Best Free CSS Tools 2026 — Gradients & Shadows
GainUtility's CSS toolkit helps designers and developers create beautiful visual effects with live preview. Here are the essential CSS tools.
Top 4 CSS Tools
- Gradient Generator — Create linear and radial CSS gradients with multiple color stops. (Best for: Backgrounds, hero sections, buttons)
- CSS Box Shadow Generator — Design layered, inset, or soft CSS box shadows with custom controls. (Best for: Card designs, depth effects, UI polish)
- Contrast Checker — Verify WCAG AA and AAA color contrast compliance. (Best for: Accessibility audits, design system validation)
- Border Radius Generator — Design asymmetric corners and organic blob shapes. (Best for: Custom shapes, modern UI elements)
Guides for the jobs above
What box-shadow values real websites actually useMeasured offsets, blurs and alphas instead of numbers chosen by feel.Soft shadow CSS recipes that don't turn out muddySet alpha first, then offset and blur - the order that keeps shadows clean.box-shadow vs filter: drop-shadow() - which to useWhy the two look different on the same shape, and when each one is right.How to tune CSS gradients, shadows and contrast without guessingOne pass over colour, contrast and edges instead of nudging values blindly.Neumorphism box shadow: the two-layer formula and its limitsWhere the style works, where it fails accessibility, and the focus-ring fix.Frequently Asked Questions
Can I export CSS code from these tools?
Yes. All CSS tools generate copy-ready CSS code. Some tools also support Tailwind CSS class approximations and PNG exports.
Are the CSS rules cross-browser compatible?
Yes. Our tools output standard W3C-compliant CSS that works in all modern browsers.