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What is FITS?

Flexible Image Transport System (FITS) is a scientific data format used primarily in astronomy for storing and transmitting images and datasets.

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 FITS vs BPG?

Use FITS When...

Reach for FITS when your priority is astronomy, scientific imaging, research — 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.

FITS vs BPG: Key Differences

  • •FITS uses lossless compression while BPG uses lossy compression — this is the fundamental technical difference between the two formats.
  • •Moving from FITS (lossy) to BPG (lossy) means the output file will be significantly smaller — but at the cost of some visual fidelity.
  • •How transparency is handled: BPG does not support alpha channels — transparent areas in the source will become opaque.
  • •Storage footprint: Varies from 1MB to several GB for FITS vs 30-50% smaller than JPEG at same quality for BPG.
  • •Use case fit: FITS targets astronomy, scientific imaging, research and BPG targets web images with superior compression — your choice depends on which workflow stage you are serving.

Advantages of FITS

  • ✓FITS uses lossless compression tailored for Astronomy, scientific imaging, research.
  • ✓FITS is supported natively on virtually every device, browser, and operating system.
  • ✓FITS files are bit-for-bit perfect, preserving every pixel and sample for professional work.
  • ✓FITS integrates seamlessly with all major creative tools and workflows.

Advantages of BPG

  • ✓BPG uses lossy compression tailored for Web images with superior compression.
  • ✓BPG is supported natively on virtually every device, browser, and operating system.
  • ✓BPG files are compact and quick to transfer, even over slow connections.
  • ✓BPG integrates seamlessly with all major creative tools and workflows.

Common Use Cases for FITS to BPG Conversion

  • Social media posts and ads
  • Digital photography and editing
  • Graphic design projects
  • E-commerce product images
  • Email marketing campaigns
  • Presentation graphics

Industry Applications

PhotographySocial Media MarketingPrint PublishingE-commerceDigital ArtUI/UX Design

Best Practices for FITS to BPG Conversion

  • →When converting FITS to BPG, check whether BPG supports transparency — if not, your transparent areas will be filled with a solid color
  • →Use BPG for maximum quality archival and FITS 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 FITS and BPG formats in our detailed guide.

Troubleshooting FITS to BPG Conversion

  • !Converting FITS to BPG gives blurry output → increase the quality setting before conversion
  • !Colors look different in BPG than FITS → 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 FITS turned white in BPG → BPG may not support transparency

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Convert FITS to BPG Online - Free & Fast

Convert FITS files to BPG online for free. High-quality conversion with no registration required.

Image Converter

Upload or enter a URL to convert FITS to BPG instantly

Click to upload or drag & drop FITS file

or paste from clipboard

.fits,.FITS (max 100MB)

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About FITS and BPG

FITS

FITS (FITS data) - Flexible Image Transport System, scientific data format. Best for astronomy, scientific imaging, research.

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 astronomy, scientific imaging, research to web images with superior compression
File Size~30-50% smaller than JPEG at same quality after conversion

FAQs

Is converting FITS to BPG free?

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

How long does it take to convert FITS to BPG?

Most FITS 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 FITS to BPG lose quality?

Yes, converting FITS 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 FITS to BPG?

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

Will transparency be preserved when converting FITS to BPG?

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

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