Tool directory
Select a json tool
Each page explains its purpose, provides focused controls, and identifies important limitations before you use the result.
JSON Formatter
Format, beautify, and validate JSON online with readable indentation and copy-ready output.
JSON Compare
Compare two JSON documents and highlight added, removed, and changed lines.
JSON Repair
Repair common JSON mistakes such as trailing commas, comments, single quotes, and unquoted keys.
JSON Schema Generator
Generate a draft-style JSON Schema from sample JSON with nested properties and array item inference.
JSON to TypeScript
Convert JSON samples into TypeScript interfaces with nested object and array types.
Practical guidance
Common json workflows
Start with the task you need to complete, then move to another tool only when the workflow calls for it.
- 01
Inspect an API response
Format a payload for readability, compare it with another version, and identify structural or value changes.
- 02
Repair a JSON-like snippet
Apply conservative fixes to common syntax mistakes, then validate and review the normalized result.
- 03
Draft data documentation
Generate a schema or TypeScript interfaces from representative samples, then refine constraints and optional fields.
Important to know
JSON processing runs in your browser. Generated schemas and TypeScript types should be reviewed against the complete data contract before production use.
JSON Tools questions
This collection includes JSON Formatter, JSON Compare, JSON Repair, JSON Schema Generator, JSON to TypeScript.