All JSON Developer Tools & Utilities
Format, validate, query, convert, and diff JSON, JSON5, YAML, XML, and CSV data directly in your browser. Fast, 100% private, and built for modern software engineers.
JSON Formatter & Validator
Beautify, validate, minify, and inspect JSON in multi-pane split view with real-time error pinpointing and collapsible tree inspection.
JWT Decoder Online
Decode JWT header, payload and signature, convert iat/exp/nbf timestamps and check token expiration entirely in your browser.
JSON Sorter Online
Sort JSON keys alphabetically (A-Z, Z-A), natural alphanumeric, deep recursive, and order arrays deterministically.
JSON5 Formatter & Studio
Full ECMAScript 5.1 JSON5 support. Format and validate JSON5 configuration files with inline comments, unquoted keys, single quotes, and hex numbers.
JSON ↔ JSON5 Converter
Real-time bidirectional synchronization between strict RFC 8259 JSON and human-friendly JSON5 with intelligent quote handling and linting.
JSON to TypeScript Converter
Generate TypeScript interfaces or type aliases from JSON and JSON5 with nested type extraction, unions and optional field detection.
JSON to Zod Schema Converter
Generate Zod validation schemas from JSON and JSON5 with nullable, optional and union detection plus an inferred TypeScript type.
JSON to BigQuery Schema Generator
Generate Google BigQuery Schema JSON and CREATE TABLE DDL from JSON with RECORD structs, REPEATED arrays, and timestamps.
JSON to GraphQL Schema Generator
Convert JSON into GraphQL Schema Definition Language (SDL) types, input types, queries, and mutations instantly.
JSON to MySQL Table & INSERT Generator
Convert JSON datasets into MySQL CREATE TABLE statements and parameterized INSERT INTO queries with type inference.
JSON to PostgreSQL Table & DDL Generator
Convert JSON into PostgreSQL CREATE TABLE DDL with SERIAL keys, JSONB columns, native array types, and INSERT queries.
JSON Flattener & Unflattener
Flatten deeply nested JSON into dot notation or unflatten flat key-value pairs back into nested JSON trees with custom delimiters.
JSON Tree Visualizer & Mindmap
Visualize complex JSON hierarchies as an interactive, collapsible SVG mindmap and visual node tree with zoom, pan, and search.
JSON Minifier Online
Compress and minify JSON and JSON5 by stripping extra whitespace, newlines, and comments to reduce payload byte sizes.
JSON Token Counter
Calculate exact token counts for OpenAI GPT-4o, Claude 3.5, and Gemini 1.5 with minification savings and cost estimates.
Broken JSON Repair & Fixer
Automatically fix and heal malformed, truncated, or invalid JSON generated by ChatGPT, Claude, and LLMs in real time.
JSON ↔ YAML Converter Online
Bidirectional converter between JSON / JSON5 and YAML. Supports JSON5 comments, unquoted keys, and customizable 2-space or 4-space YAML indentation.
JSON ↔ XML Converter Online
Bidirectional XML & JSON/JSON5 conversion. Preserves XML attributes (@_ prefix), customizable root wrapper tags, and XML declarations.
YAML to CSV Converter Online
Transform YAML records and lists into tabular CSV spreadsheets with intelligent dot-notation object flattening and interactive table grid preview.
CSV to JSON / JSON5 Converter Online
Convert CSV and TSV spreadsheets into structured JSON arrays of objects, 2D matrix arrays, or human-friendly JSON5 with automatic type inference.
JSON to CSV Converter
Transform nested JSON objects and arrays into clean, RFC 4180 compliant CSV spreadsheets with custom delimiters, quotes, and flatten options.
JSON Stringify & Unescape Online
Escape double quotes, forward slashes, and backslashes to stringify JSON into safe literals, or unescape strings back to beautified JSON.
Text to JSON Generator
Convert natural text syntax and shorthand schema templates into strict structured JSON. Generate realistic mock datasets using smart tokens.
Mock JSON Generator
Generate realistic fake JSON data for APIs, testing, and development. Choose from User, Product, Order, and Company templates with custom fields, seeds, and nested schemas.
JSON Diff & Comparator
Compare two JSON objects side-by-side with color-coded diff highlighting. Detect added, removed, modified, and reordered properties instantly.
JSON Schema Generator
Automatically infer and generate valid JSON Schema definitions from raw JSON samples. Supports Draft-07, 2020-12, and Draft-04 standards.
JSONPath Tester & Query Tool
Execute and evaluate JSONPath expressions live against complex JSON trees with highlighted matches, query history, and cheatsheet.
Built for Speed, Privacy, and Precision
No server hops, zero data retention, and fully reactive browser-first architectures.
Client-Side Security
Every payload, token, and schema is parsed and evaluated locally in your browser memory. Nothing ever touches a remote database or logging pipeline.
Modern Formats Supported
First-class support for standard JSON, JSON5 (with comments and unquoted keys), YAML, XML, and CSV tabular records with bidirectional conversion.
Instant & Zero Telemetry
No paywalls, no login requirements, and no tracking cookies. Simply bookmark your favorite tool and format or convert payloads anytime.