How to convert ICO to BMP
- Drop your ICO files or tap to choose them.
- Select BMP as the output and set quality if needed.
- Click Convert — processing happens on your device.
- Download each file or all of them as a ZIP.
Why convert ICO to BMP?
ICO is excellent for website favicons and Windows application icons, but it has some limitations:
- Only for small square images
- Not for photos
Converting to BMP gives you:
- Perfect pixel quality
- Simple format read by legacy software
- No compression artifacts
ICO vs BMP: side-by-side comparison
| Feature | ICO | BMP |
|---|---|---|
| Full name | Windows Icon | Bitmap Image File |
| File extension | .ico | .bmp |
| Type | Image | Image |
| Compression | Lossless | Uncompressed |
| Transparency | Yes | No |
| Animation / multi-frame | No | No |
| Introduced | 1985 | 1985 |
| Developed by | Microsoft | Microsoft |
| MIME type | image/x-icon | image/bmp |
| Best for | website favicons and Windows application icons | legacy Windows software, embedded devices and raw pixel workflows |
What are ICO and BMP files?
ICO (.ico)
ICO is the icon format used by Windows and by website favicons. One ICO file can hold several sizes (16×16 to 256×256) so the right one is shown everywhere.
BMP (.bmp)
BMP is an old uncompressed bitmap format from Microsoft Windows. It stores raw pixel data, so quality is perfect but files are very large.
Tips for the best BMP results
- BMP has no transparency, so transparent areas are filled with a background colour (white by default — you can change it).
- Bookmark this page or install the app to convert ICO files offline next time.
Private by design: how this converter works
Unlike typical online converters that upload your file to a remote server, this ICO to BMP converter processes everything on your own device using the HTML5 Canvas API and native image decoders built into your browser. Your file is read into browser memory, converted, and offered back as a download — it is never sent to us.
- No upload wait — conversion starts instantly, even on slow mobile data.
- Private — safe for NID copies, certificates, bank statements and personal photos.
- No limits — no daily quota, no queue and no watermark.
- Offline-ready — once loaded, many tools keep working without internet.
Frequently asked questions
Is this ICO to BMP converter free?
Yes — free, unlimited and without watermarks or sign-up.
Are my ICO files uploaded to a server?
No. Conversion happens inside your browser on your own device, so your files stay private.
Will I lose quality converting ICO to BMP?
BMP preserves all of the original quality.
Can I convert several files at once?
Yes. Drop multiple files and download them individually or together as a ZIP.
Does it work on iPhone and Android?
Yes. It works in Chrome, Safari, Edge and Firefox on phones, tablets and computers. You can also install the site as an app.
What is the difference between ICO and BMP?
ICO (Windows Icon) is lossless and best for website favicons and Windows application icons, while BMP (Bitmap Image File) is uncompressed and best for legacy Windows software, embedded devices and raw pixel workflows.