Oritena — practical tools that run in your browser
CalendarBrowse dates by month or week, with holidays for your selected region in Japan or the United States.
Color PaletteBuild tints, shades and harmonies from one color, with contrast ratios against white and black and the WCAG verdict.
Date & Day CalculatorCount the days between two dates, or find the date a number of days before or after a base date. Results come with the day of the week.
JSON Formatter & ValidatorFormat JSON so it reads clearly, or minify it to a single line. If it is broken, you get the line and column of the problem.
Character CountCounts characters, lines and paragraphs of the text you paste, as you type.
Image Resize & CompressShrink images in bulk by width or ratio and export them as JPEG, PNG or WebP. Everything runs on your device.
Password GeneratorGenerate passwords in bulk with the length, character sets and count you choose, using your device's cryptographic randomness.
QR Code GeneratorPaste a URL or text and get a QR code right away. Save it as PNG or SVG.