WEBKNOSSOS

The blog

Tutorials, new features, and stories from the labs using WEBKNOSSOS to explore, annotate, and share large 3D microscopy data.

INDEX / 39 ARTICLES

TUTORIAL

Making a flythrough video of your data with WEBKNOSSOS and your AI coding agent

Making a flythrough video of your data with WEBKNOSSOS and your AI coding agent

With your data in WEBKNOSSOS, you can create beautiful, professional-looking videos, which has become much easier now that we have AI coding agents (e.g. Claude).

Sep 2026

Sep 2026

Sep 2026

FEATURE

Maximum Intensity Projection now in WEBKNOSSOS

Maximum Intensity Projection now in WEBKNOSSOS

Maximum Intensity Projection (MIP) renders your dataset directly in the 3D viewport. It is similar to meshes, giving you a spatial view of your data, but it applies to any image layer rather than only segmentations, and it needs no precomputation.

Aug 2026

Aug 2026

Aug 2026

INTERVIEW

Teaching Cell Biology with Real EM Data: An Interview with Ahmed Elewa, Miami University

Teaching Cell Biology with Real EM Data: An Interview with Ahmed Elewa, Miami University

WEBKNOSSOS allows researchers and students to explore large 3D microscopy datasets directly in the browser. We spoke with Ahmed Elewa, assistant professor at Miami University, about how he used WEBKNOSSOS to teach cell biology through a hands-on course project.

May 2026

May 2026

May 2026

CASE STUDY

From Beamline to Browser: Automating High-Throughput X-ray Imaging with WEBKNOSSOS at EMBL P14

From Beamline to Browser: Automating High-Throughput X-ray Imaging with WEBKNOSSOS at EMBL P14

At the European Molecular Biology Laboratory (EMBL) in Hamburg, an X-ray imaging team has established a fully automated pipeline that transfers reconstructed synchrotron X-ray tomography datasets directly into a browser-based 3D environment powered by WEBKNOSSOS.

Mar 2026

Mar 2026

Mar 2026

CASE STUDY

Custom model training for mitochondria detection in WEBKNOSSOS

Custom model training for mitochondria detection in WEBKNOSSOS

We tested the AI features of WEBKNOSSOS on a real-world volume EM dataset of Mouse Cortex. We trained a custom instance segmentation model and deployed it across the full 140GB volume.

Feb 2026

Feb 2026

Feb 2026

EXERCISES

Cell biology exercises with WEBKNOSSOS

Cell biology exercises with WEBKNOSSOS

With these exercises, students will explore the brain in 3D at high resolution, identify cell processes, and learn to recognize synapses.

Oct 2024

Oct 2024

Oct 2024

EXERCISES

Neuroanatomy exercises with WEBKNOSSOS

Neuroanatomy exercises with WEBKNOSSOS

These exercises, designed by Prof. Berson. from Brown University, will help your students get familiar with connectomic analysis of retinal neurons.

Sep 2024

Sep 2024

Sep 2024

FEATURE

AI Quick-Select Tool

AI Quick-Select Tool

The quick-select tool now works in 3D and can predict up to 16 sections! Moreover, a simple click now suffices to segment a cell - no need to draw a rectangle.

Sep 2024

Sep 2024

Sep 2024

STORY

Printing neurons in 3D from WEBKNOSSOS

Printing neurons in 3D from WEBKNOSSOS

For the Connectomics conference, we wanted to create neuron sculptures to showcase the beauty and complexity of the brain through art. As many of you know, the shape and architecture of neurons are extremely challenging to reproduce.

Jul 2024

Jul 2024

Jul 2024

INTERVIEW

Pioneering Accessibility in Retinal Connectomics

Pioneering Accessibility in Retinal Connectomics

In this interview with Prof. David Berson from Brown University, you will learn about his pioneering research on the retina, how EM-based connectomics has influenced his work, and get insights into his latest project.

May 2024

May 2024

May 2024

VIDEO

A story about collaboration, continents, and the struggles of big data

A story about collaboration, continents, and the struggles of big data

Embark on a journey with two scientists in London as they navigate the challenges of managing large datasets from a serial electron microscope.

Apr 2024

Apr 2024

Apr 2024

INTERVIEW

Behind the scenes of WEBKNOSSOS

Behind the scenes of WEBKNOSSOS

Philipp Otto has been one of the principal developers of WEBKNOSSOS for a decade. In this interview, he will share his story and insights from behind the scenes of developing such a product, including the challenges and the enjoyment it brings.

