Build, test and share your JSON, transformations and schemas.

JSONMate is a tool to edit your JSON documents, apply and test JSON transformations, test your schemas and share the result with others.

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JSON editor
Edit Your JSON

Create new JSON documents in an easy-to-use editor or load existing JSON from disk or URL.

JSON transformations.
Test Transformations

A single tool where you can test and debug your JSON transformations. The most popular JSON transformation languages are supported: JSON Pointer, JSON Path, JSONata, JQ, JMESPath, JavaScript (with Lodash).

Store and share JSON documents.
Store & Share

Never loose your JSON sample documents, transformations and schemas. Share with others or add permalinks to your blog posts or documentation.

JSONMate packed with nice features

JSONMate comes packed with nice features such as JSON editing (text or tree view), open/save from/to disk or URL, JSON visualization, the most popular JSON transformation languages built-in, permalinks, you name it!
JSON Editing

Edit JSON either in text or tree mode. Load your JSON from disk or URL. Save either to disk or send to an API endpoint. JSONMate even has a special "visual" mode to display JSON in an orgchart-like picture.

JSON Transformation

All the most popular JSON transformation languages are built-in: JSON Pointer, JSON Path, JSONata, JQ, JMESPath or JavaScript with Lodash.

Store & Share

Save your JSONs together with transformations permanently. Share permalinks with others.

JSON Schemas

Automatically generate JSON schemas from your JSON or sample your JSON schemas to create mock documents.

Diff, Repair, Validate

Display a diff of two JSON documents, repair your broken JSONs or validate your JSONs against a JSON schema. We've got your covered!

Free

JSONMate is free to use. Enjoy!

Built by developers for developers.

JSON is ubiquitous

Yet, an omni-tool that supports all the popular JSON transformation languages built-in, JSON schema generation and sampling, good editing capabilities and storage with sharing, all in a single app, is missing. Until now!

Never loose your sample JSON documents

We all work with JSON and let's face it, our sample documents, API requests and responses, are all scattered throughout the many projects we work with JSON in. Moreover, the transformation expressions that we often times put together with a lot of effort, get lost. Not anymore! Create, transform and share your JSONs and schemas with your colleagues and store them permanently in one place for future reference.

About Us

We're client IO and we're dedicated to developing Low-Code/No-Code tools and empowering innovative thinkers to create amazing products faster.

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