Read / write access to some common neuroimaging file formats

This package provides read +/- write access to some common medical and neuroimaging file formats, including: ANALYZE (plain, SPM99, SPM2 and later), GIFTI, NIfTI1, NIfTI2, MINC1, MINC2, MGH and ECAT as well as Philips PAR/REC. We can read and write FreeSurfer geometry, annotation and morphometry files. There is some very limited support for DICOM. NiBabel is the successor of PyNIfTI.

The various image format classes give full or selective access to header (meta) information and access to the image data is made available via NumPy arrays.


Current documentation on nibabel can always be found at the NIPY nibabel website.

Mailing Lists

Please send any questions or suggestions to the neuroimaging mailing list.


Install nibabel with:

pip install nibabel

You may also be interested in:


Nibabel is licensed under the terms of the MIT license. Some code included with nibabel is licensed under the BSD license. Please see the COPYING file in the nibabel distribution.


See also the Developer documentation page for development discussions, release procedure and more.

Authors and Contributors

The main authors of NiBabel are Matthew Brett, Michael Hanke, Ben Cipollini, Marc-Alexandre Côté, Chris Markiewicz, Stephan Gerhard and Eric Larson. The authors are grateful to the following people who have contributed code and discussion (in rough order of appearance):

  • Yaroslav O. Halchenko
  • Chris Burns
  • Gaël Varoquaux
  • Ian Nimmo-Smith
  • Jarrod Millman
  • Bertrand Thirion
  • Thomas Ballinger
  • Cindee Madison
  • Valentin Haenel
  • Alexandre Gramfort
  • Christian Haselgrove
  • Krish Subramaniam
  • Yannick Schwartz
  • Bago Amirbekian
  • Brendan Moloney
  • Félix C. Morency
  • JB Poline
  • Basile Pinsard
  • Satrajit Ghosh
  • Nolan Nichols
  • Nguyen, Ly
  • Philippe Gervais
  • Demian Wassermann
  • Justin Lecher
  • Oliver P. Hinds
  • Nikolaas N. Oosterhof
  • Kevin S. Hahn
  • Michiel Cottaar
  • Erik Kastman
  • Github user freec84
  • Peter Fischer
  • Clemens C. C. Bauer
  • Samuel St-Jean
  • Gregory R. Lee
  • Eric M. Baker
  • Ariel Rokem
  • Eleftherios Garyfallidis
  • Jaakko Leppäkangas

License reprise

NiBabel is free-software (beer and speech) and covered by the MIT License. This applies to all source code, documentation, examples and snippets inside the source distribution (including this website). Please see the appendix of the manual for the copyright statement and the full text of the license.

Download and Installation

Please find detailed download and installation instructions in the manual.


If you have problems installing the software or questions about usage, documentation or anything else related to NiBabel, you can post to the NiPy mailing list.

Mailing [subscription, archive]

We recommend that anyone using NiBabel subscribes to the mailing list. The mailing list is the preferred way to announce changes and additions to the project. You can also search the mailing list archive using the mailing list archive search located in the sidebar of the NiBabel home page.