Chat Web (chat.onl.jp)
A web app for real-time chat directly in the browser without account registration. Share a URL to start a conversation with multiple people instantly.
Clothes Manager Web (clothes.onl.jp)
A web app for managing your clothing collection online. Register items by type, color, and brand to digitize your wardrobe and plan outfits more easily.
Color Web (color.onl.jp)
A color picker web tool to select colors and convert them to HEX, RGB, HSL, and other color code formats. Useful for checking color palettes in web design and creative work.
Compass Web (compass.onl.jp)
A digital compass web tool that uses your smartphone or tablet's orientation sensor to display the current direction in the browser. Check your bearings without installing any app.
Counter Web (count.onl.jp)
A simple web counter that supports count-up and count-down with just a button press. Useful for inventory tracking, headcounts, vote tallying, and many other purposes.
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.
Four Pillars of Destiny (destiny.onl.jp)
A web app for fortune-telling based on the Four Pillars of Destiny (Shichusuimei / Ba-Zi) using birth date and time. Easily check personality and fortune through this traditional East Asian divination method.
Dice Web (dice.onl.jp)
A web tool to roll dice in the browser. Roll one or multiple dice at a time, great for board games, tabletop RPGs, and other activities.
Text Diff (diff.onl.jp)
A web tool to visually compare two pieces of text and highlight their differences. Additions, deletions, and changes are color-coded for quick review of what has changed.
Digital Clock (digital.onl.jp)
A web app that displays a large, easy-to-read digital clock in the browser. Ideal for displaying the time on screen during presentations, classes, and events, with full-screen support.
Division Challenge (divided.onl.jp)
A math practice web app where you solve division problems within a time limit. Great for improving children's arithmetic skills or as a brain workout for adults, with score tracking.
HTML Entities (entity.onl.jp)
A web tool to look up and search HTML entities (such as &, <, etc.). Useful for converting characters to HTML entities and investigating special characters.
