Online JSON Schema to OpenAPI Converter
Migrating your data models between different standards can be a tedious manual task. Our JSON Schema to OpenAPI Converter automates this process, allowing you to transform standard JSON Schema definitions into OpenAPI Specification(OAS) compatible formats instantly. Whether you are building Swagger documentation or defining request/response bodies, this tool ensures accuracy and compliance.
Why Convert JSON Schema to OpenAPI?
While OpenAPI(formerly Swagger) uses a subset of JSON Schema, there are critical differences in how certain keywords like type, nullable, and format are handled between different versions(Draft 4, 7, or 2019-09) and the OpenAPI 3.0/3.1 specifications.
Bridging the Compatibility Gap
OpenAPI 3.0 has specific constraints that differ from standard JSON Schema. Our converter handles these nuances, such as converting dependencies to compatible logic or adjusting type arrays to meet OpenAPI's strict requirements, ensuring your API documentation remains valid.
Streamline API Development
Instead of rewriting your database models or validation schemas for your API docs, you can simply paste your existing JSON Schema. This reduces human error and keeps your backend logic and documentation perfectly in sync.
Key Features of Our Converter
Our tool is designed for developers who need precision and speed when managing API specifications.
1. Support for Multiple JSON Schema Drafts
Whether your source schema is based on Draft 4, 7, or 2020-12, our engine identifies the structure and maps it to the closest OpenAPI equivalent.
2. OpenAPI 3.0 & 3.1 Ready
OpenAPI 3.1 is now fully compatible with JSON Schema 2019-09. However, if you are still using OpenAPI 3.0, our tool will automatically "downgrade" specific fields(like nullable: true instead of type: ["string", "null"]) to maintain compatibility.
3. Instant Validation & Formatting
Not only does it convert the data, but it also beautifies the output. You get a clean, indented, and valid OpenAPI schema ready to be pasted into your components/schemas section.
How to Use the Converter
Paste your Code: Copy your source JSON Schema into the input editor.
Select Version(Optional): Choose whether you want the output to be optimized for OpenAPI 3.0 or the newer 3.1 standard.
Kliknite Pretvori: Alat će obraditi logiku i prikazati rezultat kompatibilan s OpenAPI-jem u izlaznom prozoru.
Kopiraj i koristi: Pomoću gumba "Kopiraj" dohvatite novu shemu za svoju Swagger ili Redocly dokumentaciju.
Tehničke razlike na koje treba paziti
Rukovanje svojstvom "Nullable"
U standardnom JSON Schema, polje koje može imati vrijednost null često se definira kao type: ["string", "null"]. U OpenAPIverziji 3.0, ovo se mora pretvoriti u type: stringpomoću zasebnog nullable: truesvojstva. Naš pretvarač to automatski obrađuje.
Ključna riječ "format"
OpenAPIkoristi formatključnu riječ opširnije za validaciju(npr. int32, int64, float, double). Naš alat osigurava da su ti formati sačuvani i ispravno mapirani tijekom transformacije.
Često postavljana pitanja(FAQ)
Je li ovaj pretvarač kompatibilan sa Swaggerom 2.0?
Iako je fokus na verziji OpenAPI3.x, generirane sheme su uglavnom kompatibilne sa Swaggerom 2.0, iako bi neke prilagodbe za taj definitionsodjeljak mogle biti potrebne.
Napuštaju li moji podaci moj preglednik?
Ne. Sva logika konverzije odvija se lokalno u vašem pregledniku pomoću JavaScripta. Vaše osjetljive API sheme nikada se ne šalju našim poslužiteljima.
Mogu li pretvoriti velike, složene sheme?
Da. Naš alat je optimiziran za rukovanje duboko ugniježđenim shemama i definicijama velikih objekata bez kašnjenja u performansama.