ICO to BMP Converter
Convert ICO to BMP free in your browser — pixel-exact, uncompressed data. No signup, no watermark, no file limits; process up to 30 images at once and download a ZIP.
- Free forever
- No upload
- Bulk 30 files
- No watermark
Last updated · Built and reviewed by the FreeConverterTools editorial team · Tested in Chrome, Edge, Firefox and Safari.
Drop your ICO files onto the box above (up to 30 at once), press Convert All, and download the finished BMP files individually or as one ZIP. Your browser does all the encoding itself — a typical photo takes well under a second and nothing is ever uploaded.
Most people reach for a ico to bmp converter for one of two reasons: BMP is an uncompressed Windows bitmap that keeps every original pixel, or the software you are sending files to simply refuses to open a Icon. Whatever the reason, this tool converts your files in the browser you already have open — nothing to install, no account to create, and no upload queue to wait behind.
ICO is the favicon and application-icon format used by browsers and Windows; bmp is an uncompressed Windows bitmap that keeps every original pixel. If you are deciding between destinations, the same files can go to ICO to WebP or ICO to JPG just as easily — or browse the whole ico converter collection for the exact pairing you need.
Why Choose a No-Upload First ICO to BMP Converter?
Because ICO to BMP should happen on your own machine, not on somebody else’s server. FreeConverterTools.net’s ICO to BMP converter is a real program that runs inside your browser tab — it decodes, re-encodes and returns your files using modern web codecs (Canvas, WebCodecs, WASM decoders). There is no upload endpoint, no queue, no credit meter and no watermark, because nothing has to travel anywhere before it can be processed. The same code that ships to you is what your “private browsing” window already trusts with your bank login.
- Privacy is architectural, not a promise. Your ICO never reaches our server — there is no server step to distrust, no clause to read and no retention policy to worry about.
- Faster than upload sites. A typical 5 MB file finishes in well under a second because we skip the round-trip to a cloud queue. No 200 MB caps, no overnight jobs.
- Bulk by default. Drop up to 30 files, set the options once, download one ZIP — unlimited batches, no account.
- Quality is your dial, not our guess. Native resolution is preserved by default; sliders and pixel caps are exposed so you decide the trade-off.
- Works on every OS and browser. Chrome, Edge, Firefox, Safari; Windows, macOS, Linux, Android and iPhone (including direct HEIC import from the Photos app).
- Genuinely free, forever. No "3 of 5 files free", no watermark upsell, no dark pattern behind the download button.
How to ico to bmp — step by step
Click the upload area or drag files straight onto the page — up to 30 at once. Pasting from the clipboard (Ctrl+V / Cmd+V) works too, and nothing is uploaded at any point.
By default original resolution and top quality are kept. Optionally cap the maximum pixel size or adjust quality for photo formats.
Files are processed in a queue directly on your device. Progress shows per file with the before-and-after size.
Grab individual images with the Download button on each row, or use "Download All (ZIP)" for the entire batch.
Comparing ICO and BMP
Conversion is really a trade: you give up one set of properties to gain another. Here is exactly what changes when a Icon becomes a Bitmap:
| Property | ICO (source) | BMP (target) |
|---|---|---|
| Introduced | 1990s | 1990 |
| Compression | Yes | Yes |
| Transparency | Full (32-bit) | None (or 8-bit) |
| Colour depth | 16.7 million | 16.7 million |
| Animation | Possible | No |
| Browser support | Favicon standard | Supported but heavy |
| Typical size | Tiny (icon sizes only) | Uncompressed — very large |
Best for BMP: Raw pixel-exact storage and legacy Windows pipelines.
Stay on ICO if: Website favicons and desktop app icons at 16/32/48/256 px.
When ico to bmp actually saves you time
- Speeding up a website. Swapping ICO artwork for bmp is the cheapest performance win there is — Google's own advice, and one of the fastest Core Web Vitals improvements you can ship. Try ICO to WebP or ICO to AVIF for hero images and galleries.
- Meeting a strict upload form. Government portals, school systems and CMS uploads often cap file size or format. Compress afterwards with the BMP compressor if the converted files still run heavy.
- Sharing with the other team. A ICO from an iPhone or a design export will not always open cleanly in a colleague's viewer — BMP removes that excuse.
- Bulk archiving. Converting 30 at a time means one folder can be migrated during a coffee break, with a single ZIP to download.
Why use FreeConverterTools.net instead of the usual converter sites?
- Nothing is uploaded. Conversion runs on your machine. That also means no 200MB file caps and no overnight cloud queues.
- Free without an asterisk. No credits, no "3 of 5 files free", no watermark unless you add one yourself.
- Bulk by default. Up to 30 files per batch, one ZIP download.
- Quality is yours to set. Keep native resolution, cap maximum pixels, or dial the compression quality yourself — the defaults keep every pixel.
- Works everywhere. Chrome, Edge, Firefox, Safari; Windows, macOS, Linux, Android, iPhone.
- Private by architecture, not by promise. There is simply no upload endpoint to distrust.
Frequently asked questions
Is the ICO to BMP converter really free?
Do I need to upload my ICO files to a server?
Does converting ico to bmp reduce image quality?
Can I convert multiple files at once?
How long does a conversion take?
Will the BMP file open in my software?
Does it work on iPhone and Android?
What happens to my files after I close the tab?
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