CSS Color Tester (www.oh-benri-tools.com)
An online tool for testing combinations of text color, box color, and background color with a color picker in real time. CSS output is automatically generated, making it useful for confirming web design color schemes.
Easy Timer (www.oh-benri-tools.com)
A simple online timer with one-click time setting. Choose from presets ranging from 30 seconds to 60 minutes, with adjustable alarm sound type and volume. Fullscreen display supported.
English Word Counter (www.oh-benri-tools.com)
An online tool for counting words, sentences, characters, and lines in English text. Supports file drop or direct text input, and input content is not sent to the server.
How Many Days Until Saturday?
An online tool that counts the remaining days until Saturday (or any day of the week). Also supports fullscreen display and image download.
HSL/HSV Color Picker (www.oh-benri-tools.com)
A color picker for adjusting HSL, HSV, RGB, and alpha values with sliders. Features color saving and history, and supports preset palettes including Material Design and Flat UI.
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.
JSON Formatter (www.oh-benri-tools.com)
An online tool for formatting JSON data. Supports drag-and-drop file input and displays results in real time with line numbers and syntax highlighting. All processing is done in the browser.
Kaki-no-Tane Ratio Simulator
An online tool for simulating the ratio of Kaki-no-Tane (rice crackers) to peanuts. Press buttons to adjust input amounts and check ratios in real time. Includes a feature to download the results as an image.
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.
Length Converter (www.oh-benri-tools.com)
An online tool for converting length units. Supports numerous units including km, cm, mm, inches, feet, miles, and light years, with customizable significant figures and rounding methods.
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.
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.
