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FITS Support Office

FITS File Verifier

Use this web form to verify the format of any FITS data file on your local computer or on the Web. The file will be uploaded and scanned for any violations of the requirements specified in Version 3.0 of the FITS Standard document. You may also download this FITSverify program and run it locally.


Enter either a local FITS file name:

Name of the FITS file to be verified:

Maximum allowed file size = 40 MB.
'gzip' or 'zip' compress large files before verifying to minimize upload times.



Or, enter the FTP or HTTP URL to the FITS file:

URL of the FITS file to be verified:



The fv FITS file viewer and editor may be used to examine the contents of the FITS file in greater detail.

This form uses the FITSverify utility program that is freely available from the HEASARC. When installed locally, FITSverify may be used to verify multiple files at once in batch mode.

Please report any problems or questions about FITSverify to the ftools help desk.


Last revised: Wednesday, 27-Oct-2010 15:59:37 EDT
Contact us: fits @ fits.gsfc.nasa.gov
Hosted by: The HEASARC (High Energy Astrophysics Science Archive Research Center)
Responsible NASA representative: Dr. William D. Pence
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