Client-side tools for working with JSON, schemas, and APIs. No signup, no server processing — everything runs in your browser.
Format, validate, minify, and beautify JSON — instantly, no signup needed.
Load JSON data from a URL or paste it. Interactive table with sorting, search, pagination, and shareable links.
Paste your OpenAPI spec and get a live mock server with AI-generated data. 10 free records per endpoint.
Generate OpenAPI 3.1 specs from JSON responses. Download as YAML or JSON.
Compare two schemas or API responses. Highlight added, removed, and changed fields.
Test REST API responses. Validate structure, check types, analyze response times.