🌤️
Public data
Global Weather & Outfit Guide
Check current conditions, a 5-day forecast and air quality for any city, with practical umbrella and outfit tips.
Building something fun, one tool at a time
A hundred tiny services
ready when you need them
From calculators and personality tests to public data and mini games. Everything is gathered here to add a little fun and help to your day.
START HERE
Services you may like
🚀
Public data
NASA Space Data Explorer
Explore the astronomy picture of the day, near-Earth objects for the next week, and recent solar activity.
🍁
Public data
MapleStory Character Lookup
Look up a character's level, key stats, Union, Mu Lung Dojo record and equipped items by name.
📆
Lifestyle
D-Day Calculator
See exactly how many days remain until a special date.
✨
Tests
My Energy Type
A light personality test with just five questions.
⚡
Tests
Reaction Time Test
Click when the screen changes color and measure your reaction time in milliseconds.
✍️
Files & documents
Word & Character Counter
Count words, characters, lines and UTF-8 bytes in real time.
🖼️
Files & documents
Image Compressor & Resizer
Resize, compress and convert images to JPG, PNG or WebP in your browser.
✂️
Files & documents
Image Cropper & Rotator
Crop a photo to a custom ratio, rotate or flip it, and save it as JPG, PNG or WebP.
🪄
Files & documents
Portrait Background Remover
Remove portrait backgrounds with on-device AI and save a transparent PNG.
🗓️
Lifestyle
Date & Weekday Calculator
Find the difference between dates, count weekdays and add days.
⚡
Public data
Live EV Chargers in Korea
Check regional charger status with official Korean public data.
🌍
Public data
Global Country Data Comparison
Compare GDP, population, life expectancy and other official World Bank indicators.
🌋
Public data
Live Global Earthquake Map
Explore the magnitude, location and depth of recent earthquakes using the live USGS feed.
💱
Public data
Official Exchange Rate Calculator
Convert currencies with ECB reference rates and compare their 90-day trend.
🔢
Random picks
Random Number Picker
Draw secure random numbers with custom ranges, exclusions and duplicate rules.
🎡
Random picks
Name Wheel
Paste names or choices and spin an animated wheel to pick a winner.
👥
Random picks
Random Team Generator
Shuffle a participant list into evenly distributed teams.
🌧️
Sound & audio
Focus Sound Mixer
Mix synthesized rain, fireplace and café sounds for focus or relaxation.
📈
Lifestyle
Average Cost Calculator
Calculate the new average price, quantity and cost after another purchase.
🏆
Viral & social
Custom Favorite Tournament
Run a knockout tournament with your own food, movie or game candidates.
🖥️
Monitor & device
Dead Pixel & Retention Test
Cycle full-screen solid colors to inspect pixels and image retention.
🛂
Lifestyle
Korean Name Romanizer
Generate English spelling suggestions for a Korean name and passport reference.
🎞️
Video & GIF
Video to GIF Converter
Trim part of a video and turn it into a GIF entirely in your browser.
📊
Data visualization
Chart Image Generator
Turn values into clean bar, pie or line charts and save PNGs.
👁️
Tests
Color Vision Challenge
Find the subtly different tile and measure your color sensitivity.
🎨
Files & documents
Palette & Gradient Studio
Extract five key colors from a photo and build CSS gradients.
📝
Files & documents
Markdown & Text Diff
Preview Markdown live and highlight differences between two texts.
🎯
Games
Aim Trainer
Click random targets to measure mouse speed and accuracy.
🤖
Developer tools
Prompt Maker & Summary
Turn rough requests into clear prompts and summarize long text.
🧰
Developer tools
JWT, Cron & Mock Data
Decode JWTs, build Cron expressions and generate JSON or CSV test data.
🎬
Files & documents
Creator Image Resizer
Resize one image for Chzzk, Twitch, SOOP and YouTube presets.
▶️
Files & documents
YouTube Thumbnail Grabber
View and download thumbnails in multiple sizes from a video URL.
🌙
Lifestyle
Sleep & Hydration Calculator
Estimate 90-minute sleep cycles and daily water needs.
💬
Games
Fake Chat Capture Maker
Turn names and messages into a messenger-style PNG image.
🤣
Games
Meme Caption Maker
Add top and bottom captions to an image and save a shareable meme.
🟩
Games
Korean Wordle
Guess a five-syllable Korean word in six attempts.
➗
Tests
One-minute Mental Math
Solve arithmetic for 60 seconds and compare your ranking.
🏫 Coming soon
Public data
Find Local Academies
Search regional academy information using public data.
Small but useful
We start with lightweight tools you can use right away, no sign-up required.
Public data made friendly
We turn complex datasets into everyday questions and simple screens.
A little fun, too
Tests and mini games will keep joining the collection.