What is CR2?

Canon Raw v2 (CR2) is Canon's second-generation raw image format used by Canon EOS digital cameras for professional photography.

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.

When Should You Use CR2 vs ICO?

CR2 vs ICO: Key Differences

• •CR2 uses lossless compression while ICO uses lossless compression — both take the same approach to file size management.
• •Since both CR2 and ICO use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
• •How transparency is handled: ICO supports transparency, so alpha information is preserved during conversion.
• •File sizes: CR2 files typically range 20-50MB per photo depending on camera and ICO files 1-16KB.
• •Primary audience: CR2 is built for canon photography, professional raw editing scenarios, while ICO focuses on favicons, application icons, platform-specific assets — pick the format that matches your output requirement.

Advantages of CR2

• ✓CR2 uses lossless compression tailored for Canon photography, professional raw editing.
• ✓CR2 is supported natively on virtually every device, browser, and operating system.
• ✓CR2 files are bit-for-bit perfect, preserving every pixel and sample for professional work.
• ✓CR2 integrates seamlessly with all major photo editing tools and workflows.

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.

Common Use Cases for CR2 to ICO Conversion

• E-commerce product images
• Email marketing campaigns
• Presentation graphics
• Blog and article illustrations
• Mobile app UI assets
• Product photography for marketplaces

Industry Applications

Best Practices for CR2 to ICO Conversion

• →When converting CR2 to ICO, check whether ICO supports transparency — if not, your transparent areas will be filled with a solid color
• →Use ICO for maximum quality archival and CR2 for lossless workflows
• →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 CR2 to ICO Conversion

• !ICO shows visible compression artifacts → lower the compression level or switch to a lossless variant
• !The converted ICO image looks washed out → the source CR2 likely uses a wider color space than ICO supports
• !ICO file is much larger than expected → check if the conversion preserved an unnecessarily high resolution
• !Text in the converted ICO 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