ICO BMP

ICO to BMP Converter

Convert ICO to BMP in your browser. Free, private, and fast. No uploads — the conversion runs entirely on your device.

Drag & drop your ICO file here

or

Max file size: 50 MB · Your file stays in your browser

Your file is processed locally in your browser — nothing is ever uploaded.

Why Convert ICO to BMP?

Converting ICO to BMP is a common task whenever a file has to work somewhere that expects the other format. ICO is the icon container format used by Windows and by every website favicon. BMP is an uncompressed raster format from the early days of Windows. This converter makes the switch locally in your browser — nothing is uploaded.

Common use cases

  • You have a ICO file and need it in BMP format.
  • The target software or platform requires BMP but your file is in ICO.
  • Typical use of BMP: Exchanging images with legacy Windows applications.
  • You want to reduce file size or improve compatibility without using desktop software.
Keep in mind: No compression — BMP files are far larger than PNG at identical quality, making them impractical for web use or sharing.

How to Convert ICO to BMP

  1. Upload or drop your ICO file into the converter above.
  2. Adjust any output settings for BMP if needed.
  3. Click Convert and download your converted file instantly.

About the Formats

ICO (Windows Icon Format)

ICO is the icon container format used by Windows and by every website favicon. A single ICO file can hold multiple image sizes (16×16 up to 256×256) so the operating system or browser can pick the sharpest variant for the context.

Compatibility: Universal favicon support in every browser. Windows native. Most image editors need a plugin to save ICO.

BMP (Bitmap Image File)

BMP is an uncompressed raster format from the early days of Windows. Every pixel is stored without compression, which makes BMP files large but completely lossless and trivially simple to read — the reason it survives in embedded systems, scanners, and legacy Windows software.

Compatibility: Supported by all major browsers, Windows, macOS, and virtually every image editor.

100% Private & Browser-Based

Your files never leave your device. All conversion happens locally in your browser — nothing is uploaded to any server. No sign-up required.

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FAQ

Frequently Asked Questions

Yes — completely free with no sign-up, no watermarks, and no size limits for typical files.

Quality depends on the output settings. For lossless output, choose the highest quality setting available.

Your file is processed entirely within your browser using local JavaScript. It is never uploaded to any server. Only you can access your file.

For browser-based conversion, files up to 50 MB work best. Very large files may take longer depending on your device. We recommend splitting very large files before converting.

Currently, AintoB converts one file at a time to keep the browser-based process simple and private. Reload the page to convert another file.