Bingo Card (www.oh-benri-tools.com)
An online tool for generating and using bingo cards in a browser. Click card numbers to mark them, and pair with the Bingo Game tool to play bingo.
Playing Cards Chain Game
A browser game where you select from 4 cards on the table cards that share the same number or suit as the previous one, aiming to select all 52 cards. Includes a high score display and card checklist.
Password Generator (www.oh-benri-tools.com)
An online tool for generating large numbers of random passwords. Individually configure uppercase letters, lowercase letters, numbers, and symbols, and adjust length and count with sliders. Bulk download as a text file is also available.
QR Code Generator (www.oh-benri-tools.com)
An online tool for generating QR codes from text in real time. Adjust size and error correction level (L/M/Q/H) with a slider, and save the generated QR code as an image.
Simple Slide Creator (www.oh-benri-tools.com)
An online tool for creating simple slides in a browser. Supports adding, moving, and formatting text, as well as fullscreen display and downloading as an image. Input data is not sent to the server.
Image Mosaic / Blur (www.oh-benri-tools.com)
An online tool for applying mosaic or blur effects to any area of an image by dragging. Customize the mosaic coarseness and fill color, with all processing done in the browser.
Toilet Sound Generator
An online tool that plays a toilet flushing sound when a button is pressed. Adjust the volume with a slider and includes a timer function.
Kanji Magnifier (www.oh-benri-tools.com)
An online tool for displaying complex kanji characters in a large font. Text is displayed enlarged in real time as you type, with slider-adjustable size. Useful for checking the strokes of difficult kanji.
Metronome (www.oh-benri-tools.com)
An online metronome for use in a browser. Adjust tempo with a pendulum or slider, with support for beat and volume settings and spacebar operation. Fullscreen display is also available.
Tuning Fork (www.oh-benri-tools.com)
A digital tuning fork tool for use in a browser. Select scale and octave with sliders, with preset buttons for tuning guitar, bass, violin, and other instruments. The reference frequency can also be changed.
Base64 Encode / Decode (www.oh-benri-tools.com)
An online tool for encoding and decoding text or files in Base64 format. Supports drag-and-drop file input, with a toggle to switch conversion direction. All processing is done in the browser.
Naming Convention Converter (www.oh-benri-tools.com)
An online tool for converting between programming naming conventions such as camelCase, PascalCase, snake_case, and kebab-case. Input text is instantly converted to all formats.
