Developer Utilities

Regex, SQL, HTTP, environment files and type generation.

• JSON to TypeScript — Generate TypeScript interfaces or types from JSON, with nested and optional inference.
• URL Parser & Builder — Break URLs into parts and edit query parameters as a table.
• Regex Tester — Test JavaScript regular expressions with live highlights, groups and explanations.
• SQL Formatter — Format or minify SQL for PostgreSQL, MySQL, SQLite, BigQuery and more.
• Code Formatter — Prettier in the browser for JavaScript, TypeScript, CSS, HTML, JSON, Markdown and YAML.
• API Response Inspector — Profile a JSON response: shape, array statistics, value search and path extraction.
• HTTP Header Parser — Parse raw request/response headers and audit common security headers.
• Env File Tool — Parse, validate, sort and compare .env files — secrets masked by default.
• Data Size Converter — Convert between bytes, KB/MB/GB (decimal) and KiB/MiB/GiB (binary).
• Number Base Converter — Arbitrary-precision conversion between binary, octal, decimal, hex and bases 2–36.