Convert ICO files directly into BMP in your browser. 100% private WebAssembly processing, no uploads required.
Output format
ICO files are converted to BMP entirely on your device. Your images are never uploaded to a server.
Add many ICO files at once and convert them all in a single click. Each file has its own progress indicator and status, and you can download everything as a ZIP at the end.
No estimated savings — the actual output bytes are shown, so the percentage saved you see is what you actually get.
For lossy BMP output a 1–100 quality slider trades size against visual quality. The tradeoff is explained inline.
BMP (Windows Bitmap) is an uncompressed raster image format developed by Microsoft for uncompressed pixel graphics.
BMP is an uncompressed pixel format useful for legacy Windows applications, embedded hardware, and software development.
BMP supports alpha transparency, so transparent regions in your source image are preserved in the converted file.
It depends on the source image and the quality settings you choose. The tool always shows the actual output size and the exact percentage saved.
No. Files processing is secure and safe — your images are processed locally in your browser and never uploaded.
Yes. Drag in as many files as you want, click Convert All, and download the results individually or as a ZIP.
Yes. The interface is responsive and touch-friendly, and conversion runs on modern mobile browsers.