Code formatters, encoders, and developer utilities. 74 free online tools, no signup required. Most run in your browser; some tools contact third-party services.
Developer Tools is a grab-bag of precisely tuned helpers for everyday coding, inspecting, and data wrangling. Anyone touching APIs spends time with JSON Formatter and JSON to CSV when a response needs to become a readable table, or reaches for cURL to Code Converter to turn a working curl call into JavaScript Fetch, Axios, Python Requests, or Go in one keystroke. Backend and frontend teams generate strict type definitions with JSON to TypeScript Interfaces, tidy gnarly database queries with SQL Query Formatter, and decode what a cryptic expression means with Regex Explainer & Visualizer. Debugging sessions are faster with API Tester when you want to fire requests and read responses without leaving the page. The tools run entirely in your browser, so tokens, URLs, payloads, and snippets you paste are inspected locally and never uploaded — a meaningful plus when you are debugging against production secrets or sensitive endpoints. From minifying a script and checking HTTP status codes to building cron schedules and generating app icon packs, there is a shortcut for the recurring 20-second tasks that otherwise eat whole mornings. All of it is free, with no signup and nothing to install. Open the developer tools the next time a payload needs formatting, a query needs explaining, or a curl command needs portable code.