Convert BMP to ICO

Convert BMP files to ICO in your browser. Free, no upload, no signup.

Output format

ICO

01 — Overview

Why convert BMP to ICO

ICO is a more practical choice than BMP for most modern workflows. Site favicons (favicon.ico) and Windows application/shortcut icons

02 — Comparison

BMP vs ICO

AttributeBMPICO
Compression—Lossless
TransparencyNoYes
AnimationNoNo
Typical file sizeVery largeVaries
Browser supportMajor browsers will render BMP, but it's never the right choice for the web.Universally supported as a favicon — every browser reads .ico. Not used for general on-page images.

03 — How to

Three steps

  1. 01

    Drop your BMP files

    Drag one or more BMP files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.

  2. 02

    Convert in your browser

    convert.now decodes each BMP and re-encodes it as ICO via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.

  3. 03

    Download the result

    Download a single ICO file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

04 — Pillars

Why convert.now

  • Private

    Files stay in your browser. No upload step. Nothing for anyone to see.

  • Fast

    No queue, no upload wait. Conversion starts the moment you drop a file.

  • Free

    No ads. No file-count limit. No sign-up wall. Just the converter.

05 — FAQ

Frequently asked

No. The conversion from BMP to ICO runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

06 — More

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