napari: a multi-dimensional image viewer for Python

Sofroniew, Nicholas; Lambert, Talley; Bokota, Grzegorz; Nunez-Iglesias, Juan; Sobolewski, Peter; Sweet, Andrew; Gaifas, Lorenzo; Evans, Kira; Burt, Alister; Doncila Pop, Draga; Yamauchi, Kevin; Weber Mendonça, Melissa; Rodríguez-Guerra, Jaime; Liu, Lucy; Buckley, Genevieve; Vierdag, Wouter-Michiel; Anderson, Ashley; Monko, Timothy; Willing, Carol; Rodríguez-Reza, Carlos M.; Royer, Loic; Can Solak, Ahmet; Harrington, Kyle I. S.; Abramo, Jacopo; Ahlers, Jannis; Ajina, Sesan; Althviz Moré, Daniel; Ambroset, Mélodie; Amsalem, Oren; Andò, Edward; Annex, Andrew; Archit, Anwai; Aronssohn, Constantin; Balzaretti, Filippo; Boone, Peter; Bestak, Kresimir; Bragantini, Jordão; Bunten, David; Bussonnier, Matthias; Caporal, Clément; Chazotte, Margot; Coccimiglio, Ian; Čočková, Zuzana; Defauw, Arne; Czasak, Sara; Eglinger, Jan; Eisenbarth, Andreas; Freeman, Jeremy; Fukai T., Yohsuke; Garnett, Arbor; Gohlke, Christoph; Gunalan, Kabilar; Halchenko, Yaroslav Olegovich; Har-Gil, Hagai; Harfouche, Mark; Hilsenstein, Volker; Huijben, Teun A.P.M.; Hutchings, Katherine; Kawai, Hiroki; Kozar, Robert; Lauer, Jessy; Le Meur-Diebolt, Samuel; Lefebvre, Austin E. Y. T.; Lichtner, Gregor; Liu, Hanjin; Liu, Ziyang; Lowe, Alan; Malin-Mayor, Caroline; Marconato, Luca; Martin, Sean; McGovern, Abigail; Migas, Lukasz; Miller, Nadalyn; Miñano, Sofía; Muñoz, Hector; Müller, Jan-Hendrik; Nauroth-Kreß, Christopher; Newstein, Peter; Obenhaus, Horst A.; Palecek, David; Pape, Constantin; Pellegrini, Yann; Perlman, Eric; Theart, Rensu Petrus; Pevey, Kim; Peña-Castellanos, Gonzalo; Phelps, Jasper; Pierré, Andrea; Pinto, David; Reksoatmodjo, Anthony; Ross, David; Russell, Craig T.; Ryan, James; Saveur, Tom; Schabel, Matthias Christian; Selzer, Gabriel; Sharma, Rupesh; Sheikh, Imad Uddin; Sirmpilatze, Nikoloz; Smith, MB; Smith, Paul; Sofiiuk, Konstantin; Soltwedel, Johannes; Stansby, David; Steuer, Michal; Teo, Wulin; Vanaret, Jules; Wadhwa, Pam; Weigert, Martin; Windhager, Jonas; Winston, Philip; Yu, Qin; Zhang, Liudeng; Zhao, Rubin; Witz, Guillaume; Leomil Zoccoler, Marcelo; Yadav, Aniket Singh; Hinderling, Lucien; Kabde, Omkar; Roald-Arbøl, Mikkel; Rochat, Giliane; Castelli, Filippo Maria; Venugopal, Revathy; Coussoux, Edouard; Seth, Mridul; Becht, Job; Creeten, Christophe; Morais, Sébastien; Bloemsaat, Bas; Kania, Kamil; Liaskas, Ioannis; Hada, Aroj; Nagineni, Venkateswarlu; Naik, Suyash

