Build, debug, and transform JSON with a modern toolset
JsonFlex simplifies everyday developer workflows with fast, reliable utilities for JSON formatting, diffing, and type generation — all in one place.
Our mission
Make working with JSON fast, intuitive, and delightful. Whether you are formatting complex structures, diffing payloads, or generating TypeScript, JsonFlex streamlines your flow.
Popular tools
JSON Prettier
Format and validate JSON instantly.
JSON Diff
Compare JSON structures side by side.
JSON → TypeScript
Generate accurate interfaces from JSON.
C# → TypeScript
Convert C# models into TS types fast.
JWT Decoder
Decode and inspect JWT payloads.
URL Encoder / Decoder
Encode or decode URLs and query strings.
Developer-first
Simple UX, keyboard-friendly flows, and sensible defaults.
Privacy-conscious
Designed to handle your data responsibly and transparently.
Fast & reliable
Lightweight, responsive tools that get out of your way.
Our story
Welcome to JsonFlex.com – your flexible and powerful suite of JSON tools. Our mission is to simplify and enhance the way developers work with JSON data by providing intuitive, efficient, and reliable tools in one place.
JsonFlex was built by a team of passionate developers who understand the daily challenges of data formatting, conversion, and validation. We believe that working with JSON should be easy, fast, and accessible to everyone.
Whether you are formatting complex JSON structures or converting JSON to TypeScript interfaces, JsonFlex is here to streamline your workflow and boost your productivity.
Thank you for using JsonFlex. We continuously strive to improve our tools and add new features to support the developer community. If you have any feedback or suggestions, feel free to contact us atsupport@jsonflex.com.
Have feedback or ideas? We would love to hear from you — reach us atsupport@jsonflex.com.