Convert ICO to BMP

Convert ICO files to BMP locally, completely free and with maximum privacy.

Drag and drop your files here

or click to browse local files (large files supported, limited only by browser RAM)

Upload Files

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How to convert ICO to BMP

  1. Drop your .ico files above, or click Upload Files. You can add many files at once.
  2. BMP is already selected as the output. Open the settings (gear icon) to fine-tune the result.
  3. Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
  4. Download your .bmp files as soon as each one finishes.

What to know about ICO to BMP conversion

  • BMP has no transparency, so transparent areas of the ICO are filled with white.
  • BMP is best for pixel-exact images for legacy Windows software, and opens in Windows apps and most image editors.

ICO vs BMP

FeatureICO (Windows Icon)BMP (Bitmap Image File)
Compressionlosslessuncompressed
TransparencyYesNo
AnimationNoNo
Best forwebsite favicons and Windows iconspixel-exact images for legacy Windows software
Opens inbrowsers, Windows and icon editorsWindows apps and most image editors

ICO (Windows Icon): An image file format for computer icons, widely used as website favicons.

BMP (Bitmap Image File): A classic uncompressed raster graphics format developed by Microsoft, preserving pixel-perfect quality.

Conversion options

  • Resize by width, height or both (aspect ratio is preserved)
  • Filters: grayscale, sepia, blur and sharpen
  • Custom output file name

Frequently asked questions

Is it safe to convert ICO to BMP here?

Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.

Is there a file size limit?

There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.

Can I convert several ICO files at once?

Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.

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