Turns a title or headline into a clean URL slug in real time: it lowercases the text, replaces spaces with your chosen separator, strips characters that are not letters, digits or the separator, collapses repeated separators and trims them from both ends. The result is safe to drop into a URL or a filename.
By default non-ASCII characters (such as Chinese, accents or emoji) are removed. Enable “Keep Unicode” to preserve them using a percent-encoded, URL-safe form instead. Everything is computed in your browser as you type.