napari 0.6.6#

Wed, Oct 15, 2025

We’re happy to announce the release of napari 0.6.6! 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).

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

napari follows EffVer (Intended Effort Versioning); this is a Meso release containing awesome new features, but some effort may be needed when updating previous projects to use this version.

Highlights#

This a small bugfix release, following up the changes in 0.6.5.

Zooming in the dark?#

In the previous release we accidentally made the zoom tool added in v0.6.3 invisible. Whoops! No worries, it’s back 🔍.

“Open with napari”#

When using the napari bundle, it will now detect when a file can be opened with napari based on the extension. This allows you to use the open with > menu from your operative system to open files with napari!

image showing a context menu with the the option available

PS: Since we did quite a few changes behind the scenes on this new version of the bundle, you might experience some issues. Don’t hesitate to open an issue or contact us on zulip if you do!

Improvements#

  • Update menuinst configuration with file type associations (#8359)

Bug Fixes#

  • Fix shape selection in a single plane when shapes are on multiple planes (#8335)

  • Fix invisible zoom box (#8344)

  • Bump console version to fix ipykernel bug (#8360)

Build Tools#

  • Bump console version to fix ipykernel bug (#8360)

Documentation#

  • Update release notes v0.6.6 (docs#868)

  • Add info about manual trigger of conda update to release guide (docs#859)

  • Fix version switcher for 0.6.5 (docs#861)

  • Remove trailing comma in version switcher json (docs#862)

  • Add release notes for v0.6.6 (docs#866)

  • Update release notes v0.6.6, the revenge (docs#869)

Other Pull Requests#

  • Add a new attr_to_settr utility function and simplify layer control widgets layer to widget setup (#8274)

  • [pre-commit.ci] pre-commit autoupdate (#8275)

  • ci(dependabot): bump the actions group with 9 updates (#8324)

  • Delay settings import to avoid circular import (#8327)

  • Add info about conda forge manual trigger to release checklist (#8328)

  • Add sponsor badge and reorganize badges into groups (#8343)

  • Fix vispy error traceback (#8346)

  • Migrate license settings to modern standards (#8350)

7 authors added to this release (alphabetical)#

(+) denotes first-time contributors 🥳

8 reviewers added to this release (alphabetical)#

(+) denotes first-time contributors 🥳