HED online tools

Welcome to the HED online tools documentation! This package provides web-based interfaces and REST API services for working with Hierarchical Event Descriptors (HED) - a standardized framework for annotating events and experimental metadata in neuroscience and beyond.

What is HED?

HED is a standardized vocabulary and annotation framework designed to systematically describe events in experimental data, particularly neuroimaging and behavioral data. It’s integrated into major neuroimaging standards:

  • BIDS (Brain Imaging Data Structure)

  • NWB (Neurodata Without Borders)

Key features

  • Web interface: Browser-based tools for easy HED operations

  • REST API: Programmatic access to all HED services

  • Validation: Verify HED annotations against official schemas

  • Transformation: Convert between different HED formats

  • BIDS support: Process BIDS datasets with HED annotations

  • Multiple formats: Work with JSON sidecars, TSV files, Excel spreadsheets

  • Schema operations: Validate, convert, and compare HED schemas

  • Docker support: Easy local deployment with Docker containers

Getting started

Using HED online tools

Local deployment

API documentation

Indices and tables