Developer Tools Collection
Developer utilities to speed up common tasks like converting Markdown, formatting, and more.
Chmod Calculator
Calculate Linux file permission codes (chmod) visually or by number
Color Contrast Checker
Check color contrast ratios for accessibility compliance (WCAG AA & AAA)
Crontab Generator
Build and test cron job schedules with a visual interface
Diff Checker
Compare text, code, or files side-by-side to find differences
DNS Lookup
Check DNS records (A, AAAA, MX, NS, TXT, SOA) for any domain
.env Generator
Generate secure .env files for your projects with best practices
Favicon Generator
Create favicons for all platforms (Web, iOS, Android) from text or image
HTML Entity Encoder
Encode and decode HTML entities to prevent XSS and ensure proper rendering
HTTP Status Codes
Complete list of HTTP status codes with explanations and troubleshooting
IP Address Lookup
Find geolocation and network details for any IP address
JWT Decoder
Decode and debug JSON Web Tokens (JWT) without sending them to a server
Open Port Checker
Check if specific ports are open and reachable on your server or IP
SQL Formatter
Format and beautify SQL queries for better readability
SVG Optimizer
Compress and optimize SVG files by removing unnecessary code
TOML Validator
Validate and format TOML configuration files
URL Encoder/Decoder
Encode and decode URLs to handle special characters correctly
UUID Generator
Generate Version 1, 4, and 5 UUIDs instantly
YAML Formatter
Validate, format, and converting YAML to JSON
Markdown to HTML
Convert Markdown text to clean HTML with options for sanitization and preview
Regex Tester
Build, test, and debug regular expressions with live highlighting, replacement previews, and match analysis
HTML Minifier & Beautifier
Compress and optimize HTML code by removing whitespace, comments, and redundant attributes. Includes beautify mode.
CSS Minifier & Beautifier
Compress and optimize your CSS code by removing whitespace, comments, and redundant attributes. Includes beautify mode.
Javascript Minifier & Beautifier
Compress and optimize your JavaScript code by removing whitespace, comments, and redundant attributes. Includes beautify mode.
JSON Formatter, Validator & Minifier
Compress and optimize your JSON code by removing whitespace, comments, and redundant attributes. Includes beautify mode.
XML Validator & Formatter
Validate, format, and minify XML with syntax highlighting, error detection, XPath testing, and conversion to JSON
Border Radius Generator
Generate beautiful border-radius CSS with visual preview, multiple units, presets, and export options for web design
API Testing Tool
Test REST APIs, debug requests, and generate code snippets with this comprehensive API testing tool
Typography System Designer
Design complete typography systems with instant previews, palettes, and accessibility checks.
Why Use Our Developer Tools?
Built for Developers
Handy utilities for everyday coding tasks and content workflows
Fast and Local
All processing happens in your browser for speed and privacy
Clean Outputs
Get standards-compliant, copy‑paste friendly results
Mobile Friendly
Use these tools comfortably on any device