UD5 Toolkit
HTML Character Entity Lookup ā Search by Name or Symbol
Search over 1,400 HTML character entities by name, number, or just by typing a symbol. Click to copy the entity code for your markup.
Tag: Reference Tables - Quick Lookup
48+ toolsCSS Cursor Demo - Online Preview All Pointer Styles
Hover over tiles to see every CSS cursor value in action. Quick visual reference for choosing the right UI feedback.
Statute of Limitations Lookup ā Online Reference by US State
Select a US state and legal category (debt, personal injury) to see typical time limits. Quick informational guide.
World Plug & Socket Type Guide ā Travel Adapter Reference
Look up plug types and sockets used in every country. See images of Type A through Type N, and find out which travel adapter you need for your next trip.
Poison Control Reference ā Online US Hotline & Ingredient Lookup
Displays the national poison control number and basic first steps for common household ingestions. Seek medical help immediately.
TLD & Domain Extension Lookup - Online All Endings
Search a complete list of all topālevel domains. See which still have availability. For brand naming. Static reference.
HTTP Headers Reference - Online Search & Descriptions
Browse a searchable list of standard HTTP request and response headers with explanations. Quick dev help.
Color to Emotion Reference - Online Psychology Quick Guide
Click any color to see common emotional associations and cultural meanings. Quick design reference.
JavaScript Regex Cheatsheet - Online Interactive Pattern Reference
Interactive cheatsheet for JavaScript regular expressions with live examples. Click any token to see its explanation and test it on sample text immediately.
Hex Color to Name Finder - Online Identify Closest Hue
Paste a hex code and get the closest official CSS color name and a list of similar Pantone-like shades. Design reference.
Named CSS Colors Explorer - Online Preview All 148
Grid of all 148 named CSS colors. Hover to see detail, click to copy the name or hex. Essential frontend reference.
Public Holidays Calendar - Online All Countries
Select a country and year to see every public holiday. Static data for major countries. Plan your vacations.
All Emojis Showcase - Online Browse & Copy Full Set
View every standard emoji in a searchable grid. Hover to see a larger preview. Click to copy. Updated with Unicode 16.
Teething Symptoms Reference ā Online Timeline & Relief Ideas
Understand teething order, typical symptoms, and safe relief methods. Charts and tips for new parents. Educational, not medical advice.
HTTP Status Code Reference - Online Search & Meanings
Look up any HTTP status code and see its meaning, RFC reference, and example. Full offline reference.
File Extension Database Lookup - Online Search Type
Search for any file extension to see its full name, MIME type, and description. Covers thousands of entries. Static data.
BMI Chart & Ideal Weight Table - Online Reference
Look at a colorācoded BMI table for your height and see the healthy weight range. Simple reference.
CSS Cursor Playground - Online Preview All Pointer Styles
Hover over tiles to see every CSS cursor value in action. Quick visual reference for choosing the right UI feedback.
Famous Brand Colors - Online Quick Reference Palette
Search a library of famous company brand colors with hex codes. Copy any color instantly. For designers and marketers.
Food Alternative Finder - Online Substitute Ingredient Lookup
Type a common ingredient and get possible substitutes with ratios. Perfect for emergency cooking. Static reference.
Morse Code Cheatsheet - Online Printable Reference
A clean, printable Morse code chart with letters, numbers, and common punctuation. Learn and decode easily. Static.
CanIUse Quick Search - Online Browser Support Lookup
Offlineāfirst search of the CanIUse database. Type a CSS property, HTML element, or API and see global support percentages. Fast.
Interactive Regex Cheatsheet - Online Quick Reference
An interactive reference for regular expression tokens. Click a token to see its explanation and example. Learn regex faster.
MIME Type ā Extension Lookup - Online Quick Reference
Search by MIME or file extension to see the corresponding type. Helpful when configuring web servers. Static.
Math Symbols Reference - Online Copy & Paste LaTeX
Browse and copy common mathematical symbols, Greek letters, and operators. Includes LaTeX codes for use in documents. Quick reference for students.
World Capitals List & Search - Online Reference
Search by country or city to find the capital. Full offline list. Useful for homework or travel planning. Static data.
Proofreading Marks Reference - Online Editors' Cheat Sheet
A visual guide to common copyāediting and proofreading symbols. Click a mark to see its meaning. For writers.
TCP/UDP Port List - Online Common Service Reference
Searchable table of wellāknown TCP and UDP ports with their services. Check 80, 443, 3306, and many more.
HTTP Status Codes Reference - Online Quick Cheat Sheet
A complete reference of HTTP status codes with explanations. Search and filter by code or category. Useful for API developers and web debugging. Static and fast.
Ham Radio Q-Codes Cheatsheet ā Online Quick Reference
Searchable list of Q-codes with meanings. Also includes RST system. Prepare for license.
Etymology Quick Lookup - Online Word Origin Reference
Enter an English word to get a brief etymology (Latin, Greek, etc.) and root meaning. From curated static data.
Named HTML Entities Reference - Online Quick Chart
Searchable grid of all named HTML character entities with previews. Click to copy &, <, © etc. For web devs.
Docker Commands Cheatsheet - Online Quick Reference
A searchable list of essential Docker CLI commands for managing containers, images, and volumes. Copy-paste friendly. Always handy.
Git Cheatsheet - Online Common Commands Reference
Quick reference for frequently used Git commands with examples. Searchable and categorized. A handy resource for all developers.
Units of Measurement Reference - Online Quick Guide
Search and browse a comprehensive table of SI units and common imperial conversions. For students and engineers.
Country Facts - Online Quick Nation Info & Flag Tool
Look up quick facts about any country: capital, population, currency, flag, and continent. Static data, fast search. Great for travel and education.
User Agent Style Sheet Explorer - Online See Default CSS
Browse the builtāin styles that browsers apply to HTML elements. Understand why your page looks different. Static reference.
Browser Font Stacks Explorer - Online Defaults Per OS
See which fonts map to generic families (serif, sansāserif, monospace) on different operating systems. A handy reference.
HTML Color Names - Online Complete List with Hex & Preview
A complete, searchable list of all 140+ named HTML/CSS colors with their hex codes and color previews. Click to copy code. Essential web reference.
Polygon Name Finder - Online How Many Sides?
Enter a number of sides (3ā100) and get the correct polygon name (triangle, hectogon). Fun geometry reference.
Decibel Level Reference ā Online Common Sound Examples
Interactive scale showing dB levels of everyday sounds with playable samples. Hearing safety.
Currency Symbol Lookup - Online Find $ ā¬ Ā„
Search by country or currency name to find its symbol and code. Quick static reference for international business.
UV Index Reference - Online Exposure Category & Protection
See the current UV index forecast or enter a value to learn protection needed (SPF, hat, shade). Educational.
What Font is Used on a Website - Online Detector
Enter a URL and extract the font stacks and web font URLs used on that page. Quick typography research.
ASCII Table - Online Character Code Reference
Interactive ASCII table showing decimal, hex, octal, and binary codes for all standard and extended ASCII characters. A classic programmer reference.
Planetary Fact Sheet - Online Solar System Stats
Click a planet to see mass, diameter, moons, temperature, and distance from sun. Beautifully styled static data.
Pi Digits Viewer - Online Scrolling Infinite Ļ
Scroll through thousands of preācomputed digits of Ļ. Search for a specific string of digits. For math lovers.
USB Pinout Reference - Online Connector Wiring Guide
Reference diagrams for USBāA, USBāC, microāUSB pinouts. See wire colors and signal descriptions. Hardware hacking helper.