What file formats do you support?

We support over 100 file formats including images (JPG, PNG, GIF, WebP, TIFF), documents (PDF, DOC, DOCX, TXT), videos (MP4, AVI, MOV), audio (MP3, WAV, FLAC), and many more specialized formats.

Yes, absolutely. We use enterprise-grade encryption for all file transfers. Your files are automatically deleted from our servers after conversion, and we never store or access your personal data.

What is the maximum file size?

The maximum file size for free users is 100MB per file. Premium users can convert files up to 1GB. For larger files, we recommend our batch processing feature.

How long does conversion take?

Most files convert in under 30 seconds. The exact time depends on file size and format complexity. Our advanced algorithms ensure the fastest possible conversion while maintaining quality.

Can I convert multiple files at once?

Yes! Our batch processing feature allows you to upload and convert up to 50 files simultaneously. This is perfect for bulk conversions and saves significant time.

Do I need to create an account?

No account is required for basic conversions. However, creating a free account gives you access to batch processing, file history, and priority support.

ICO to BMP

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

ICO (Max. 10MB) • Up to 5 files in guest mode

Choose Files

Or upload from:

Temporary file processingFiles are uploaded for processing and are not retained as permanent storage. Read our File Processing & Retention Policy.

2. Conversion Settings

Convert From

Convert To

Image options

Width (px)

Height (px)

Strip image metadata (EXIF, etc.)

Advanced Options

Quality

Instant download after conversion

Why Choose Our Converter?

Fast, browser-based ICO to BMP conversion optimized for web publishing and desktop editing workflows.

Fast Local Conversion

Convert ICO favicons to BMP images quickly in your browser without uploading to servers.

Wide Software Support

Output BMPs work with legacy editors and Windows-native applications for seamless editing.

Pixel-Accurate Rasterization

Rasterizes ICO icon frames to BMP bitmaps preserving pixel placement and visible pixels.

Multi-Frame ICO Handling

Select and export specific ICO frames (sizes) to individual BMPs for exact resolution control.

Client-Side Processing

All decoding and conversion run in-browser memory buffers for privacy and speed.

Uncompressed Output

BMP target is uncompressed by default, giving predictable file sizes for print and editing.

Frequently Asked Questions

Find answers to common questions about our file conversion service

Still have questions?

Can't find the answer you're looking for? Our support team is here to help.

Performance Estimates

Estimated conversion times based on typical hardware.

Conversion Speed Benchmarks

1-3 seconds

12 MP image processing

12 MP, 4000x3000

Fast

3-6 seconds

24 MP image processing

24 MP, 6000x4000

Moderate

8-15 seconds

48 MP image processing

48 MP, 8000x6000

Slow

Batch Conversion Estimates

Batch Size	Total Time	Avg per Image	Efficiency
10 images (12 MP each)	20-40 seconds	2-4 seconds	High
50 images (12 MP each)	1.5-3 minutes	1.8-3.6 seconds	High
100 images (12 MP each)	3-6 minutes	1.8-3.6 seconds	Moderate
200 images (12 MP each)	6-12 minutes	1.8-3.6 seconds	Moderate

Browser Compatibility

Format support across all major browsers

Support Across Browsers

Chrome

Supported

Full Support

Firefox

Supported

Full Support

Safari

Supported

Full Support

Edge

Supported

Full Support

Advanced Format Features Support

Features	Chrome	Firefox	Safari	Edge
Alpha Channel
ICC Profiles
EXIF Metadata
16-bit Depth

Device Compatibility

Seamless conversion across desktop, mobile and tablet

Desktop

Fast multi-core processing
Batch upload support

Mobile

Responsive mobile browser workflow
Instant photo conversion

Tablet

Full tablet browser support
Touch-friendly interface

Source vs Target Format

Key technical differences between formats

Feature	Source Format	Target Format
Compression	Indexed/packed palettes or 32-bit RGBA	Uncompressed
File Size	Compact for icons	Large uncompressed bitmaps
Quality	Optimized for small sizes	Lossless pixel data
Transparency	Mask or alpha supported	Optional depending on BMP variant
Metadata	Minimal container metadata	Header fields, optional profiles
Primary Use	Favicons and UI icons	Editing, printing, legacy application support

How to Convert Files

Follow these simple steps to convert your files

Upload Source File

Select or drag and drop your ICO file; the tool will enumerate available icon frames.

Adjust Settings

Pick the desired frame size and choose 24-bit or 32-bit BMP depending on alpha needs.

Convert

Click convert; decoding and BMP encoding occur locally in the browser for privacy.

Download Result

Save the BMP or ZIP of multiple frames; verify alpha and color in an editor.

Ready to Convert Your Files?

Use our high-speed converter to process your images now.

Start Converting Now

Tips and Best Practices

Optimize your conversion workflow with technical recommendations.

Prepare ICO Frames

Open ICO in an icon-aware viewer to inspect included frame sizes before export
Select the exact ICO frame matching your target pixel dimensions to avoid resampling
Prefer 32-bit ICO frames when you need preserved alpha; export to 32-bit BMP when supported
If ICO contains indexed palettes, convert using the largest color depth to avoid posterization
For multi-frame ICOs, export each frame separately for controlled editing workflows

Target BMP Encoding

Choose 24-bit BMP for maximum compatibility with legacy apps that ignore alpha
Select 32-bit BMP only when your editor supports alpha channel rendering
Expect BMP file size to increase; preallocate storage when converting many icons
Avoid unnecessary resampling: match DPI and pixel dimensions to your editing target
When preparing for print or detailed editing, prefer uncompressed BMP to preserve pixels

Verify Output Visually

Open converted BMP in a color-managed editor to check for color shifts after export
Check transparent regions in an editor that displays alpha channel separately when 32-bit BMP used
Compare pixel edges at 100% zoom to ensure rasterization matched the ICO mask
If palette conversions occurred, validate gradients for banding and adjust bit depth if needed
Test BMP in the final consuming app (Windows, CMS, or print pipeline) to confirm compatibility

Workflow & Privacy

Process ICOs locally to keep favicon assets private and avoid server uploads
Group icons by similar dimensions into 20-50 file batches to minimize memory strain
Close heavy browser tabs to free RAM and prevent conversion slowdowns on large batches
Immediately download and archive BMP outputs to avoid leaving large files in temporary memory
If converting for web, plan a follow-up PNG or ICO export since BMP is not ideal for browsers

Fast Processing

Close unused tabs for maximum throughput.

Client-Side Privacy

No media leaves your device.

Broad Compatibility

Output files work across all operating systems.

Pro Tip

For batch conversions, process in groups of 20-50 files to optimize memory usage and avoid browser slowdowns.

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