FHIR 2026.2 Supports Binary Content Type Response: Direct File Retrieval for PDFs and More

Details

This feature is particularly useful during the FHIR Read operation when the returned content is a binary resource with a specific MIME type. Previously, even if the client needed a file like a PDF, the data was typically provided within a JSON wrapper and required Base64 encoding for retrieval. With the 2026.2 update, by setting the appropriate MIME type (e.g., application/pdf) in the REST HTTP Accept header, it is now possible to receive the raw binary content itself directly as the response, bypassing the need for the FHIR resource structure. This improvement significantly enhances developer experience and implementation efficiency by eliminating extra steps like JSON parsing or Base64 decoding on the client side. It represents a key advancement that increases practical data usability while adhering to FHIR standards.