UD5 Toolkit
World Flag Quiz - Online Guess the Country by Flag
Random world flags shown; pick the correct country name from four choices. Score and streak. Learn geography.
Country Flag Quiz by Shape - Online Guess the Nation
Country Flag Quiz by Shape
Guess the nation by its silhouette, then pick the right flag!
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Frequently Asked Questions
It's a geography game where you see a country's outline (shape) and must choose its national flag from several options. It tests both map recognition and flag knowledge.
Our online quiz features a rotating set of 10 diverse nations, each with a distinctive shape like Italy, Japan, Australia, Brazil, and more. New rounds shuffle the order for a fresh experience.
Yes, skipping is optional. The "Skip" button reveals the correct answer and moves to the next question without awarding a point.
Practice with silhouette games regularly, study world maps with clear borders, and associate each outline with its location. Our quiz helps build that visual memory.
Absolutely! It's a free online tool with no registration required. Just visit and start guessing flags.
Country Outline Quiz - Online Identify by Shape
A silhouette of a country appears; type the name. Timed guesses. Great for geography buffs.
Country Silhouette Quiz - Online Identify Nation by its Outline
A country border shape appears, guess the nation. Multiple choice. Score tracking. Learn geography visually. Local SVG shapes.
US States & Capitals Quiz - Online Geography Game
Test your knowledge: given a state name, pick its capital. Timed, with scoreboard. Learn all 50. No login.
US States & Capitals Quiz - Online Geography Memory Game
Interactive quiz to learn all 50 US state capitals. Choose mode: capital to state or state to capital. Map highlight available. Works offline.
Random Trivia Question - Online Quiz Yourself
Click for a random general knowledge question, then reveal the answer. Covers science, history, pop culture.
Capital Cities Quiz - Online World Geography Trivia
Test your knowledge of world capitals. Multiple choice, timed rounds. Improve your geography skills. No data collection.
ISO Currency Code Lookup - Online Search by Country
Find the three‑letter currency code (USD, EUR, JPY) for any country. Also lists currency symbol and name. Static.
Campsite Name Generator – Online Silly Nature Nickname
Generate a unique and humorous campsite name for your tent. Great for scout trips or backyard camping.
Connect Four - Online PvP & AI Board Game
Play the classic Connect Four in your browser against a friend or CPU. Drop discs to get four in a row. Clean SVG board, local logic.
Harmonica Key Transposer – Online Find Correct Harp for Song
Enter the song's key and playing position (straight/cross harp) to determine which harmonica key to use.
Blackjack Basic Strategy Advisor - Online Chart & Action Guide
Enter your hand and dealer's up card to see optimal move (hit, stand, double, split) using basic strategy. Educational casino reference.
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.
Compass Bearing Calculator - Online Azimuth Between Lat/Lon
Calculate the bearing (azimuth) and distance between two GPS coordinates using the Haversine formula. Great for orienteering. Local only.
Heading Structure Visualizer - Online Document Outline Check
Paste an URL or HTML and see the h1‑h6 hierarchy as a tree. Detect skipped levels and improve accessibility. Client‑side.
SVG Path D to Array – Online Extract Coordinates
Paste an SVG path d string and parse it into an array of commands and coordinates. Useful for animations.
Base58 Encoder & Decoder - Online Bitcoin-Style Address Tool
Encode or decode data to/from Base58 (Bitcoin alphabet). Useful for cryptocurrency address generation testing. Fully local, no data sent.
Leather Stitching Spacing Guide – Online SPI for Projects
Select project type and leather weight to get recommended stitch spacing and thread size.
Essay Outline Generator – Online Build Thesis & Arguments
Fill in a thesis statement, arguments, evidence, and get a structured essay outline. Print.
Date Duration Calculator - Online Calendar & Workdays
Calculate the exact number of days, weeks, months, and workdays between two dates. Visual calendar highlights. Perfect for projects.
pH Scale Explorer - Online Interactive Acid Base Chart
Drag a slider along the pH scale to see examples of solutions at that pH and the concentration of H⁺ and OH⁻ ions.
Podcast Episode Planner – Online Intro, Segments, Outro
Structure your episode with timed segments. Includes call to action notes. Export as text.
Time Between Dates Calculator - Online Years, Months, Days Count
Calculate exact elapsed time between two dates in years, months, weeks, and days. Countdown or time already passed. Simple, visual, and local.
SQL CREATE TABLE to CSV Header - Online Column Lister
Paste a SQL CREATE TABLE statement and extract just the column names as a CSV header row. For data migration.
Day Counter & Duration Tracker - Online Since/Until
Enter two dates and see the exact number of days, weeks, and workdays between them. Also shows the countdown or days since.
JSON to XML Converter - Online Data Interchange Tool
Seamlessly convert JSON objects into valid XML documents. Control root element naming and attribute formatting. Entirely local, keeping your data safe.
PDF Table Extractor - Online Copy Tables to CSV
Drop a PDF and automatically detect tables. Export them to CSV or copy to clipboard. Works locally using PDF.js.
Ham Radio Q‑Code Quiz – Online Test Your Knowledge
Randomly show a Q-code and select correct meaning. Learn while having fun. For your license exam.
Bird Call Identification Quiz – Online Listen & Match
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
Cloud Type Identifier & Quiz – Online Cirrus, Cumulus, Stratus
Learn to identify the 10 basic cloud types from photos. Self‑test quiz mode. Useful for pilots and hikers.