# FHIR Toolbox

> Free, browser-based FHIR utilities and learning resources for healthcare developers and clinicians. All tools run client-side — health data never leaves the device.

FHIR Toolbox is a collection of zero-server-processing tools for working with HL7 FHIR R4/R5 resources, plus a Knowledge Hub of tutorials and implementation guides. Built and maintained by Omindra Labs.

## Tools

- [FHIR to CSV/Excel](/fhir-to-csv): Convert FHIR bundles to CSV or Excel.
- [FHIR Validator](/validator): Validate FHIR R4/R5 resources against the spec.
- [JSON Prettifier](/prettifier): Format and syntax-highlight FHIR JSON.
- [Resource Visualizer](/visualizer): Tree view of FHIR resources.
- [PHI Anonymizer](/anonymizer): De-identify PHI/PII in FHIR resources.
- [FHIR Diff](/fhir-diff): Compare two FHIR resources.
- [Query Builder](/query-builder): Build FHIR search queries.
- [Reference Resolver](/reference-resolver): Resolve and visualize references.
- [Code Lookup](/code-lookup): Search LOINC, SNOMED, ICD-10, CPT.
- [Bundle Builder](/bundle-builder): Assemble FHIR bundles.
- [FHIR Mapper](/fhir-mapper): Map CSV/JSON to FHIR resources.
- [Narrative Generator](/narrative-generator): Generate human-readable narratives.
- [Extension Builder](/extension-builder): Build FHIR extensions.
- [Bulk Data Preview](/bulk-data-preview): Preview NDJSON bulk data.

## Pages

- [Home](/): Overview of all FHIR utilities.
- [FHIR Utilities](/fhir-utilities): Index of utilities.
- [FHIR Tools](/fhir-tools): Index of tools.
- [FHIR Library](/fhir-library): Library overview.
- [Knowledge Hub](/knowledge-hub): Tutorials and guides for HL7 FHIR.
- [About](/about): About Omindra Labs and the project.
- [Contact](/contact): Get in touch.

## Optional

- [Privacy](/privacy): Privacy policy.
- [Terms](/terms): Terms of service.