1. Home
  2. Image Converter
  3. Convert FITS to XPM

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 XPM?

X PixMap (XPM) is a color image format for X11 GUI icons, storing pixel data as C source code with color-key transparency.

When Should You Use FITS vs XPM?

Use FITS When...

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

Use XPM When...

Reach for XPM when your priority is x11 desktop icons, legacy unix graphics — its uncompromising quality ensures every detail is preserved.

FITS vs XPM: Key Differences

  • •FITS uses lossless compression while XPM uses lossless compression — both take the same approach to file size management.
  • •Since both FITS and XPM use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
  • •Alpha channel support: XPM handles transparency.
  • •Storage footprint: Varies from 1MB to several GB for FITS vs Small, efficient for icons for XPM.
  • •Use case fit: FITS targets astronomy, scientific imaging, research and XPM targets x11 desktop icons, legacy unix graphics — your choice depends on which workflow stage you are serving.

Advantages of FITS

  • ✓The lossless nature of FITS means file sizes stay reasonable while handling Astronomy, scientific imaging, research efficiently.
  • ✓From mobile devices to enterprise servers, FITS is recognized and supported everywhere.
  • ✓The trade-off for FITS's perfection is larger files — but for archival work, it is worth every megabyte.
  • ✓FITS is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Advantages of XPM

  • ✓XPM compresses data using lossless methods, keeping file sizes manageable for X11 desktop icons, legacy Unix graphics.
  • ✓Industry-wide support means XPM files open anywhere — from legacy systems to the latest devices.
  • ✓Lossless quality makes XPM the gold standard for archival and master copies.
  • ✓From professional software to open-source alternatives, XPM works out of the box.

Common Use Cases for FITS to XPM Conversion

  • Email marketing campaigns
  • Presentation graphics
  • Blog and article illustrations
  • Mobile app UI assets
  • Product photography for marketplaces
  • Digital art portfolios

Industry Applications

Digital ArtUI/UX DesignAdvertisingBrand ManagementContent ManagementMedical Imaging

Best Practices for FITS to XPM Conversion

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

Troubleshooting FITS to XPM Conversion

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

Related Image Converters

All Image Formats

View all Image converters →

More Image tools

Convert to XPM →Convert from FITS →

Related Tools

Compress Images →

Convert FITS to XPM Online - Free & Fast

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

Image Converter

Upload or enter a URL to convert FITS to XPM instantly

Click to upload or drag & drop FITS file

or paste from clipboard

.fits,.FITS (max 100MB)

SSL EncryptedAuto-deleted in 1 hourProcessed securelyNo registration needed

Verifying security check…

About FITS and XPM

FITS

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

XPM

XPM (XPM pixmaps) - X PixMap, color bitmap format for X11 GUI icons. Ideal for x11 desktop icons, legacy unix graphics.

Format Comparison

CompressionLossless → Lossless
TransparencySupported
Use CaseConvert from astronomy, scientific imaging, research to x11 desktop icons, legacy unix graphics
File Size~Small, efficient for icons after conversion

FAQs

Is converting FITS to XPM free?

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

How long does it take to convert FITS to XPM?

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

What is XPM best used for?

XPM is ideal for x11 desktop icons, legacy unix graphics. X PixMap, color bitmap format for X11 GUI icons

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

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

Related Tools

JPG to FITS
Convert JPG to FITS
JPG to XPM
Convert JPG to XPM
PNG to FITS
Convert PNG to FITS
PNG to XPM
Convert PNG to XPM
View all image converter converters
Tune output for this image conversion
80%
Best compressionBest quality