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.

CUR to ICO

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

CUR (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, accurate CUR to ICO conversion tailored for designers and photographers needing Windows-compatible icons.

Fast CUR to ICO

Quickly convert CUR cursor resources into multi-size ICO files suitable for Windows icon sets and app assets.

Pixel-Accurate Rasterization

Rasterizes CUR bitmaps precisely, preserving pixel placement and transparency where supported by ICO targets.

Wide Windows Compatibility

Outputs ICO variants commonly accepted by Windows explorers, executables, and installers for reliable deployment.

Batch Processing

Handle multiple CUR files in one operation to produce per-file ICOs or a ZIP bundle for asset pipelines.

Size & Color Options

Choose target ICO sizes and color depths to match UI requirements and balance file size with fidelity.

Local Client Conversion

Conversion occurs in browser memory; source cursor images are not uploaded to remote servers by default.

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	High efficiency	Uncompressed
File Size	Small	Large
Quality	High (compressed)	Lossless
Transparency	Supported	Supported
Metadata	EXIF, ICC	EXIF, ICC
Primary Use	Web delivery	Editing & print

How to Convert Files

Follow these simple steps to convert your files

Upload Source File

Select or drag and drop your source files.

Adjust Settings

Choose resolution or color options if needed.

Convert

Click convert to process files locally in browser.

Download Result

Save your converted files or ZIP archive.

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 CUR Source Structure

Inspect CUR frames for embedded PNG vs bitmap masks to decide if transparency will be preserved
Extract the largest bitmap frame from CUR when preparing high-DPI ICO entries to avoid upscaling
If CUR contains multiple frames, select the representative frame since animation will be flattened
Confirm hotspot coordinates in CUR before conversion; ICO will not store them and placement may shift
Convert source palettes to truecolor if CUR uses indexed colors to reduce posterization in ICO

Target ICO Encoding Choices

Select 32-bit PNG-backed ICO entries to retain alpha from CUR embedded PNGs where available
Include multiple size entries (16/32/64/128/256) so Windows can choose optimal scale per DPI
Prefer lossless PNG entries in ICO to maintain crisp cursor edges when converting small art
Downsample large CUR bitmaps carefully to target sizes to keep anti-aliased edges intact
Avoid converting 1-bit AND masks to semi-transparent alpha without visual inspection for halos

Editor & Platform Workflow

Open generated ICO in an icon editor to reassign hotspots as CUR hotspots are lost
Use Visual Studio or resource tools to embed ICOs into executables replacing CUR usage explicitly
Test ICOs in Windows explorer and target app to confirm correct scale and alpha rendering
When distributing icons, package ICO with README noting original CUR source and hotspot data
If precise color is critical, preview ICO in target OS and adjust source color space before conversion

Verification, Metadata, and Privacy

Verify color accuracy because ICC profile handling varies between CUR variants and ICO PNG entries
Assume EXIF/XMP are not retained; extract metadata from CUR separately if needed for asset records
Perform visual spot checks at 100% and target DPI to catch mask conversion artifacts
Process batches in groups of 20-50 files to balance memory while preserving source integrity
Keep original CUR files archived so hotspots and frame sequences remain available for future edits

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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