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What is HEIC?

HEIC (High Efficiency Image Container) is a modern image format developed by the HEVC industry group. It uses advanced compression to achieve much smaller file sizes than JPEG.

What is FITS?

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

When Should You Use HEIC vs FITS?

Use HEIC When...

Reach for HEIC when your priority is ios photography, mobile devices — its efficient compression makes sharing fast and storage minimal.

Use FITS When...

Reach for FITS when your priority is astronomy, scientific imaging, research — its uncompromising quality ensures every detail is preserved.

HEIC vs FITS: Key Differences

  • •The core technical difference: HEIC relies on lossy compression whereas FITS uses lossless compression.
  • •Converting from HEIC to FITS changes compression type: lossless source becomes larger but with full quality preservation.
  • •How transparency is handled: FITS supports transparency, so alpha information is preserved during conversion.
  • •HEIC files are typically 50% smaller than equivalent JPEG while FITS files range Varies from 1MB to several GB
  • •Use case fit: HEIC targets ios photography, mobile devices and FITS targets astronomy, scientific imaging, research — your choice depends on which workflow stage you are serving.

Advantages of HEIC

  • ✓HEIC compresses data using lossy methods, keeping file sizes manageable for iOS photography, mobile devices.
  • ✓Industry-wide support means HEIC files open anywhere — from legacy systems to the latest devices.
  • ✓Small file sizes make HEIC ideal for email, web uploads, and cloud storage.
  • ✓From Adobe Photoshop to open-source alternatives, HEIC works out of the box.

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.

Common Use Cases for HEIC to FITS Conversion

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

Industry Applications

AdvertisingBrand ManagementContent ManagementMedical ImagingReal Estate PhotographyGame Development

Best Practices for HEIC to FITS Conversion

  • →When converting HEIC to FITS, check whether FITS supports transparency — if not, your transparent areas will be filled with a solid color
  • →Use FITS for maximum quality archival and HEIC for smaller file sizes when quality is less critical
  • →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

What Is HEIC Format and How to Convert HEIC to JPG

Learn more about HEIC and FITS formats in our detailed guide.

Troubleshooting HEIC to FITS Conversion

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

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Convert HEIC to FITS Online - Free & Fast

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

Image Converter

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About HEIC and FITS

HEIC

HEIC is widely used for iOS photography, mobile devices. While it is the go-to format in its domain, converting to FITS gives you flexible image transport system, scientific data format, making your files more suitable for different workflows and platforms.

FITS

FITS is designed for Astronomy, scientific imaging, research. Converting from HEIC unlocks flexible image transport system, scientific data format, ensuring your files work optimally in astronomy, scientific imaging, research environments.

Common Use Cases

  • Convert HEIC files to FITS for better compatibility with astronomy, scientific imaging, research applications.
  • Leverage FITS's strengths — flexible image transport system, scientific data format — when working with content originally in HEIC format.
  • Optimize your workflow by switching from HEIC to FITS when astronomy, scientific imaging, research is your primary need.
  • Ensure smooth sharing and processing by converting HEIC to the widely supported FITS format.

Format Comparison

CompressionLossy → Lossless
TransparencySupported
Use CaseConvert from ios photography, mobile devices to astronomy, scientific imaging, research
File Size~Varies from 1MB to several GB after conversion

FAQs

Is converting HEIC to FITS free?

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

How long does it take to convert HEIC to FITS?

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

What is FITS best used for?

FITS is ideal for astronomy, scientific imaging, research. Flexible Image Transport System, scientific data format

Does converting HEIC to FITS lose quality?

No, converting HEIC to FITS does not cause additional quality loss — FITS uses lossless compression. However, any artifacts already present in the original HEIC file will persist in the FITS output.

What file size should I expect after converting HEIC to FITS?

FITS files are typically 2-5x larger than equivalent HEIC files because FITS preserves all pixel data. This is expected and necessary for lossless quality.

Will transparency be preserved when converting HEIC to FITS?

Yes, FITS supports transparency. Alpha channel information from HEIC is preserved during conversion.

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