Country Outline Quiz - Online Identify by Shape
A silhouette of a country appears; type the name. Timed guesses. Great for geography buffs.
UD5 Toolkit
A silhouette of a country appears; type the name. Timed guesses. Great for geography buffs.
See a flag and pick the country among four choices. Timed rounds with score. Perfect for geography buffs. Local data.
Random world flags shown; pick the correct country name from four choices. Score and streak. Learn geography.
Interactive quiz to learn all 50 US state capitals. Choose mode: capital to state or state to capital. Map highlight available. Works offline.
Test your knowledge: given a state name, pick its capital. Timed, with scoreboard. Learn all 50. No login.
Find the threeβletter currency code (USD, EUR, JPY) for any country. Also lists currency symbol and name. Static.
Test your knowledge of world capitals. Multiple choice, timed rounds. Improve your geography skills. No data collection.
Paste an URL or HTML and see the h1βh6 hierarchy as a tree. Detect skipped levels and improve accessibility. Clientβside.
Fill in a thesis statement, arguments, evidence, and get a structured essay outline. Print.
Generate a unique and humorous campsite name for your tent. Great for scout trips or backyard camping.
Click for a random general knowledge question, then reveal the answer. Covers science, history, pop culture.
Paste a hex code and get the closest official CSS color name and a list of similar Pantone-like shades. Design reference.
Select project type and leather weight to get recommended stitch spacing and thread size.
Paste an SVG path d string and parse it into an array of commands and coordinates. Useful for animations.
Enter your hand and dealer's up card to see optimal move (hit, stand, double, split) using basic strategy. Educational casino reference.
Calculate the bearing (azimuth) and distance between two GPS coordinates using the Haversine formula. Great for orienteering. Local only.
Structure your episode with timed segments. Includes call to action notes. Export as text.
Enter the song's key and playing position (straight/cross harp) to determine which harmonica key to use.
Drag a slider along the pH scale to see examples of solutions at that pH and the concentration of HβΊ and OHβ» ions.
Enter two dates and see the exact number of days, weeks, and workdays between them. Also shows the countdown or days since.
Calculate the exact number of days, weeks, months, and workdays between two dates. Visual calendar highlights. Perfect for projects.
Encode or decode data to/from Base58 (Bitcoin alphabet). Useful for cryptocurrency address generation testing. Fully local, no data sent.
Calculate exact elapsed time between two dates in years, months, weeks, and days. Countdown or time already passed. Simple, visual, and local.
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.
Paste a SQL CREATE TABLE statement and extract just the column names as a CSV header row. For data migration.
Drop a PDF and automatically detect tables. Export them to CSV or copy to clipboard. Works locally using PDF.js.
Seamlessly convert JSON objects into valid XML documents. Control root element naming and attribute formatting. Entirely local, keeping your data safe.
Answer 5 silly questions and get a fruit personality result with a description. Harmless fun, local only.
Show a word and guess the correct translation, but watch out for false friends. Avoid embarrassment.
Randomly show a Q-code and select correct meaning. Learn while having fun. For your license exam.