What is ICO?

ICO (Icon) is a file format for computer icons in Microsoft Windows. ICO files contain one or more small images for application icons and favicons.

What is CPT?

Corel PHOTO-PAINT (CPT) is the native project format for Corel PHOTO-PAINT, preserving layers, masks, and editing history.

When Should You Use ICO vs CPT?

ICO vs CPT: Key Differences

• •ICO and CPT diverge on compression: lossless compression for the source, lossless compression for the target.
• •Both formats share lossless compression, so quality behavior is similar across the two — file size differences come from algorithm efficiency rather than compression philosophy.
• •How transparency is handled: CPT supports transparency, so alpha information is preserved during conversion.
• •File sizes: ICO files typically range 1-16KB and CPT files Large due to layer data.
• •ICO is optimized for favicons, application icons, platform-specific assets while CPT is designed for corel image editing, photo manipulation — choose based on your specific workflow needs

Advantages of ICO

• ✓ICO applies lossless compression specifically calibrated for Favicons, application icons, platform-specific assets.
• ✓ICO enjoys broad native support across operating systems, browsers, and creative tools alike.
• ✓ICO guarantees every bit of the original data survives — no approximations, no shortcuts.
• ✓You will find ICO support built into virtually every tool that handles Favicons, application icons, platform-specific assets — no plugins or converters needed.

Advantages of CPT

• ✓The lossless nature of CPT means file sizes stay reasonable while handling Corel image editing, photo manipulation efficiently.
• ✓From mobile devices to enterprise servers, CPT is recognized and supported everywhere.
• ✓The trade-off for CPT's perfection is larger files — but for archival work, it is worth every megabyte.
• ✓CPT is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Common Use Cases for ICO to CPT Conversion

• Print materials and publications
• Social media posts and ads
• Digital photography and editing
• Graphic design projects
• E-commerce product images
• Email marketing campaigns

Industry Applications

Best Practices for ICO to CPT Conversion

• →When converting ICO to CPT, check whether CPT supports transparency — if not, your transparent areas will be filled with a solid color
• →Use CPT for maximum quality archival and ICO for smaller file sizes when quality is less critical
• →Optimize images for web to reduce page load times — tools like our converter let you adjust quality settings before conversion
• →Maintain original aspect ratio to avoid distortion during conversion
• →Always keep a backup of your original files before converting
• →Choose the appropriate quality settings for your specific use case

Related Article

Troubleshooting ICO to CPT Conversion

• !CPT shows visible compression artifacts → lower the compression level or switch to a lossless variant
• !The converted CPT image looks washed out → the source ICO likely uses a wider color space than CPT supports
• !CPT file is much larger than expected → check if the conversion preserved an unnecessarily high resolution
• !Text in the converted CPT looks fuzzy → text-heavy images benefit from higher quality settings or a different output format

Related Image Converters

All Image Formats

More Image tools

Related Tools