background after conversion.
ICO vs BMP at a glance
| ICO | BMP | |
|---|---|---|
| Full name | Windows icon | Bitmap image |
| Compression | Contains PNG or BMP data | Uncompressed |
| Transparency | Yes | No |
| Best for | Favicons and Windows application icons | Legacy Windows software and raw pixel data |
What changes when you convert ICO to BMP
| What happens | |
|---|---|
| Image quality | Depends on the quality setting above, which controls how much detail BMP keeps. |
| Transparency | Lost. BMP cannot store an alpha channel, so transparent areas are filled with solid white. |
| EXIF and GPS | Removed. The conversion goes through a pixel buffer, so camera data and location are not carried into the BMP file. |
| Colour profile | Not carried across. The image is handled in sRGB, which is right for the web and wrong for colour-managed print work. |
| Animation | Not applicable. ICO files here are single images. |
| File size | Much larger. A 24 bit BMP costs three bytes per pixel regardless of content, so the file size is fixed by the dimensions alone. |
How to convert ICO to BMP
- Drop one or more ICO files into the box above, or click to browse.
- ImageConvert converts each file to BMP right on your device.
- Download a single file, or grab everything at once as a zip.
Frequently asked questions
What is an ICO file?
ICO is the Windows icon format, used for favicons and application icons.
What is a BMP file?
BMP is an uncompressed Windows bitmap that keeps full pixel detail at a large file size.
Is it free to convert ICO to BMP?
Yes. There are no limits, no watermarks and no account needed. Convert as many ICO files as you like.
Are my files private?
Completely. Your ICO files never leave your browser and are never uploaded to a server, so your images stay on your device.