CSS & HTML Tools

Visual CSS tools eliminate guesswork. Generate gradients, flexbox layouts, grid templates, and fluid clamp values with live previews — then copy the code straight into your stylesheet.

• CSS Gradient GeneratorCSS gradient generator — create linear and radial CSS gradients visually. Also called CSS generator gradient or CSS background gradient builder. Pick colors, angle, and type — get copy-ready CSS gradient code.
• CSS Box Shadow GeneratorCSS box shadow generator — build and preview CSS box-shadow values visually with live output. Also called CSS shadow generator or box shadow CSS generator. Copy the ready-to-use CSS code instantly.
• CSS Flexbox GeneratorFlex CSS generator — generate CSS flexbox layouts with a live visual preview. Also called flexbox generator or flex layout builder. Set justify-content, align-items, flex-wrap, and gap — copy the ready CSS code.
• CSS Grid GeneratorCSS grid generator — create CSS grid layouts with column, row, and gap controls. Also called grid generator or grid CSS generator. Set grid-template-columns, rows, and gaps visually — copy the output CSS instantly.
• CSS Clamp CalculatorGenerate fluid responsive CSS clamp() values for any property.
• Color Contrast CheckerCheck WCAG AA/AAA color contrast ratios for accessible text and backgrounds.
• CSS Unit ConverterConvert between px, rem, em, pt, vw, and vh CSS units instantly.
• Aspect Ratio CalculatorCalculate aspect ratios from dimensions, reverse-calculate missing dimensions, and resize proportionally with common presets for video, photo, and CSS layouts.
• HTML → JSX ConverterConvert HTML to React JSX — transforms class→className, for→htmlFor, onclick→onClick, inline styles to JS objects, and adds self-closing tags for void elements automatically.
• CSS Specificity CalculatorCalculate CSS selector specificity in (a,b,c) format — enter selectors one per line, sorted by specificity score. Handles IDs, classes, attributes, pseudo-classes, :not(), :is(), and element selectors.