About JSON Toolkit

JSON Toolkit brings together the JSON tools developers reach for every day — formatting, validation, viewing, diffing, conversion and JSONPath querying — into one fast, modern web app.

Built for privacy

The core tools run entirely in your browser. Your data is never uploaded unless you explicitly save a document to generate a shareable link.

Open and free

Every tool is free to use. Ads keep the lights on so we can keep the toolkit free for everyone.

Get started

Jump into the JSON Formatter or browse all tools. Have feedback? Visit our contact page.