JSON FormatterPrivacy: All processing runs locally
Format, tree view, diff, query (JSONPath & JMESPath), flatten, sort, generate schemas. Handles 50MB+ files.
$.users[0].name · $.users[*].email · $.users[?(@.age>30)] · $..nameJMESPath:
users[0].name · users[*].email · users[?age>`30`].name · length(users)
How It Works
The JSON Formatter is a comprehensive client-side tool for working with JSON data. All processing happens in your browser using native APIs.
Format — validates, formats, and minifies JSON with syntax highlighting. Supports large files (50MB+) via chunked processing.
Tree View — interactive collapsible tree with virtualized rendering for smooth scrolling of large documents. Search keys and values, right-click to copy paths.
Query — supports JSONPath ($.store.book[*].author) and JMESPath (users[?age>`30`].name) for extracting data from JSON.
Diff — compares two JSON documents recursively, showing additions (green), removals (red), and changes (yellow) with the path to each difference.
Transform — Sort keys recursively, flatten nested objects to dot-notation, or unflatten back to nested structure.
Schema — auto-generates a JSON Schema from your data by analyzing types, required fields, array item types, and nested structures.