ICO to BMP converter

ICO pixels are decoded and encoded as BMP by our image engine for ico-to-bmp; no OCR is performed.

Converted with Image engine · nothing stored
Free: 5 conversions a day · 5 MB each
Higher limits →

What changes

ICO pixels are decoded and encoded as BMP by our image engine for ico-to-bmp; no OCR is performed.
EXIF, color profiles, layers, animation frames, and camera metadata may be stripped unless the destination requires minimal metadata.
Transparency stays for PNG and WebP but is filled with the selected background for JPEG, BMP, PDF, and other opaque targets.
Animated inputs such as GIF are flattened to a still frame unless a server codec explicitly supports animation for that output.
SVG input is rasterized at the requested dimensions or DPI, producing pixels rather than editable vector paths.
This pair runs in a browser worker first, so standard web conversion does not upload the file.

A real ICO → BMP run

We converted our ICO sample (12 KB) with Image engine on 2026-10-20. It took 10 ms and produced a 128 KB BMP file, 11× larger than the input. The engine raised 1 warning, listed below.

Input · sample.ico · 12 KB

256 × 171 px, 1 size: 256×171

Width: 256
Height: 171
Encoding: 1 size: 256×171

Output · sample.bmp · 128 KB

256 × 171 px, 24-bit

Width: 256
Height: 171
Encoding: 24-bit

Image metadata stripped from output.

Options

width: Set the output width in pixels.
height: Set the output height in pixels.
fit: Contain, cover, or fill within the requested dimensions.
quality: Set lossy output quality where the codec supports it.
background: Fill transparency with this color for opaque formats.
stripMetadata: Remove source metadata when writing the output.
dpi: Rasterize SVG or PDF-derived pixels at the requested scale where supported.

Example

input

ICO image, 1200 × 800 pixels

output

BMP image resized or re-encoded without OCR text extraction

Do it in code

python

from PIL import Image
img = Image.open("input.ico")
img.save("output.bmp")

ICO to BMP by API or MCP

The HTTP API and the MCP server run the exact engine this page uses (Image engine); the response carries the same warnings the web converter shows. Check support first with GET /api/v1/pairs?from=ico&to=bmp.

curl

curl -X POST https://filetypeconverters.com/api/v1/convert \
  -H "Authorization: Bearer $FTC_API_KEY" \
  -F "file=@input.ico" -F "from=ico" -F "to=bmp" \
  -F 'options={"dpi":96}' \
  --output output.bmp

Options this engine accepts for ICO → BMP

Key	Applies to	Type	Default
dpi	Reading ICO	number	96
width	Writing BMP	number	0
height	Writing BMP	number	0
fit	Writing BMP	contain · cover · fill	contain
quality	Writing BMP	number	90
background	Writing BMP	string	#ffffff
stripMetadata	Writing BMP	boolean	true

API reference

Related conversions

This converter works today; a tested write-up of what changes for ICO → BMP is in progress.