Desu/Masu Converter (tone.onl.jp)
A web tool to convert Japanese text between polite (desu/masu) form and plain form. Useful for unifying the writing style of business documents and blog articles.
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.
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.
Digital Clock (www.piliapp.com)
An online digital clock displaying the current time in real time. Supports 12-hour and 24-hour formats with a clean, large display suitable for presentations and classrooms.
Digital Clock for Streaming (www.ruri.info)
Free digital clock generator for live streamers. Choose from 8 styles including gradient, color, neon, and bubble clocks, with customizable colors and animations. The generated URL can be used as a browser source in OBS Studio.
Discord Overlay CSS (www.ruri.info)
Discord overlay customization tool for live streamers. Choose from cute, classic, and other styles with customizable icon shapes, colors, and animations. Apply the generated CSS to OBS Studio via Streamkit or Discord Reactive.
Discount Price Calculator (saruwakakun.com)
A discount price calculator that instantly computes the final price from the original price and a discount rate. Save multiple results to check the total discounted amount.
Distance Measurement Web (measure.onl.jp)
A web tool to measure the distance between two points in real time using GPS in the browser. Useful for tracking travel distance during walks and exercise.
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.
Download Emoji Images (www.piliapp.com)
An online tool to download emoji images as PNG files. Browse all emoji and download high-quality images for use in design projects, presentations, and documents.
Draw Lots (www.piliapp.com)
An online lot-drawing tool for fair random selection. Enter options and draw lots to randomly pick one, useful for deciding turns, assignments, or prizes.
drawDB
Free and open-source online database diagram editor and SQL generator. Design tables and relationships with drag-and-drop, then export DDL for MySQL, PostgreSQL, SQLite, MariaDB, or SQL Server. No sign-up required.
