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FITS to CUR — Format Comparison & Online Converter

Fast, instant FITS to CUR conversion. No signup required. Just drop your .fits file and get .cur in seconds.

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About FITS to CUR Conversion

FITS and CUR are both image formats, but they differ in important ways. FITS is a widely used file format. CUR is a widely used file format.

When you convert FITS to CUR, the goal is to convert between formats quickly. Converting FITS to CUR maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.

Your FITS file is decoded and re-encoded as CUR. The conversion involves 4 steps: (1) your fits file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in cur format, (4) the converted file is ready for download.

CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.

This conversion is ideal when you When you need a CUR file. For the opposite direction, CocoConvert also supports CUR to FITS conversion.

How to Convert FITS to CUR

  1. 1

    Upload .fits file

    Select your FITS file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.

  2. 2

    Choose .cur

    Set CUR as the output format. The converter uses optimal settings based on the FITS→CUR conversion profile.

  3. 3

    Convert

    The server-side engine decodes your FITS file and re-encodes it as CUR. Processing time depends on file size and complexity.

  4. 4

    Download result

    Grab your converted .cur file. Multiple output files can be downloaded together.

What Happens When You Convert FITS to CUR

Your FITS file is decoded and re-encoded as CUR.

1

Your FITS file is uploaded and validated

2

The file is decoded (parsed into its raw data)

3

The data is re-encoded in CUR format

4

The converted file is ready for download

Format Comparison

.fits

FITS

.fits file

Extension.fits
MIME Typeimage/fits
CategoryImage
.cur

CUR

.cur file

Extension.cur
MIME Typeimage/x-icon
CategoryImage

Should You Convert FITS to CUR?

When to Convert

  • When you need a CUR file

Frequently Asked Questions

What is the difference between FITS and CUR?

FITS is a widely used file format. CUR is a widely used file format.

Does FITS to CUR conversion affect quality?

Converting FITS to CUR maintains high quality with CocoConvert's optimised encoder settings.

Which format has better compression, FITS or CUR?

FITS is a common image format. CUR is widely supported. The better choice depends on whether you prioritize file size or quality.

How long does FITS to CUR conversion take?

Most conversions finish in seconds. Larger files or complex image content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.

Is FITS or CUR better for long-term storage?

Both formats use lossy compression, so consider keeping your original source file for long-term storage.

Powered by — installed on our conversion workers
ImageMagick 7.1 (locked policy.xml)libheif 1.xlibjxl-tools 0.11.xLibRaw / dcraw_emu 0.21.xSharp 0.34.x (Node)

Versions are pinned in our worker Dockerfile and re-built via CI on every change.