21–27 Sept 2026
EuXFEL Lighthouse
Europe/Berlin timezone

Custom and efficient visualizations in the web for scientific data with H5Web

23 Sept 2026, 15:00
15m
EuXFEL Lighthouse Auditorium

EuXFEL Lighthouse Auditorium

Oral Data Visualisation Data Visualization

Speaker

Loic Huder (ESRF)

Description

HDF5 files are common at large-scale facilities. At ESRF, they have become the standard format provided to users. However, accessing and visualizing the data they contain can be challenging, as HDF5 files are binary and organize information in hierarchical groups and datasets.

H5Web is an open-source, web-based viewer developed at ESRF to explore HDF5 files and generate efficient visualizations with WebGL. It supports the NeXus standard, enabling specific views for scientific data. Files can be accessed from remote servers, loaded locally, or even opened directly in the browser for immediate inspection.

At a previous NOBUGS conference, I presented several use cases for H5Web:

  • myHDF5: viewing files by uploading them directly in the browser
  • vscode-h5web: reading HDF5 files within VS Code
  • ESRF Data Portal: allowing users to explore their data without downloading it

This time, I will focus on the ESRF Data Portal integration. I’ll demonstrate how we leverage H5Web’s modular architecture to build custom visualizations for specific techniques, and how we have introduced new features by aligning with complementary standards such as silx and NetCDF.

Authors

Axel Bocciarelli (ESRF) Loic Huder (ESRF) Thomas Vincent (ESRF)

Presentation materials

There are no materials yet.