This free online tool removes duplicate lines from any text and offers optional sorting (alphabetical, ASCII, or reverse). Perfect for cleaning logs, code, lists, or datasets, it processes everything in your browser. Fast, private, and easy to use for writers, developers, and data workers.
Online validation and testing tools for web developers. Learn which tools you need to validate HTML, CSS, JavaScript, security, and accessibility (a11y) in your web projects.
CSS specificity calculator that shows how browsers prioritize styles. Enter any selector to see its specificity score for ID, class, and type selectors.
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