💻 Developer Tools
Free online tools for developers. Formatters, converters, generators, and debugging utilities.
37 free tools · No signup required
JSON Formatter & Validator
Format, minify, and validate JSON instantly. Free, no signup.
Try it free →JSON to CSV XML YAML
Convert JSON data to CSV, XML, or YAML format instantly. Free, no signup.
Try it free →JSON Minify Beautifier
Minify or pretty-print JSON instantly. Free, no signup.
Try it free →Hello World
Format and beautify HTML code instantly. Fix indentation and structure.
Try it free →JavaScript Formatter
Format and beautify JavaScript code instantly.
Try it free →XML Formatter Beautifier
Format and beautify XML data instantly. Free, no signup.
Try it free →YAML JSON Converter
Convert between YAML and JSON formats instantly. Free, no signup.
Try it free →SQL Formatter
Beautify and format SQL queries instantly. Free, no signup.
Try it free →CSS Minifier Beautifier
Minify CSS code instantly. Reduce file size for faster loading. Free, no signup.
Try it free →CSSJSHTML Minifier
Compress your CSS, JavaScript, or HTML code. Removes comments, whitespace, and unnecessary characters. Free, no signup.
Try it free →CSV Parser Viewer
Parse CSV data into a table or JSON. Free, no signup.
Try it free →CSV to JSON Converter
Convert between CSV and JSON formats. Custom delimiters, smart parsing, and instant preview. Free, no signup.
Try it free →Base64 Encoder Decoder
Encode or decode Base64 strings instantly. Free, no signup.
Try it free →Number Base Converter
Convert numbers between binary, octal, decimal, hex, and base-36. Free, no signup.
Try it free →Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes instantly. Free, no signup.
Try it free →HMAC Generator
Generate HMAC signatures using SHA-1, SHA-256, SHA-384, or SHA-512. Free, no signup.
Try it free →JWT Parser Decoder
Decode and inspect JWT tokens instantly. Free, no signup.
Try it free →UUID Generator
Generate unique identifiers instantly. UUID v4 (random) or v7 (time-sortable).
Try it free →Regex Tester
Test regular expressions in real-time. Free, no signup.
Try it free →Cron Expression Generator
Build cron expressions with a visual editor. Free, no signup.
Try it free →Git Command Cheat Sheet
Quick reference for common Git commands. Free, no signup.
Try it free →Chmod Calculator
Calculate Linux file permissions visually. Free, no signup.
Try it free →HTML Entity Encoder Decoder
Encode or decode HTML entities instantly. Free, no signup.
Try it free →AI Code Generator
Describe what you need → get clean, commented code. 10+ languages. Free, no signup.
Try it free →AI Math Solver
Enter any math problem → get step-by-step solutions. Algebra, calculus, geometry, statistics, and more. Free, no signup.
Try it free →Lorem Ipsum Generator
Generate placeholder text for your designs and mockups. Free, instant.
Try it free →Random Image Generator
Get beautiful random placeholder images from Lorem Picsum. Free, no signup.
Try it free →Random Data Generator
Generate random test data — strings, numbers, UUIDs, emails, and more. Free, no signup.
Try it free →Random Port Generator
Generate random port numbers for development. Free, no signup.
Try it free →Barcode Generator
Generate barcodes from text or numbers. Supports Code 128 and Code 39. Download as PNG.
Try it free →QR Code Generator
Generate QR codes from any URL or text. Free, instant, no signup.
Try it free →QR Code Scanner
Scan QR codes using your camera or by uploading an image. Instantly decode URLs, text, WiFi, and vCards. Free, no signup.
Try it free →1
Write Markdown with live preview. Full syntax support, toolbar, and HTML export. Free, no signup.
Try it free →1
Convert Markdown to clean HTML instantly. Free, no signup.
Try it free →Diff Checker
Compare two texts and highlight differences. Line-by-line and word-by-word comparison. Free, no signup.
Try it free →Text Diff Checker
Compare two texts and see the differences instantly. Free, no signup.
Try it free →1
Free online notepad with Markdown support. Auto-saves to your browser. Export as .txt or .md.
Try it free →