The DevBench JSON workspace is a full-featured, browser-based JSON editor. Format and validate JSON with real-time error highlighting, explore any object in the interactive tree view, compare two JSON documents with structural diff, and export to YAML, CSV, TypeScript interfaces, XML, or TOML in one click. All processing happens client-side — your JSON never leaves your device.
Features
Format & minify — pretty-print with configurable indent (2 or 4 spaces) or minify to a single line
Validate — syntax errors reported with line and column numbers; common mistakes auto-fixed on request
Tree view — collapse and expand nested objects and arrays; copy any subtree as JSON
JSON Diff — compare two JSON documents and highlight structural differences
Export — convert to YAML, CSV, TypeScript interfaces, XML, TOML, or Base64
JSON Schema validation — paste a schema to validate your document against it
AES-256-GCM encryption — encrypt sensitive JSON payloads with a password, client-side only
NDJSON / JSON Lines — parse and format newline-delimited JSON streams
What is JSON?
JSON (JavaScript Object Notation) is a lightweight, human-readable data interchange format defined in RFC 8259. It supports six value types: strings, numbers, booleans, null, arrays, and objects. JSON has become the de-facto standard for REST API responses, config files, database documents (MongoDB, Firestore), and data exchange between services.