Tools

Calculate a percentage, a share, or a percentage change.

Resize a local image and export PNG, JPEG, or WebP.

Calculate mean, median, minimum, maximum, sum, and range.

Simplify a whole-number ratio and calculate its proportions.

Count words, characters, lines, and approximate sentences.

Convert uppercase, lowercase, title case, and code naming styles.

Sort lines, remove duplicates, trim whitespace, or remove empty lines.

Replace literal text with optional case sensitivity.

Turn a title into a clean lowercase URL slug.

Securely pick an item or shuffle a list on your device.

Run a local countdown with work and break presets.

Measure elapsed time and record laps locally.

Design a color gradient and copy ready-to-use CSS.

Convert HEX colors into RGB and HSL values.

Measure WCAG contrast ratios for two colors.

Preview a box shadow and copy the CSS.

Tune rounded corners with a live preview.

Convert pixel dimensions using your root font size.

Reduce dimensions to their simplest aspect ratio.

Generate a consistent CSS spacing token scale.

Generate a modular scale of font sizes in rem.

Convert red, green, and blue components into a HEX color.

Convert hue, saturation, and lightness into a HEX color.

Build a tonal palette from a base color.