Free · Open source · Runs in your browser
Parse and diff HL7 v2.5.1 messages, view and generate DICOM, build Mirth transformers, simulate modality worklists and convert to FHIR R4. No install, no account, nothing to set up.
MSH|^~\&|EPIC|MERCY_GEN|PACS|…|2.5.1 EVN|A01|20260917091400 PID|1||MRN78432^^^MERCY^MR||DOE^JANE^A PV1|1|I|4N^403^A||||SMITH^JAMES OBR|1|ORD-78432||CT^CT ABDOMEN # parse, diff and map it, field by field
(0010,0010) PatientName DOE^JANE^A (0010,0020) PatientID MRN78432 (0008,0060) Modality CT (0008,1030) StudyDescription CT ABDOMEN (0020,000D) StudyInstanceUID 1.2.840…3719 # view, edit tags and re-export
{ "resourceType": "Patient", "identifier": [{ "value": "MRN78432" }], "name": [{ "family": "Doe", "given": ["Jane"] }] } # convert v2.5.1 ↔ R4 and see what the mapping drops
The toolkit
Each one is a standalone page with sample data built in, so you can try it before loading your own files. Select a screenshot to see it full size, on desktop and on a phone.
Clinical messaging
Breaks an HL7 v2.5.1 message into segments, fields and components, with structured, highlighted and JSON views. Also reads FHIR R4 JSON and XML.
Data validation
Compares two HL7 v2.5.1 messages side by side, segment by segment and field by field.
Workflow integration
Reads DICOM tags and generates an HL7 v2.5.1 ORM^O01 radiology order, with editable overrides and a tag-to-field mapping table.
Test data
Generates DICOM files from form fields and custom tags (optionally from an uploaded image), and reads them back in a tag browser.
Medical imaging
Opens DICOM files and folders, shows images with window/level, pan, zoom and measurement, and edits tags before re-export.
Modality worklist
Runs Modality Worklist C-FIND queries against a simulated worklist, or against a DICOMweb (QIDO-RS) server you configure, and shows the protocol log.
External mode sends queries to the DICOMweb URL you enter.
Interface engineering
Map HL7 v2.5.1 fields by dragging one onto another and get a Mirth Connect transformer back: the JavaScript, a channel XML block and a live preview. Ships with 33 ready-made recipes.
Interoperability
Converts HL7 v2.5.1 messages (ADT, ORM, ORU, SIU, ACK) to FHIR R4 message Bundles and back, with a field-level mapping trace, a lossiness report and a round-trip check.
Reference
A reference for PACS administrators: the order-to-image timeline, HL7 ADT/ORM/ORU, DICOM SCU/SCP roles, DIMSE, DICOMweb, tags, ports and troubleshooting.
How it works
Every tool is a single static HTML page served from GitHub Pages. No install, no account and no build step.
Every tool has a sample or demo button, so you can see it work before you paste a message or drop a DICOM file.
Files and messages are parsed in your browser and are not uploaded anywhere. The site sets no cookies and runs no analytics.
Open source
Read the code, open an issue or fork it. Everything here is on GitHub under @coffeemilktea.
Single-file browser tools for HL7 v2.5.1 and DICOM: parser, diff, DICOM viewer and tag editor, generator, ORM^O01 order builder and MWL C-FIND simulator.
Live siteThis site: the landing page, the HL7 v2.5.1 ↔ FHIR R4 converter and the radiology transaction handbook.
Live siteGenerate Mirth Connect transformers from HL7 v2.5.1 messages by dragging fields around. Single file, no dependencies.
Live siteMCP server giving LLMs structured access to the HL7 v2.5.1 standard: segments, message structures, code tables, a parser and a validator.
MCP server for the HL7 v2.5.1 → FHIR R4 crossing: field, datatype and code-value mappings, plus whole-message conversion with a warning for anything it cannot map faithfully.