Prime Checker
Test if any number is prime and list primes up to N
Color Shades
Generate a full tint and shade scale from any seed color
Hue Builder
Build and export CSS color palettes with harmony modes
CSS Gradient Backs
Design CSS gradient backgrounds with live preview pane
Color A11y
Accessibility color contrast validator with WCAG pass
Num Base
Convert numbers between decimal hex binary and octal bases
MD Table
Build and copy Markdown tables with a visual grid editor
JS Sandbox
Execute and test JavaScript code with live console output
Git Cheatsheet
Quick reference for common Git commands with descriptions
Entity Coder
Convert text to HTML entities and back with a reference
Crypto Hash
Compute cryptographic hashes using the Web Crypto API
CSS Variables Extractor
Extract all CSS custom properties from the current page
Ratio Calc
Scale width or height while preserving the aspect ratio
IP Info
Show your public IP address location ISP and timezone
Shade Scale
Create Tailwind-style 50-900 color shades from any hex
Diff View
Side-by-side text diff with added removed and changed lines
Hash Generator
Generate MD5 SHA1 SHA256 SHA512 hashes from any text
IP Lookup
Fetch IP geolocation data including city region and org
Text Hasher
Hash any string with multiple algorithms and copy output
Grad Forge
Create smooth CSS gradients with stops and copy the code
Gradient Builder
Build CSS linear radial and conic gradients visually
Window Size Helper
Live viewport dimensions scroll position and device info
