Developer Tools
18 free tools available
Format, validate, and transform code like a pro. Free developer tools: JSON formatter, SQL formatter, regex tester, JWT decoder, CSS & JS minifier, cron generator, and diff checker.
All Developer Tools
Free Page Speed Test Online - Check Website Load Time & Performance
Test your website speed and performance instantly. Free online page speed test with Core Web Vitals analysis. No signup needed.
Free JSON Formatter & Validator Online - Beautify JSON Instantly
Format, validate, and beautify JSON data instantly. Free online JSON formatter and validator with error highlighting. No signup required.
Free Hash Generator Online - Generate MD5, SHA-1, SHA-256 Hashes
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text instantly. Free online hash generator tool. No signup required.
JSON to CSV Converter
Free JSON to CSV converter online. Transform JSON data into CSV format for spreadsheets. Flatten nested JSON, custom delimiters, instant download. No signup required.
JSON to YAML Converter
Free JSON to YAML converter online. Transform JSON data into YAML format instantly. Supports nested structures, proper indentation. No signup required.
SQL Formatter
Free SQL formatter online. Beautify and format SQL queries with proper indentation and syntax highlighting. Supports MySQL, PostgreSQL, SQL Server. No signup.
Regex Tester
Free regex tester online. Test and debug regular expressions with real-time matching, highlighting, and group capture. Regex cheat sheet included. No signup required.
Markdown to HTML
Free Markdown to HTML converter online. Convert Markdown text to HTML code instantly. Supports GitHub Flavored Markdown, tables, code blocks. No signup required.
CSS Minifier
Free CSS minifier online. Compress and minify CSS code to reduce file size. Remove comments, whitespace, and optimize selectors. Instant results. No signup.
JS Minifier
Free JavaScript minifier online. Compress and minify JS code to reduce file size. Remove comments, whitespace, and optimize code. Instant results. No signup.
JWT Decoder
Free JWT decoder online. Decode and inspect JSON Web Tokens (JWT). View header, payload, and signature. Verify token expiration. No signup required.
Cron Expression Generator
Free cron expression generator online. Create and validate cron expressions with an easy visual builder. See next run times, human-readable descriptions. No signup.
Diff Checker
Free diff checker online. Compare two texts and highlight differences. Side-by-side diff view, inline diff, and unified diff. Find changes between files. No signup.
Regex Generator
Generate regular expressions from plain English descriptions. Build regex visually with pattern builder, test against sample text, and get explanations. Free.
JSON to TypeScript Converter
Convert JSON data to TypeScript interfaces and types instantly. Generate clean types from JSON with proper nesting, optional fields, and union types. Free.
HTML to JSX Converter
Convert HTML to React JSX instantly. Transform class to className, style strings to objects, event handlers, and self-closing tags. Paste and convert. Free.
JSON to Go Converter
Convert JSON data to Go structs instantly. Generate clean Go struct definitions with proper types, tags, and nested structs. Free, no signup required.
JSON to Python Converter
Convert JSON data to Python dataclasses, Pydantic models, or TypedDicts. Generate clean Python types with proper annotations. Free, no signup required.