CSS Tools

Utility369's CSS Tools are 27 visual generators for the styling work that's usually faster to build with sliders and live preview than by hand-tuning numbers in a stylesheet. Every generator updates its output the moment a control changes, and every result is copy-paste-ready CSS, no build step, no plugin, and nothing to install beyond a browser tab, ready to drop into any framework or plain HTML page.

Hand-writing values like cubic-bezier easing curves, multi-layer box-shadow offsets, or an HSL-based neumorphism shadow pair usually means trial and error, tweak a number, refresh, repeat. A visual generator turns that loop into direct manipulation, drag a handle or move a slider and watch the preview and the generated code update together, which is faster for getting a specific look and easier for learning what each CSS property actually controls. It's also a fast way to prototype, a landing page hero, a card component, or a button state can be styled visually in a few minutes instead of iterating directly in a stylesheet and reloading the page after every change.

Visual effect generators

The CSS Gradient Generator, CSS Glassmorphism Generator, and Neumorphism Generator build the layered, translucent, and soft-UI looks common in modern interfaces. The Box Shadow Generator and Text Shadow Generator stack up to several shadow layers with live offset, blur, and color controls, the CSS Filter Generator combines nine filter functions on a live preview, and the CSS Background Pattern Generator and CSS Text Glitch Effect cover repeatable patterns and neon-style animated text.

Layout builders

The CSS Flexbox Builder and CSS Grid Builder turn direction, alignment, and track sizing into a live layout preview alongside the generated code. The Border Radius Generator, CSS Spacing Scale Generator, and CSS Clamp Generator round out the layout group, the last one includes a viewport width simulator for previewing fluid typography and spacing at different screen sizes.

Shapes and SVG

The SVG Blob Generator and SVG Pattern Generator produce organic shapes and clean tiling patterns as SVG code, the SVG Stroke to Fill tool converts a stroked path into a filled shape, the CSS Clip-Path Generator builds triangles, polygons, stars, and speech bubbles visually, and the CSS Triangle Generator handles the classic border-trick triangle, a common building block for tooltips, dropdown arrows, and speech bubble tails.

Color tools

The CSS Color Picker & Converter keeps HEX, RGB, and HSL in sync as any one of them changes, the CSS Color Contrast Checker runs the real WCAG 2.1 ratio between two colors with AA/AAA pass-fail badges, and the CSS Color Palette Generator builds complementary, analogous, triadic, and monochromatic palettes from a single base color.

UI components and utilities

The CSS Checkbox Generator and CSS Switch Generator style common form controls, the CSS Loader Generator builds animated spinners, and the CSS Cubic Bezier Generator lets a custom easing curve be dragged into shape visually. The CSS Beautifier formats or minifies a stylesheet with a real brace-aware parser, and the PX to REM/EM Converter converts single values or batch-converts every px value in a block of CSS.

Picking the right tool

Styling a card, button, or panel usually starts with the effect generators for shadows, gradients, or glass effects. Structuring a page calls for the Flexbox or Grid Builder instead. Anything involving an organic or non-rectangular shape belongs with the SVG and clip-path tools, and picking or checking a color palette is faster with the dedicated color tools than eyeballing hex codes. The search bar matches by what each generator produces, so typing "shadow" or "gradient" jumps straight to the right one, without needing to know which section of the grid it's grouped under.