What is PSB?

Photoshop Big (PSB) is Adobe's large document format, extending PSD to support images up to 300,000 pixels and 4 exabytes in size.

What is ARW?

Sony Alpha Raw (ARW) is Sony's proprietary raw image format containing unprocessed sensor data from Sony Alpha and Cyber-shot cameras.

When Should You Use PSB vs ARW?

PSB vs ARW: Key Differences

• •PSB uses lossless compression while ARW uses lossless compression — both take the same approach to file size management.
• •Since both PSB and ARW use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
• •Alpha channel support: ARW lacks transparency support.
• •File sizes: PSB files typically range Can exceed 2GB and ARW files 20-40MB per photo.
• •Use case fit: PSB targets large-format graphic design, billboard artwork and ARW targets sony camera post-processing, professional editing — your choice depends on which workflow stage you are serving.

Advantages of PSB

• ✓PSB compresses data using lossless methods, keeping file sizes manageable for Large-format graphic design, billboard artwork.
• ✓Industry-wide support means PSB files open anywhere — from legacy systems to the latest devices.
• ✓Lossless quality makes PSB the gold standard for archival and master copies.
• ✓From professional software to open-source alternatives, PSB works out of the box.

Advantages of ARW

• ✓ARW uses lossless compression tailored for Sony camera post-processing, professional editing.
• ✓ARW is supported natively on virtually every device, browser, and operating system.
• ✓ARW files are bit-for-bit perfect, preserving every pixel and sample for professional work.
• ✓ARW integrates seamlessly with all major creative tools and workflows.

Common Use Cases for PSB to ARW Conversion

• Blog and article illustrations
• Mobile app UI assets
• Product photography for marketplaces
• Digital art portfolios
• Brochure and flyer design
• Newsletter graphics

Industry Applications

Best Practices for PSB to ARW Conversion

• →Before converting PSB to ARW, decide whether you need maximum quality or smallest file size — this determines which format truly fits
• →Save a master copy in a lossless format before converting to ARW — you cannot recover detail lost during lossy compression
• →Check the color profile: PSB images may use a wider gamut than ARW supports, causing a visible shift after conversion
• →Resize images to the final display dimensions before converting — this avoids unnecessary processing of oversized files
• →Run a single test conversion first to verify quality meets your standards
• →Strip unnecessary metadata to reduce file size after conversion

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Troubleshooting PSB to ARW Conversion

• !Converting PSB to ARW gives blurry output → increase the quality setting before conversion
• !Colors look different in ARW than PSB → check color profile mismatch (sRGB vs Adobe RGB)
• !File size changed more than expected → ARW uses different compression, file size differences of 2-5x are normal
• !Transparent areas in PSB turned white in ARW → ARW may not support transparency

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