Convert between HEX, RGB and HSL with an instant colour preview.

Percent-encode UTF-8 text for use in URL components.

Create editable, coordinated palettes with copyable colour values.

Decode valid percent-encoded UTF-8 URL components.

Check text and background contrast against WCAG guidance.

Escape HTML-sensitive characters without changing the underlying text.

Design layered-looking CSS box shadows with live preview.

Decode named and numeric HTML entities safely as plain text.

Set each corner radius and copy the resulting CSS.

Convert text to and from JavaScript-style Unicode escapes.