Every JSON tool you need. Right in your browser.

Format, validate, diff, convert, and query JSON — all running locally in your browser.

24 toolsNo data uploadNo loginFree forever
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JSON Tools
JSON Formatter

Beautify and format JSON with configurable indentation and real-time syntax highlighting.

JSON Validator

Validate JSON against the spec and get clear, actionable error messages.

JSON Diff

Compare two JSON documents side-by-side and highlight every difference.

JSON Escape / Unescape

Escape special characters in a string for safe use inside JSON, or unescape them back.

JSON Repair

Fix broken or malformed JSON — trailing commas, single quotes, unquoted keys, Python literals, and more.

JSON Sort Keys

Sort JSON object keys alphabetically — ascending or descending — recursively through all nested levels.

Converters
JSON → YAML

Convert JSON to YAML format instantly, preserving all structure and types.

JSON → CSV

Flatten JSON arrays into CSV rows, ready to open in Excel or Google Sheets.

JSON → XML

Convert JSON to XML markup, preserving structure and nesting.

JSON → PDF

Convert JSON data into a formatted, printable PDF document.

JSON → TOML

Convert JSON configuration files to the TOML format used by Rust and others.

TOML → JSON

Convert TOML configuration files to JSON. Handles tables, arrays of tables, inline tables, and all TOML types.

JSON → Excel

Convert JSON arrays to a formatted Excel (.xlsx) spreadsheet, ready to open in Excel or Google Sheets.

JSON → SQL

Convert a JSON array to SQL INSERT statements. Choose your table name, dialect (MySQL, PostgreSQL, SQLite), and an optional CREATE TABLE.

CSV → JSON

Convert CSV data to a JSON array of objects. Headers become keys, values are typed automatically.

XML → JSON

Convert XML documents to JSON. Handles nested elements, attributes, and repeated tags.

YAML → JSON

Convert YAML to JSON instantly. Supports anchors, aliases, and all YAML scalar types.

Advanced
JSON Schema

Generate and validate JSON Schema from sample data or validate documents against a schema.

JSONPath

Query JSON documents using JSONPath expressions and inspect the results live.

JWT Decoder

Decode and inspect JWT tokens — header, payload, and signature — without any server.

JSON → TypeScript

Generate TypeScript interfaces from JSON. Handles nested objects, arrays of objects, nullable fields, and optional properties.

JSON → Java

Generate Java POJO classes from JSON with optional Jackson or Gson annotations, and optional Lombok.

JSON → Python

Generate Python dataclasses, TypedDicts, or Pydantic models from any JSON structure.

JSON → Go

Generate Go structs from JSON with proper type mapping and json tags.