doi:10.5281/zenodo.22311905

Published September 4, 2026 | Version v0.9.1

Software Open

napari: a multi-dimensional image viewer for Python

1. Chan Zuckerberg Initiative
2. Harvard Medical School
3. napari; University of Warsaw, Faculty of Mathematics, Informatics, and Mechanics
4. Monash eResearch Centre, Monash University
5. The Jackson Laboratory
6. napari
7. MRC-LMB
8. Monash University
9. Iber Lab - ETH Zürich
10. Quansight
11. Quansight Labs
12. European Molecular Biology Laboratory, Genome Biology Unit, Heidelberg, Germany
13. University of Minnesota — Twin Cities
14. Willing Consulting
15. Kyoto University
16. Chan Zuckerberg Biohub
17. Leibniz-IPHT, Jena, Germany
18. iLABS, Inc.
19. INRAE, Nantes, France
20. Harvard Medical School, BIDMC
21. EPFL Center for Imaging
22. SETI Institute/NASA ARC
23. Georg-August-Universität Göttingen
24. University of California, Santa Cruz
25. Heidelberg University, Germany
26. University of Colorado Anschutz
27. Laboratory for Optics and Biosciences, Ecole Polytechnique, INSERM, CNRS, Palaiseau, France
28. Unaffiliated
29. Imaging Methods Core Facility at Biocev, Charles University
30. Flemish Institute for Biotechnology
31. Friedrich Miescher Institute for Biomedical Research (FMI), Basel (Switzerland)
32. EMBL Heidelberg, Germany
33. Pioneering Research Institute, RIKEN
34. University of Minnesota
35. University of California, Irvine
36. Dartmouth College
37. Tel Aviv University, Israel
38. Ramona Optics Inc, Durham, North Carolina, USA
39. Biohub, San Francisco
40. University College London
41. The University of Tokyo / LPIXEL Inc.
42. Naval Nuclear Laboratory
43. Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland
44. Calico Life Sciences LLC
45. Universitätsmedizin Greifswald
46. Kobe University
47. Chan Zuckerberg Initiative Foundation
48. UCL & The Alan Turing Institute
49. HHMI Janelia Research Campus
50. EMBL Heidelberg
51. MetaCell
52. Delft University of Technology
53. Apex Systems
54. Sainsbury Wellcome Centre - University College London
55. University of California, Los Angeles
56. University Hospital Würzburg - Institute of Neuroradiology
57. University of Oregon
58. Kavli Institute for Systems Neuroscience at NTNU, Trondheim, Norway
59. Algarve Centre of Marine Sciences (CCMAR)
60. Yikes LLC
61. Department of Electrical and Electronic Engineering, Stellenbosch University
62. EPFL
63. Brown University
64. Translucence Biosystems
65. NanoString Technologies, Inc.
66. European Bioinformatics Institute - European Molecular Biology Laboratory
67. Oregon Health & Science University
68. University of Wisconsin-Madison
69. Mangalmay Institute of Management & Technology
70. Indiana Wesleyan University
71. AI lab for Living Technologies, University Medical Centre Utrecht (The Netherlands)
72. DFG cluster of excellence 'Physics of Life', TU Dresden
73. Houston Methodist Research Institute
74. Aix Marseille University, CNRS, Fresnel, I2M, IBDM, Turing Centre for Living systems
75. TU-Dresden / EPFL
76. ETH Zurich / University of Zurich
77. Tobeva Software
78. European Molecular Biology Laboratory (EMBL)
79. Baylor College of Medicine
80. Chinese Academy of Sciences - SIAT, Shenzhen, China
81. Data Science Lab, University of Bern, Switzerland
82. Katana Labs
83. Galgotias University
84. Institute of Cell Biology, University of Bern, Switzerland
85. Chaitanya Bharathi Institute of Technology
86. University of Bonn
87. Institute of Neuropathology, University Hospital of Zürich
88. Delta Tribe SRL
89. Synopsys, Inc.
90. European Spallation Source
91. Netherlands Forensic Institute
92. QStarsIT
93. Aix Marseille University, IBDM, Turing Centre for Living systems
94. University Hospital Heidelberg
95. Texas A&M University
96. Institute of Science and Technology Austria

napari 0.9.1

Fri, Sep 04, 2026

We're happy to announce the bugfix release of napari 0.9.1! napari is a fast, interactive, multi-dimensional image viewer for Python. It's designed for browsing, annotating, and analyzing large multi-dimensional images. It's built on top of Qt (for the GUI), vispy (for performant GPU-based rendering), and the scientific Python stack (numpy, scipy).

This is a bug fix release, primarily fixing a regression in how dock widgets are resized.

For more information, examples, and documentation, please visit our website, https://napari.org.

napari follows EffVer (Intended Effort Versioning); this is a Micro release containing bug fixes, so we encourage upgrading.

Improvements

Allow single widget in layer controls (#9448)

Bug Fixes

[bug fix] Keep playback in sync when dimension ranges change (#9440)
Fix out-of-sync extent in async mode (#9459)
Revert widget size policy change (#9484)
Revert the str cast of shortcut in bind_shortcut from #9076 (#9488)

Documentation

Prefetch data that are problematic and causing docs build failure (docs#1103)
Fix incorrect image link formatting in 0.9 release notes (docs#1123)
Add 0.9.1 release notes (docs#1128)
Update version switch to set 0.9.1 to default release (docs#1129)
Update README image using the imshow.py example (#9467)

Other Pull Requests

[pre-commit.ci] pre-commit autoupdate (#9445)

5 authors added to this release (alphabetical)

(+) denotes first-time contributors 🥳

Grzegorz Bokota - @Czaki
Juan Nunez-Iglesias - @jni
Lorenzo Gaifas - @brisvag
Matthias Schabel - @matthiasschabel
Suyash Naik - @Suyash-Naik +

10 reviewers added to this release (alphabetical)

(+) denotes first-time contributors 🥳

Aniket - @Aniketsy
Carlos Mario Rodriguez Reza - @carlosmariorr
Grzegorz Bokota - @Czaki
Jacopo Abramo - @jacopoabramo
Juan Nunez-Iglesias - @jni
Lorenzo Gaifas - @brisvag
Matthias Schabel - @matthiasschabel
Peter Sobolewski - @psobolewskiPhD
Suyash Naik - @Suyash-Naik +
Tim Monko - @TimMonko

Notes

If you use this software, please cite it using these metadata.

Files

napari/napari-v0.9.1.zip

Files (4.2 MB)

Name	Size	Download all
napari/napari-v0.9.1.zip md5:324f6aaee34349f79cdad3430f41f26c	4.2 MB	Preview Download

Additional details

Is supplement to: Software: https://github.com/napari/napari/tree/v0.9.1 (URL)

Repository URL: https://github.com/napari/napari

	All versions	This version
Views	59,941	22
Downloads	7,168	0
Data volume	31.5 GB	0 Bytes

napari: a multi-dimensional image viewer for Python

Authors/Creators

Description

napari 0.9.1

Improvements

Bug Fixes

Documentation

Other Pull Requests

5 authors added to this release (alphabetical)

10 reviewers added to this release (alphabetical)

Notes

Files

napari/napari-v0.9.1.zip

Files (4.2 MB)

Additional details

Related works

Software