Color Extractor (web-toolbox.dev)
Free tool for bulk-extracting color codes such as HEX, RGB, and HSL from text or CSS. Handy for pulling all color information from large stylesheets or HTML.
Color Converter (web-toolbox.dev)
Free tool for converting between color code formats such as HEX, RGB, HSL, and HSV. Enter a color code to view all format values at once.
Color Contrast Checker (web-toolbox.dev)
Free tool for calculating the contrast ratio between two colors and checking whether they meet WCAG accessibility standards (AA and AAA). Useful for checking text and background color readability.
Color Code Converter (www.oh-benri-tools.com)
An online tool for converting between RGB (decimal), hexadecimal, RGBA, and CSS color formats. Instantly displays results in multiple formats in real time after input.
Color Accessibility Checker (toolpods.io)
Calculate the contrast ratio between two colors and check compliance with WCAG accessibility standards. Verify that text and background color combinations meet the required ratios.
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.
Clock (www.oh-benri-tools.com)
An online clock that displays the current time. Shows accurate time and supports display format switching and fullscreen view.
Click Speed Test (www.ruri.info)
Free click speed measurement tool. Choose from 10, 30, or 60 second durations and measure how fast you can click. Use as a mini-game in streams or as an OBS Studio browser source.
Click Counter (lazesoftware.com)
A simple click counter for quickly tallying numbers. Supports negative counts and multiple simultaneous counters with customizable names and step values. Data is automatically saved in the browser and can be exported as a text file.
Chinese Zodiac & Age Reference (saruwakakun.com)
A reference table for looking up the Chinese zodiac sign (Eto/Junishi) by year. Lists the zodiac animal alongside the Western year, Japanese era, and age at a glance.
Checklist Web (list.onl.jp)
A web app to manage tasks and packing lists in a checklist format in the browser. Easily add, check off, and delete items as needed.
Check Actual Size (www.piliapp.com)
An online tool to display objects at their actual physical size on screen. Calibrate your monitor using a credit card and view items like rulers and coins at true scale.
