Browser-side toolkit
Tools for the JSON between systems.
Every tool runs locally. Use real payloads without creating an account or sending the document to JSON Anvil.
Clean and inspect
JSON Formatter
Format, validate and minify JSON locally with readable errors and useful document statistics.Open tool →02Fix malformed payloads
Repair JSON
Repair common JSON syntax mistakes and review a clean, parseable result without sending data to a server.Open tool →03Compare structures
JSON Diff
Compare two JSON documents by path and identify added, removed and changed values.Open tool →04Query nested data
JSONPath Tester
Run JSONPath expressions against a local JSON document and inspect matched paths and values.Open tool →05Describe payload shape
Schema Generator
Infer a readable JSON Schema Draft 2020-12 starting point from example data.Open tool →06Turn data into types
JSON to TypeScript
Generate readable TypeScript interfaces from an example JSON payload in your browser.Open tool →07Share safer examples
Secret Redactor
Mask likely secrets, credentials, email addresses and IP addresses before sharing JSON.Open tool →Need context?
Read the field guides.
Learn why JSON errors happen, how standards differ, and what to check before a payload reaches production.
Browse guides