OgleOgle
Handy tools
Document work, unit conversion, character and byte counter, JSON formatter, color converter, password generator, QR code generator, word cloud, Korean age calculator, D-day counter, take-home salary calculator, lotto number generator, ladder game, roulette, marble roulette, and more — OgleOgle's tools are a free utility collection that gathers the most frequently needed everyday, work, and study utilities onto a single page. Instant use with no sign-up, login, or payment required, and because every operation runs 100% inside your browser, the data you enter (text being counted, JSON data, password patterns, color codes, and so on) is never sent to a server, giving you full privacy. Works identically on mobile, tablet, and PC, with no app install — use it straight from the browser. You can also instantly share your results with friends and coworkers via KakaoTalk or email, making it a fast everyday tool for meetings, assignments, and daily life.
Monitor Test
Dead pixels, refresh rate (Hz) and ghosting — test your screen in the browser, no install.
JSON Formatter
Free online JSON formatter that auto-indents, validates, and minifies. Perfect for API debugging and config tidying.
Password Generator
Generate strong random passwords in one second with length, case, number, and symbol options.
QR Code Generator
Generate QR codes for URLs, Wi-Fi, contacts, social, calendar, maps — 11 types, one-click, free download.
Word Cloud Generator
Paste text, pick from 15 mask shapes, get a word-frequency cloud — and download a PNG, all for free.
Age Calculator
Enter your birth date and get international age, Korean age, and year-based age at once — plus zodiac, star sign, and a birthday countdown.
Character Counter
Live counts for resumes and essays — with/without spaces, bytes, manuscript paper, and goal progress in one screen.
Salary Calculator
Enter your Korean annual salary and instantly see 2026 take-home pay after social insurance and income tax — plus a salary-bracket comparison table.
Percentage Calculator
N% of a value, ratios, percent change, and discounts — enter two numbers and get instant results!
White Screen
A full-screen pure white (and other solid colors) — for lighting, dead pixel checks and screen cleaning, right in the browser.
Black Screen
A pure full-screen black display — check OLED burn-in, backlight bleed, or just dim your monitor. No install.
Keyboard Test
Check that every key works — spot dead keys, stuck keys and ghosting, right in your browser.
Mouse Test
Test mouse buttons, wheel, double-click and chatter (misfiring clicks) in your browser.
Microphone Test
Check that your mic picks up sound — volume meter, live waveform and pitch, right in your browser.
Webcam Test
Check your webcam in the browser — live preview, resolution and frame rate, with camera switching and snapshots.
Speaker Test
Check your speakers or headphones and confirm the left/right channels aren't swapped — right in your browser.
Date Calculator
How many days between two dates? What day is N days from now? Duration and date add/subtract in one page.
Lotto Number Generator
Feeling lucky? Generate Korean Lotto 6/45 picks with fixed numbers, exclusions, odd/even balance, and prize-tax math in one page.
Ladder Game (Ghost Leg)
Settle coffee bets, chore duty, and turn order — a Korean-style ladder game where one click animates the path. Up to 10 players.
Marble Roulette
Named marbles tumble through pegs, spinning bars, funnels, and a roller-coaster course to decide the ranking. Watching is half the fun.
Roulette Wheel
From lunch menus to penalty picks, one spin settles it — a casino-style random roulette wheel with custom entries and weights.
D-day Calculator
How many days until your exam, anniversary, or deadline? Countdowns, business-day counts, and 10 saved D-days in one page.
Interest Calculator
Recurring or lump-sum, simple or compound, with after-tax payout — enter a rate and term for instant maturity interest!
TDEE Calculator
Find your maintenance calories in seconds — enter your stats and see BMR, TDEE, and cut/maintain/bulk targets.
Ovulation Calculator
Enter your last period and cycle length to get your ovulation day, fertile window, next period and due date at once!
Lands of Jail Building Calculator
Add up the Advanced Forticlad Cores and Forticlad Cores your FC building upgrades need — all 7 buildings at once.
Frequently Asked Questions
Q. What tools are available?
A. We offer 15+ free utility tools including document tools (character/byte counter, JSON formatter), unit conversion, color conversion, password generator, QR code generator, word cloud, Korean age/D-day/take-home salary calculators, lotto number generator, and ladder game / roulette / marble roulette.
Q. Is my input data sent to a server?
A. No — every tool runs 100% inside your browser. Text, JSON, passwords, and other input you provide are never sent to a server, so your privacy is fully protected.
Q. Do they work well on mobile?
A. Yes — mobile (iOS and Android), tablet, and PC all work identically, with no app install required. Use them straight from your browser.
Q. Do I need to sign up?
A. No — you can use every tool instantly with no sign-up, login, or payment. You can also share your results with friends and coworkers via KakaoTalk or email right away.