Developer Essentials

The daily toolkit for developers: JSON tools, UUID generators, regex testers, encoders, and time utilities.

• JSON Formatter — Format, validate, and minify JSON. Instant syntax checking. Free online JSON formatter and validator, works in your browser with no signup required.
• JSON to CSV Converter — Convert JSON arrays to CSV spreadsheet format and vice versa. Free online JSON to CSV converter, works instantly in your browser with no account needed.
• JSON to TypeScript — Smart tool that instantly converts JSON objects into clean TypeScript interfaces and types, saving developers time and eliminating manual type definition work.
• YAML JSON Converter — Fast and reliable tool for converting YAML to JSON and JSON to YAML instantly, perfect for developers working with config files, APIs, and cloud infrastructure.
• UUID Generator — Generate random UUIDs (v4) and ULIDs instantly. Free online UUID and ULID generator, works in your browser with no account or installation needed.
• Hash Generator — Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text. Free online hash generator, runs entirely in your browser, your data never leaves your device.
• Regex Tester — Test and debug regular expressions with live match highlighting. Free online regex tester with real-time feedback, no signup or installation required.
• Timestamp Converter — Convert Unix timestamps to human-readable dates and back. Free online Unix timestamp converter, works instantly in your browser with no account needed.
• Markdown to HTML — Convert Markdown to HTML with live preview. Free online Markdown to HTML converter, works entirely in your browser with no signup required.
• SQL Formatter — Format and beautify SQL queries for better readability. Free online SQL formatter, works in your browser with no signup or installation required.
• XML Prettify & Formatter — Free online XML prettify and format tool. Clean raw or minified XML code with proper indentation, making it easy to read, debug, and validate XML documents.
• Cron Generator — A simple tool for building and validating cron expressions visually, perfect for developers who need to schedule tasks without memorizing cron syntax.
• Base64 Encoder / Decoder — Encode and decode Base64 strings instantly. Free online Base64 encoder and decoder, works entirely in your browser with no signup or installation required.
• URL Encoder / Decoder — Encode and decode URLs and query string parameters. Free online URL encoder and decoder, works in your browser with no account or installation needed.
• JWT Decoder & Encoder — Developer tool for decoding and encoding JSON Web Tokens instantly, making it easy to inspect JWT payloads, headers, and signatures without any backend setup.