Free Healthcare & Developer ToolsFree online tools for healthcare integration developers: HL7 v2 parser, FHIR viewer, X12 EDI 837/835/270/271 parser, C-CDA viewer, NPI lookup, RxNorm, ICD-10, LOINC, LEIE exclusion search, JSON/XML formatters, and more. No login required.Healthcare & integration tools

HL7 Parser — Paste an HL7 v2 message and explore segments, fields, and components with path tooltips.

EDI Parser — Parse X12 EDI (837, 835, 270/271, 999) with tree, readable, loop, compare, and trace views — all in your browser.

FHIR Viewer — Paste FHIR JSON (Resource or Bundle) and explore resource types, references, and bundle entries in a tree view.

CCDA Viewer — Paste C-CDA XML and explore document header, patient demographics, clinical sections, narrative text, and structured entries.

DEA Number Validator — Validate DEA registration number format and check digit (client-side only).

Medicare MBI Validator — Validate Medicare Beneficiary Identifier format per CMS rules (client-side only).

NPI Lookup — Search the CMS NPPES registry by NPI, name, organization, taxonomy, or location.

NUCC Taxonomy Lookup — Look up NUCC Health Care Provider Taxonomy codes by code or specialty name.

RxNorm Lookup — Search NLM RxNorm by drug name, RxCUI, or NDC — view ingredients and package codes.

ICD-10 Lookup — Search ICD-10-CM diagnosis codes by code or description via the NLM Clinical Tables API.

OIG LEIE Search — Search the HHS OIG List of Excluded Individuals and Entities (LEIE) by name, NPI, or location.

ZIP Code Lookup — Look up US city, state, and coordinates from a ZIP or ZIP+4 code.

LOINC Lookup — Search NLM LOINC by code or lab test name — view component, system, and scale.

Sample Message Gallery — Curated HL7, FHIR, X12 EDI, and C-CDA samples with one-click load into parser tools.

Immunization Registry Directory — Browse US state and territorial IIS registries — contacts, websites, and EHR onboarding resources.

Developer utilities

JSON Formatter — Paste JSON on the left and view a pretty-printed version on the right.

XML Formatter — Paste XML on the left and view a formatted version on the right.

Multiline to Single Line — Collapse multiline text into one line — trim lines and join with spaces.

Single Line to Multiline — Split a single line into multiple lines by comma, pipe, tab, or semicolon.

Base64 Encoder / Decoder — Encode text to Base64 or decode Base64 back to plain text.

URL Encoder / Decoder — Percent-encode or decode URL components and query strings.

HTML Entity Encoder — Escape or unescape HTML entities (&, <, >, etc.).

JWT Decoder — Decode JSON Web Token header and payload (signature shown, not verified).

JSON Minifier — Compress JSON by removing whitespace and newlines.

Unix Timestamp Converter — Convert between Unix epoch (seconds/ms) and human-readable dates.

Hash Generator — Compute SHA-256 and SHA-1 hashes of text (runs in your browser).

Query String Parser — Parse URL query strings to JSON or build query strings from JSON or key=value lines.

Certificate Decoder — Decode X.509 PEM certificates — subject, issuer, validity, serial, and fingerprints.

Regex Tester — Test regular expressions with flags, highlight matches, and inspect capture groups.

Case Converter — Convert text between camelCase, PascalCase, snake_case, kebab-case, and more.

String Escape / Unescape — Escape or unescape strings for JSON, JavaScript, SQL, HL7, and XML.

Diff Viewer — Compare two text blocks side by side with a unified line diff.

JSONPath / XPath Tester — Evaluate JSONPath expressions on JSON or XPath expressions on XML documents.

HTTP → cURL — Convert a raw HTTP request into a reproducible cURL command.

Random Test Data Generator — Generate synthetic patient-like JSON test records — fictional data only, no real PHI.

Color Hex ↔ RGB — Convert between hex (#RRGGBB) and rgb(r, g, b) color values.

SQL Formatter — Format and indent SQL queries with uppercase keywords for readability.

Network Speed Test — Measure latency, download, and upload speed to this site (same-origin test).

CSV ↔ JSON — Convert CSV rows to JSON objects and export JSON arrays back to CSV.