JSON Tools

Format, minify, and validate JSON in one place.

Fix broken JSON — trailing commas, single quotes, unquoted keys, and more.

Escape special characters in a string for safe embedding in JSON.

Unescape a JSON-encoded string back to human-readable text.

Convert a JavaScript object literal to valid, spec-compliant JSON.

Sort all object keys alphabetically (A→Z or Z→A), deeply nested.

Compare two JSON objects and highlight added, removed, and changed fields.

Run JSONPath expressions to extract data from JSON.

Flatten nested JSON into a single-level object with dot-notation keys.

Restore a flat dot-notation object back to a nested JSON structure.

Analyze JSON byte size, key count, nesting depth, and type breakdown.

Search for keys or values anywhere in a JSON document.

Convert JSON to YAML format.

Convert YAML to JSON format.

Convert a JSON array of objects to CSV rows.

Parse CSV and convert each row to a JSON object.

Convert JSON to well-formed XML with a configurable root tag.

Parse XML and convert it to JSON.

Convert JSON config objects to TOML format.

Generate SQL INSERT statements from a JSON array.

Generate TypeScript interfaces from JSON.

Generate Python dataclasses from JSON.

Generate Go structs with JSON tags from JSON.

Generate Java POJOs from JSON.

Generate C# classes from JSON.

Generate Rust structs with Serde from JSON.

Generate a Zod validation schema from JSON.

Validate JSON data against a JSON Schema (Draft 7/2019/2020).

Infer a JSON Schema from an example JSON document.

Decode and inspect JWT header, payload, and expiry.

Count GPT tokens in any JSON or text (cl100k_base encoding).