Best Free RAW Image Compressor Comparison 2025

Choosing the right image compression tool can save you hours and terabytes of storage. Here's an honest comparison of the best free tools available.

Quick Comparison Table

Feature	Our Tool	Squoosh	TinyPNG	ImageOptim
RAW Support (ARW, CR2, NEF)	✅ Yes	❌ No	❌ No	❌ No
No Upload Required	✅ 100% Local	✅ Local	❌ Server Upload	✅ Desktop App
Batch Processing	✅ Unlimited	❌ One by one	⚠️ 20 files/month	✅ Yes
File Size Limit	None	None	5MB	None
Works Offline	✅ PWA	✅ PWA	❌ No	✅ Desktop
Platform	Web (All OS)	Web (All OS)	Web (All OS)	Mac only
Cost	100% Free	Free	Free (limited)	Free

Detailed Comparison

🏆 Our Tool — Best for RAW Files

Best for: Photographers with RAW files (ARW, DNG, CR2, NEF)

Pros:

✅ Only tool that supports RAW formats
✅ 100% private — files never leave your device
✅ Unlimited batch processing
✅ No file size limits
✅ Works offline as PWA
✅ Completely free with no restrictions

Cons:

⚠️ Newer tool (less brand recognition)

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Squoosh.app — Best for Single Files

Best for: Individual file optimization with visual comparison

Pros:

✅ Great visual side-by-side comparison
✅ Many format options
✅ Local processing
✅ Made by Google

Cons:

❌ No RAW support
❌ No batch processing
❌ Slower for multiple files

TinyPNG — Best for PNG Compression

Best for: Quick PNG/JPG compression

Pros:

✅ Very popular and trusted
✅ Good compression algorithms
✅ Simple interface

Cons:

❌ No RAW support
❌ Files uploaded to server (privacy concern)
❌ 5MB file size limit
❌ Limited to 20 files/month free

ImageOptim — Best for Mac Users

Best for: Mac users who prefer desktop apps

Pros:

✅ Excellent compression quality
✅ Batch processing
✅ No file size limits
✅ Removes metadata

Cons:

❌ No RAW support
❌ Mac only (no Windows/Linux)
❌ Requires download and installation

Which Tool Should You Choose?

Choose Our Tool if:: You work with RAW files (ARW, DNG, CR2, NEF), need batch processing, or value privacy (no uploads)
Choose Squoosh if:: You compress individual files occasionally and want visual feedback
Choose TinyPNG if:: You only work with PNG/JPG and need quick compression for a few files
Choose ImageOptim if:: You're on Mac and prefer desktop apps over web tools

Conclusion

For photographers and professionals working with RAW files, our tool is the only free option that supports ARW, DNG, CR2, and NEF formats with local processing and unlimited batch compression.

For general JPG/PNG compression, all tools perform well — choose based on your privacy preferences (local vs server) and workflow (single vs batch).

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