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What is HDR?

Radiance HDR is an image format that stores high dynamic range pixel data, commonly used for HDRI environment maps and lighting.

What is BPG?

Better Portable Graphics (BPG) is a modern image format based on HEVC video compression, offering excellent compression efficiency.

When Should You Use HDR vs BPG?

Use HDR When...

Reach for HDR when your priority is hdri lighting, panoramic photography — its uncompromising quality ensures every detail is preserved.

Use BPG When...

Reach for BPG when your priority is web images with superior compression — its efficient compression makes sharing fast and storage minimal.

HDR vs BPG: Key Differences

  • •HDR and BPG diverge on compression: lossless compression for the source, lossy compression for the target.
  • •The switch from lossless compression to lossy compression means you gain significant space savings while accepting minor quality trade-offs.
  • •Alpha channel support: BPG handles transparency, so semi-transparent pixels from the source will be lost.
  • •HDR files are typically 5-30MB for typical HDR maps while BPG files range 30-50% smaller than JPEG at same quality
  • •Use case fit: HDR targets hdri lighting, panoramic photography and BPG targets web images with superior compression — your choice depends on which workflow stage you are serving.

Advantages of HDR

  • ✓HDR compresses data using lossless methods, keeping file sizes manageable for HDRI lighting, panoramic photography.
  • ✓Industry-wide support means HDR files open anywhere — from legacy systems to the latest devices.
  • ✓Lossless quality makes HDR the gold standard for archival and master copies.
  • ✓From Adobe Photoshop to open-source alternatives, HDR works out of the box.

Advantages of BPG

  • ✓BPG applies lossy compression specifically calibrated for Web images with superior compression.
  • ✓BPG enjoys broad native support across operating systems, browsers, and creative tools alike.
  • ✓BPG delivers impressive compression ratios, shrinking files dramatically while keeping visual quality high.
  • ✓You will find BPG support built into virtually every tool that handles Web images with superior compression — no plugins or converters needed.

Common Use Cases for HDR to BPG 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 HDR to BPG Conversion

  • →Before converting HDR to BPG, 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 BPG — you cannot recover detail lost during lossy compression
  • →Check the color profile: HDR images may use a wider gamut than BPG 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

Related Article

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

Learn more about HDR and BPG formats in our detailed guide.

Troubleshooting HDR to BPG Conversion

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

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About HDR and BPG

HDR

HDR (HDR images) - Radiance HDR, high dynamic range image format. Best for hdri lighting, panoramic photography.

BPG

BPG (BPG images) - Better Portable Graphics, high-efficiency image codec. Ideal for web images with superior compression.

Format Comparison

CompressionLossless → Lossy
TransparencyN/A
Use CaseConvert from hdri lighting, panoramic photography to web images with superior compression
File Size~30-50% smaller than JPEG at same quality after conversion

FAQs

Is converting HDR to BPG free?

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

How long does it take to convert HDR to BPG?

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

What is BPG best used for?

BPG is ideal for web images with superior compression. Better Portable Graphics, high-efficiency image codec

Does converting HDR to BPG lose quality?

Yes, converting HDR to BPG uses lossy compression, which reduces file size by discarding some visual data. Set quality to 85-95% for a good balance of quality and file size.

What file size should I expect after converting HDR to BPG?

BPG files are typically 50-80% smaller than HDR files because BPG uses efficient lossy compression. The exact reduction depends on quality settings.

Will transparency be preserved when converting HDR to BPG?

No, BPG does not support transparency. Any transparent areas in your HDR will be filled with a solid color (usually white) during conversion. Use PNG or WebP if transparency is needed.

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