Convert ICO to BMP

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What happens when you convert ICO to BMP?

Multiple source images

Only one image is decoded; a concatenated image sequence is not exported as a complete set.

Encoding mode

BMP may be uncompressed or use a header-selected encoding. Alpha is header-dependent; 32 bits alone do not establish transparency support in the receiving application. The output uses the implemented still-image encoder; file size depends on the pixels and format.

ICO

Source

ICO

Windows Icon

Compression: Depends on variantTransparency: YesMetadata: Image dimensions, Colour depth

An icon resource containing several raster sizes and colour depths, with masks or alpha for transparency.

Explore ICO format →

BMP

Target

BMP

Windows Bitmap

Compression: Depends on variantTransparency: YesMetadata: DIB header, ICC (V5)

Windows raster storage with several DIB header versions. Simple uncompressed pixels are common, but alpha and compression vary.

Explore BMP format →

Is ICO → BMP right for you?

Good choice when

BMP fits your delivery use: Windows bitmap interchange.
You can choose the source image or part needed for delivery.
You need a transparency-capable destination and will check its supported variant.
Your receiving application supports the required BMP variant.

Probably not when

You require a complete collection, page set or multipart round trip.
You assume format-level alpha support guarantees matching transparent edges.
You need a guaranteed output file size or archival pixel equality. Encoder settings do not guarantee either.
You require identical samples without a defined colour and precision policy.

ICO to BMP conversion details

Multiple source images: Only one image is decoded; a concatenated image sequence is not exported as a complete set.
Transparency representation: The implemented target supports alpha. Display-pixel processing can round translucent samples; archival sample equality is not promised.
Encoding mode: BMP may be uncompressed or use a header-selected encoding. Alpha is header-dependent; 32 bits alone do not establish transparency support in the receiving application. The output uses the implemented still-image encoder; file size depends on the pixels and format.
Sample precision & colour: Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Metadata & colour: Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Compression: ICO: Depends on variant → BMP: Depends on variant ICO: ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images. BMP: BMP may be uncompressed or use a header-selected encoding. Alpha is header-dependent; 32 bits alone do not establish transparency support in the receiving application.
Transparency: Transparency is replaced with white by default. Change the background in Advanced options.
Colour depth: BMP: 1 / 4 / 8 / 16 / 24 / 32 bpp
Multiple images: ICO: Alternative icon sizes
Dimensions: Rendered image dimensions are retained within the converter limits; this tool does not offer resizing. Orientation handling depends on the source decoder.
Metadata: Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Common questions

Will every source image be exported?

Only one image is decoded; a concatenated image sequence is not exported as a complete set.

Which compression mode will BMP use?

Are bit depth and colour values guaranteed to match?

Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.

Will metadata and colour profiles be retained?