CSS Border Radius Generator
Design rounded corners visually with live preview. Control each corner independently, switch between px and %, or use elliptical radii for pill and blob shapes. 12 quick presets included.
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CSS Specificity Calculator
Calculate CSS selector specificity as (inline, ID, class, element) notation. Compare two selectors to see which wins the cascade. Supports :not(), :is(), :has(), :where(), attribute selectors, and pseudo-elements.
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AI JSDoc Generator
Paste any function or class signature and get a complete JSDoc, TSDoc, Python docstring, or Rust doc comment generated instantly. Parses parameter types, return types, and async modifiers automatically.
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API Key Generator
Generate cryptographically secure API keys in your browser. Choose from hex, UUID v4, JWT-style, base64url, alphanumeric, and numeric formats. Add prefixes and grouping.
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