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BMP to ICO Converter

Convert BMP images to ICO right in your browser, one file or a whole batch.

  • Free, no sign-up
  • Files never leave your device
  • Batch processing
  • No watermark
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Your files are processed on this device and are never uploaded to a server.

What happens when you convert BMP to ICO

CompressionLossless → Lossless
Sizes16, 32 and 48 px by default, up to 256 px, in one .ico file
MetadataEXIF, GPS location and camera data are not copied to the new file
Opens inWindows and every browser (as a favicon)

Sizes are typical values; your files will vary with content and settings.

BMP

BMP Windows Bitmap

BMP is the uncompressed bitmap format native to Windows. Files are large because each pixel is stored raw, but almost every program, embedded device and legacy system can read it.

BMP converter
ICO

ICO Windows Icon

ICO is a container that holds one or more square icon images at different sizes. Browsers use it for favicon.ico and Windows uses it for application and shortcut icons.

ICO converter

How to use the BMP to ICO Converter

  1. 1

    Click Choose files or drop your BMP images onto the page.

  2. 2

    Adjust the ICO options if needed. The defaults work well for most images.

  3. 3

    Click Convert, then download each ICO or all of them as a ZIP.

Why convert BMP to ICO?

BMP files come from old Windows software, Paint, scanners and embedded devices that write raw bitmaps. Files are very large because there is no compression. Choose ICO for a website favicon or a Windows shortcut icon.

BMP to ICO settings

Choose which icon sizes to embed. Non-square images are centred on a transparent square canvas. You can also cap the width and height, which resizes large photos in the same step.

Frequently asked questions

Will the ICO lose quality?

No. Both formats are lossless, so every pixel or sample in your BMP is kept exactly.

Questions about privacy, file-size limits or conversion speed are answered in the general FAQ.