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What is ORF?

Olympus Raw Format (ORF) contains raw sensor data from Olympus OM-D, PEN, and other Olympus digital cameras.

What is APNG?

Animated PNG (APNG) extends the PNG format with frame-based animation support while maintaining full backward compatibility with standard PNG decoders.

When Should You Use ORF vs APNG?

Use ORF When...

Reach for ORF when your priority is olympus camera raw processing — its uncompromising quality ensures every detail is preserved.

Use APNG When...

Reach for APNG when your priority is web animations, game sprites, animated icons — its uncompromising quality ensures every detail is preserved.

ORF vs APNG: Key Differences

  • •The core technical difference: ORF relies on lossless compression whereas APNG uses lossless compression.
  • •Since both ORF and APNG use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
  • •Transparency: Full alpha channel transparency per frame
  • •Storage footprint: 15-40MB per photo for ORF vs Larger than GIF but better quality for APNG.
  • •Primary audience: ORF is built for olympus camera raw processing scenarios, while APNG focuses on web animations, game sprites, animated icons — pick the format that matches your output requirement.

Advantages of ORF

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

Advantages of APNG

  • ✓APNG uses lossless compression tailored for Web animations, game sprites, animated icons.
  • ✓APNG is supported natively on virtually every device, browser, and operating system.
  • ✓APNG files are bit-for-bit perfect, preserving every pixel and sample for professional work.
  • ✓APNG integrates seamlessly with all major creative tools and workflows.

Common Use Cases for ORF to APNG Conversion

  • Video thumbnail creation
  • Certificate and badge design
  • Websites and online content
  • Print materials and publications
  • Social media posts and ads
  • Digital photography and editing

Industry Applications

Scientific VisualizationE-learning ContentWeb DevelopmentGraphic DesignPhotographySocial Media Marketing

Best Practices for ORF to APNG Conversion

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

JPG vs PNG vs WebP: Which Image Format Should You Use?

Learn more about ORF and APNG formats in our detailed guide.

Troubleshooting ORF to APNG Conversion

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

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Convert ORF to APNG Online - Free & Fast

Convert ORF files to APNG online for free. High-quality conversion with no registration required.

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About ORF and APNG

ORF

ORF (Olympus ORF raw) - Olympus Raw Format, raw image from Olympus cameras. Best for olympus camera raw processing.

APNG

APNG (APNG animations) - Animated PNG, frame-based animation using PNG compression. Ideal for web animations, game sprites, animated icons.

Format Comparison

CompressionLossless → Lossless
TransparencySupported
Use CaseConvert from olympus camera raw processing to web animations, game sprites, animated icons
File Size~Larger than GIF but better quality after conversion

FAQs

Is converting ORF to APNG free?

Yes, GoConvertFile offers free conversion of ORF to APNG for files up to 100MB. No registration required.

How long does it take to convert ORF to APNG?

Most ORF to APNG conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is APNG best used for?

APNG is ideal for web animations, game sprites, animated icons. Animated PNG, frame-based animation using PNG compression

What file size should I expect after converting ORF to APNG?

File size after ORF to APNG conversion depends on the content complexity and quality settings. Both formats use similar compression approaches so sizes are comparable.

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