Free tools › Free FHIR R4 JSON viewer

Free FHIR R4 JSON viewer

Paste a FHIR R4 resource or Bundle and browse every element with plain-English notes and structural checks. Free, no account.

Privacy: Runs in your browser and nothing is uploaded, but this web version is for test data only: don't paste PHI. To work with real messages, use the same tool in the free downloadable Sandbox, which runs fully offline on your computer.

What it does

• Element tree for any R4 resource or Bundle
• Plain-English notes for common elements
• Structural checks with fix tips
• Sample resources to explore

Questions

Is the FHIR viewer free?

Yes, with no account.

Can I paste real patient data?

Not into the web version. The free Sandbox download includes an offline copy for real data.

All tools are free. Is the Sandbox download safe?