Feb 2024

Feb 2024

Feb 2024

FEATURE

Feature highlights of WEBKNOSSOS from 2023

Feature highlights of WEBKNOSSOS from 2023

2023 was a year full of new features for WEBKNOSSOS, with exciting additions: from AI-powered quick-select tools to improved touch device support, here are the standout features we want to make sure you haven’t missed!

Jan 2024

Jan 2024

Jan 2024

FEATURE

Creating animations with WEBKNOSSOS

Creating animations with WEBKNOSSOS

We are excited to introduce a new feature in WEBKNOSSOS for creating professional-looking animations of your data.

Dec 2023

Dec 2023

Dec 2023

FEATURE

Segment Statistics in WEBKNOSSOS

Segment Statistics in WEBKNOSSOS

You can now access segment statistics in WEBKNOSSOS! The segments statistics include essential information like cell count, the volume of the segments, their positions, as well as their bounding boxes.

Oct 2023

Oct 2023

Oct 2023

FEATURE

Introducing 4D datasets for time series in WEBKNOSSOS

Introducing 4D datasets for time series in WEBKNOSSOS

WEBKNOSSOS added support for time series datasets, opening up a new dimension in your data exploration. Now, you can not only view your data in 3D but also in 4D, adding the element of time.

Sep 2023

Sep 2023

Sep 2023

TUTORIAL

Showing and annotating data with an iPad

Showing and annotating data with an iPad

Using WEBKNOSSOS on an iPad offers two key advantages: seamless data visualization on the go and intuitive annotation with the Apple Pencil. Discover in this tutorial how to show and annotate your data with an iPad.

Aug 2023

Aug 2023

Aug 2023

TUTORIAL

Pen Tablets and WEBKNOSSOS

Pen Tablets and WEBKNOSSOS

In this tutorial, we share helpful tips on using pen tablets for efficient data annotation with WEBKNOSSOS. You will learn to program your tablet and pen buttons to match the WEBKNOSSOS shortcuts and we will show you a complete annotation workflow.

Jul 2023

Jul 2023

Jul 2023

INTERVIEW

Comparative Connectomic Studies among Species

Comparative Connectomic Studies among Species

Sahil Loomba is a post-doctoral research scientist at the Max Planck Institute for Brain Research. In this interview, he will discuss the research’s origins, the encountered challenges, the tools and techniques employed, and his perspective on the future development of comparative connectomics across not only species, but also ages and disease models.

Jul 2023

Jul 2023

Jul 2023

FEATURE

New AI-based quick segment tool in WEBKNOSSOS

New AI-based quick segment tool in WEBKNOSSOS

We are excited to announce the integration of Meta’s new AI model, SAM: Segment Anything, into WEBKNOSSOS! Learn how to make the best out of the AI option in WEBKNOSSOS.

Jun 2023

Jun 2023

Jun 2023

TUTORIAL

Automation and interoperability

Automation and interoperability

In this tutorial, we will learn how to download data as a Tiff stack with the WEBKNOSSOS UI, how to automate this process, and how to incorporate an N5 remote dataset into WEBKNOSSOS.

Jun 2023

Jun 2023

Jun 2023

TUTORIAL

Volume annotations with WEBKNOSSOS

Volume annotations with WEBKNOSSOS

In this tutorial, we will explore the annotation features of WEBKNOSSOS. We will cover everything from opening and annotating a published dataset to utilizing both basic and advanced annotation tools.

May 2023

May 2023

May 2023

TUTORIAL

Data sharing with WEBKNOSSOS

Data sharing with WEBKNOSSOS

In this tutorial, you will discover how to efficiently manage and share your data.

Apr 2023

Apr 2023

Apr 2023

TUTORIAL

Self-hosted data for WEBKNOSSOS

Self-hosted data for WEBKNOSSOS

This tutorial explains how to store data externally by converting data into OME-Zarr and setting up a static file server for use with WEBKNOSSOS.

Feb 2023

Feb 2023

Feb 2023

FEATURE

Organize your data in folders

Organize your data in folders

The folder structure in WEBKNOSSOS allows you to have your datasets structured, organized, and easily accessible.

Feb 2023

Feb 2023

Feb 2023

STORY

Rebranding WEBKNOSSOS

Rebranding WEBKNOSSOS

Follow our journey of redesigning the branding of WEBKNOSSOS to align it more closely with our identity and values.

Feb 2023

Feb 2023

Feb 2023

FEATURE

Feature highlights of WEBKNOSSOS from 2022

Feature highlights of WEBKNOSSOS from 2022

Read all about the top features of 2022: quick-select, interpolation tool, collaborative annotations, and more.

