H5Web is a collection of React components to visualize and explore data. It consists of three packages:

• @h5web/lib: visualization components built with react-three-fiber.
• @h5web/app: a component to explore and visualize data stored in HDF5 (or HDF5-like) files, and data providers to connect this component to various back-end solutions.
• @h5web/h5wasm: an additional data provider that can read HDF5 files straight in the browser.

While H5Web was initially built with the HDF5 format in mind, @h5web/lib visualization components are not tied to HDF5 and can be used to visualize data from any source. Also, @h5web/app lets you write your own data provider and can therefore work with any other hierarchical data format.

If you're after a ready-made solution to view local HDF5 files, take a look at myHDF5, at the Visual Studio Code extension or at the JupyterLab extension.

H5Web's component library, which includes the main visualization components (LineVis, HeatmapVis, etc.) as well as some of their lower-level building blocks (VisCanvas, ColorBar, etc.)

The library is documented in a Storybook site accessible at https://h5web-docs.panosc.eu.

Some examples of usage of @h5web/lib:

Multiple curves	Heatmap with color bar	Gamma vs Power scale

HDF5 viewer component (App) and built-in data providers.

Data providers are components that fetch data from HDF5 back-end solutions and provide this data to the app through React Context. H5Web currently includes three providers, two of which are available in the @h5web/app package:

• H5GroveProvider for server implementations based on h5grove, like jupyterlab-h5web
• HsdsProvider for HSDS

This package includes a third data provider, H5WasmProvider, that can read HDF5 files straight in the browser thanks to the h5wasm library.

The demo app demonstrates the use of the built-in data providers and visualizations. Several demos are available, one per data provider:

• H5GroveProvider
• HsdsProvider
• H5WasmProvider
• MockProvider

Check out these projects from the H5Web ecosystem:

• myHDF5 – online HDF5 file viewing service
• jupyterlab-h5web – H5Web extension for JupyterLab
• vscode-h5web – H5Web extension for Visual Studio Code
• h5grove – core utilities to serve HDF5 file contents

Want to help improve H5Web? We're always looking for feedback, bug reports and feature requests, so don't hesitate to open an issue or start a discussion.

If you'd like to know more about contributing to the codebase, please check out the CONTRIBUTING guide.