Developer Tools That Just Work

Pretty-print and beautify JSON with syntax highlighting and indentation control.

Validate JSON syntax instantly with detailed error messages and line numbers.

Compare two JSON files side-by-side with a syntax-aware unified diff view.

Deep structural comparison showing added, removed, and changed fields.

Remove whitespace and compress JSON to reduce payload size.

Transform compact JSON into human-readable indented format.

Generate a JSON Schema from any JSON. Detects types, formats, and nested structures.

Generate TypeScript interfaces or type aliases from JSON with nested type support.

Generate Java POJOs from JSON with getters/setters and Jackson annotation support.

Generate Python dataclasses or Pydantic models from JSON with type hints.

Generate Go structs from JSON with JSON tags, proper types, and nested structs.

Decode JWT tokens and inspect header, payload, and expiry claims.

Encode or decode Base64 strings. Supports standard and URL-safe variants.

Generate UUID v1, v4, and v5. Bulk generation with multiple format options.

Convert Unix timestamps to dates and vice versa with live mode.