Feb 2023

Feb 2023

Feb 2023

EXPERIMENT

Comparing Array Tomography with Serial Block-face Electron Microscopy

Comparing Array Tomography with Serial Block-face Electron Microscopy

Array tomography and Serial Block-face Electron Microscopy are two microscopy techniques that work in a similar way and are hard to understand. We playfully explained and compared these techniques using a fig (AT) and a tomato (SBEM).

Jan 2023

Jan 2023

Jan 2023

EXPERIMENT

Reconstructing a kiwi fruit… with SBEM (sort of)

Reconstructing a kiwi fruit… with SBEM (sort of)

How would you explain SBEM/volume EM and 3D reconstruction to your grandparents? With a camera, a knife, and a kiwi fruit.

Jan 2023

Jan 2023

Jan 2023

TUTORIAL

Data Streaming with WEBKNOSSOS Libs

Data Streaming with WEBKNOSSOS Libs

Today, we would like to highlight some features and quality of life improvements WEBKNOSSOS acquired over the summer. They will accelerate your workflows and make the annotating of EM data easier.

Nov 2022

Nov 2022

Nov 2022

TUTORIAL

Using Zarr Datasets with WEBKNOSSOS

Using Zarr Datasets with WEBKNOSSOS

This tutorial explains how to load any Zarr-format-based datasets into WEBKNOSSOS. We support reading Zarr dataset from the local file system, cloud providers such as S3 and Google Cloud, as well as through any web server over HTTP.

Oct 2022

Oct 2022

Oct 2022

TUTORIAL

Zarr Streaming from WEBKNOSSOS

Zarr Streaming from WEBKNOSSOS

In this blog post, we will share some progress on streaming any dataset from WEBKNOSSOS to compatible third-party programs through the Zarr interface.

Sep 2022

Sep 2022

Sep 2022

FEATURE

Summer update: annotate faster than ever with these new features

Summer update: annotate faster than ever with these new features

Today, we would like to highlight some features and quality of life improvements WEBKNOSSOS acquired over the summer. They will accelerate your workflows and make the annotating of EM data easier.

Aug 2022

Aug 2022

Aug 2022

INTERVIEW

Interview with Carles Bosch on Correlative Multimodal Imaging

Interview with Carles Bosch on Correlative Multimodal Imaging

Carles Bosch, principal laboratory research scientist at the Sensory Circuits and Neurotechnology Laboratory of the Francis Crick Institute, explains his research on glomerular column circuits in the mouse olfactory bulb.

Jul 2022

Jul 2022

Jul 2022

INTERVIEW

Reconstructing connectomes from human, macaque, and mouse cortex with Voxelytics

Reconstructing connectomes from human, macaque, and mouse cortex with Voxelytics

Daniel Werner, data scientist at scalable minds, tells us about the analysis and reconstruction of 9 vEM datasets he contributed to for a comparative connectomic study among species, by the Max Planck Institute for Brain Research.

Jul 2022

Jul 2022

Jul 2022

FEATURE

How to speed up your annotations using the volume interpolation tool in WEBKNOSSOS

How to speed up your annotations using the volume interpolation tool in WEBKNOSSOS

In this tutorial, we will tell you about the interpolation feature. Draw on one slice, move forward by a few slices, draw again… and WEBKNOSSOS will interpolate the segments between the two annotated slices.

Jun 2022

Jun 2022

Jun 2022

INTERVIEW

How to debug a synapse classifier with WEBKNOSSOS

How to debug a synapse classifier with WEBKNOSSOS

Today, we will have a chat with one of our colleagues: Valentin Pinkau. As an experienced data scientist specializing in connectomics, he has some interesting insights to share.

Oct 2021

Oct 2021

Oct 2021

CASE STUDY

Automated Neuron Reconstruction

Automated Neuron Reconstruction

With the recent publication of the “Dense connectomic reconstruction in layer 4 of the somatosensory cortex“ paper by the Max-Planck-Institute for Brain Research, we showcase WEBKNOSSOS and the ML reconstruction pipeline Voxelytics.

Aug 2021

Aug 2021

Aug 2021

TUTORIAL

Machine learning workflows for large-scale reconstruction projects

Machine learning workflows for large-scale reconstruction projects

Here, we share some tips on how to reconstruct biological objects (e.g. neurons) from tera- or peta-scale image datasets.

Jul 2021

Jul 2021

Jul 2021

WEBKNOSSOS

Annotate, proofread, and analyze large 3D microscopy datasets in the browser.

WEBKNOSSOS

Annotate, proofread, and analyze large 3D microscopy datasets in the browser.