Online Tools

Browse all tools hosted on "Online Tools".

Collaboration

Camera Share Web (camera.onl.jp)

A web app to share real-time camera footage from a smartphone or PC through the browser. Start a video feed instantly just by sharing a URL.

Image generation

Calligraphy Web (font.onl.jp)

A web tool to display and output text in a Japanese calligraphy (mouhitsu) brush font style. Useful for creating templates for noshi envelopes, New Year's cards, and calligraphy practice.

Date & time

Calendar Web (calendar.onl.jp)

A simple calendar web app that runs in the browser. Supports monthly and weekly views, making it easy to check schedules and track dates.

Calculation

Calculator Web (calc.onl.jp)

A simple calculator web app that runs in the browser. Supports basic arithmetic operations and is easily accessible from smartphones, tablets, and PCs.

Network

Browser Info Web (browser.onl.jp)

A web tool to display information about your current browser, version, OS, and screen resolution. Useful for verifying browser compatibility and gathering details for support inquiries.

Calculation

BMI Calculator (bmi.onl.jp)

A web tool to calculate BMI (Body Mass Index) from height and weight and determine obesity level. Also displays a guide to ideal weight for health management.

Finance

Bitcoin (bitcoin.onl.jp)

A web tool to check real-time Bitcoin (BTC) price charts. Displays prices in Japanese Yen and US Dollars, letting you monitor cryptocurrency price movements.

Calculation

Bill Splitter (warikan.onl.jp)

A web tool to equally split dining or party expenses among multiple people. Instantly calculates the amount per person including rounding, reducing the burden on the organizer.

Date & time

Anniversary Web (date.onl.jp)

A web app to register anniversaries such as birthdays and wedding anniversaries, then manage countdowns and days elapsed. Always keep track of your important special days.

Date & time

Analog Clock (watch.onl.jp)

A web app that displays an analog clock in the browser. Shows the current time with a simple, clean design that can also be used as an ambient display piece.

Training

Addition Challenge (plus.onl.jp)

A math practice web app where you solve addition problems one after another within a time limit. Great for improving children's arithmetic skills or as a brain workout for adults, with score recording.

Task management

Account Balance Manager (bank.onl.jp)

A web app to centrally manage balances across multiple bank accounts in the browser. Enter account names and balances to get a simple overview of your total assets.

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