WEBKNOSSOS

Visualize, share and annotate your large 3D images online.
#opensource #volumeEM #bioimageanalysis #connectomics

2026-01-19

Feature highlight 🚀 Multiple points for split operation

The proofreading tool now supports multiple reference points: define several segments around a desired split, and the tool automatically selects an optimal split point.

Get more reliable splits with less manual tweaking!

2026-01-15

Feature highlight 🚀 Viewport rotation

Rotate orthogonal viewports freely in WEBKNOSSOS to trace objects from the best angle. Use keyboard shortcuts to rotate each viewport. See the documentation (docs.webknossos.org) for the full list of shortcuts.

Try rotating viewports in WEBKNOSSOS now to accelerate your tracing workflow!

2025-10-09

🌟Enhancements🌟

The proofreading tool got smarter: you can now define multiple segments around a desired split, and it will automatically pick the optimal split point.

2025-10-07

Tuesday tips 🐾 for Beginners

Need to undo changes and return to a previous version? Simply access the menu and select 'Restore older version’.

Check out the Youtube Playlist for more tips: youtube.com/playlist?list=PLpi

2025-09-18

🌟Enhancements🌟

Shared annotations got a big upgrade: they now update live—see your collaborators’ changes as they happen. Simultaneous editing is on the horizon 👀

2025-09-16

Tuesday tips 🐾 for Beginners

Sort your trees by name or by creation time by clicking the button in the right sidebar.

Check out the Youtube Playlist for more tips: youtube.com/playlist?list=PLpi

2025-09-02

Tuesday tips 🐾 for Beginners

Did you know about the 3D viewport settings? You can choose whether to display the planes, only show their wireframes, or display them along with the data. You also have the option to show the dataset border and the layer borders

Check out the Youtube playlist for more tips: youtube.com/playlist?list=PLpi

2025-08-14

🌟Enhancements🌟

ICYMI: Webknossos viewports are now rotatable.

Use keyboard shortcuts to rotate the orthogonal viewport. Try Shift + Left, Shift + Right, Shift + Up and Shift + Down.

Learn more about keyboard shortcuts: docs.webknossos.org/webknossos

2025-08-12

Tuesday tips 🐾 for Beginners

Did you know you can use the shortcuts K and L to toggle the sidebars in WEBKNOSSOS? You can also use '.' to maximize a viewport.

Check out the Youtube Playlist for more tips: youtube.com/playlist?list=PLpi

2025-07-31

🌟Big new feature🌟

Rotate the viewports. You can now freely rotate the orthogonal viewports. Trace your objects in the best angle.

2025-07-29

Tuesday tips 🐾 for Beginners

Did you know that you can toggle crosshairs and scalebars on or off in WEBKNOSSOS? Simply go to the settings in the left sidebar and customize your view.

Check out the Youtube Playlist for more tips: buff.ly/M3nCDIL

2025-07-24

🌟Enhancement🌟

If you copy the position to your clipboard (e.g. from Webknossos, an email from a colleague or your notes), you can now paste the position anywhere in the Webknossos UI. No need to activate the position control.

2025-07-22

Tuesday tips 🐾 for Beginners

Did you know you can create bounding boxes? They help define regions of interest, export specific data, and more!

Check out the Youtube Playlist for more tips: youtube.com/playlist?list=PLpi

2025-07-17

🌟Enhancement🌟

Make the 3D meshes of your segments translucent. Great for revealing inner segments, such as as cell organelles. Also, translucent meshes look really cool 😎

2025-07-15

Tuesday tips 🐾 for Beginners

Did you know you can customize skeleton colors? Let WEBKNOSSOS choose a color for your tree or select your preferred shade by right-clicking and choosing 'Change Tree Color'.

Check out the Youtube Playlist for more tips: youtube.com/playlist?list=PLpi

2025-06-26

🌟Enhancement🌟

Only show selected segments. Toggle the “Hide unlisted segments” setting to pick which segments will be shown.

2025-06-24

Tuesday tips 🐾 for Pros

Did you know you can easily decide whether you want to overwrite while annotating? For example, when using the eraser, just press “Shift” to remove only the active segment. This shortcut also works for the brush and lasso!

Check out the Youtube playlist for more tips: youtube.com/playlist?list=PLpi

2025-06-05

🌟Enhancement🌟

Navigate WEBKNOSSOS faster with the new Command Palette. It allows you to streamline your workflow by quickly searching for tools, jumping to specific datasets, and accessing key features with just a few keystrokes.

Activate with 'Ctrl/Cmd + P'

2025-06-03

Tuesday tips 🐾 for Pros

While using the brush, press and hold ‘Shift’ to temporarily activate the segment picker - or ‘Shift + Ctrl’ to switch to the eraser.

Check out the Youtube playlist for more tips: youtube.com/playlist?list=PLpi

2025-04-08

Tuesday tips 🐾 for Pros

To move a bounding box, simply make sure the bounding box tool is activated, hold ‘Ctrl’ and drag the box to reposition it.

Client Info

Server: https://mastodon.social
Version: 2025.07
Repository: https://github.com/cyevgeniy/lmst