WebGL Gradient Generator

A WebGL gradient is a gradient that gets rendered by your graphics card rather than by the browsers CSS engine. This matters because graphics cards can do things CSS cannot. They can run procedural noise functions, compute fractal patterns, blend colours non-linearly, and apply complex per-pixel logic, all in real time at 60fps. CSS gradients are powerful but fundamentally limited to interpolating colours between stops along one or two axes. WebGL gradients have no such limitation.

The trade-off is complexity. Writing a WebGL shader from scratch requires learning GLSL (the OpenGL Shading Language), understanding how vertex and fragment shaders pipeline together, and dealing with WebGL initialisation boilerplate. The Gradients.design studio removes all of that. You pick from a library of pre-built shader presets and adjust their parameters via sliders. The shader work happens under the hood; you get the visual result.

If you have ever seen the plasma effect from a 1990s demoscene production, or the "liquid lava" visualisation on a music app, or the procedural noise patterns on a generative-art NFT, those are all WebGL gradients (or close cousins). The studio brings the same kind of visual to designers who do not write shader code.

The studio ships 8+ named shader presets, each tuned to a recognisable visual style:

• Plasma. The classic demoscene effect: smoothly varying coloured blobs that morph continuously. Uses layered sine waves at different frequencies.
• Ocean. Slow horizontal flow with caustics-like bright streaks. Reads as water surface viewed from below.
• Lava. Slow bubbling motion with hot bright spots against a dark warm base. Reads as molten metal or lava.
• Holographic mesh. Iridescent grid pattern that shifts colours as parameters change. Useful for sci-fi UI.
• Voronoi cells. Smooth cellular tiling with each cell flowing slowly into neighbours. Different from the crystal generators sharp-edged voronoi.
• Turbulent flow. Procedural noise with directional bias. Reads as smoke, fog, or atmospheric haze.
• Fractal noise. Multi-octave noise with adjustable detail level. Useful for generative art and texture work.
• Marble. Veined patterns reminiscent of polished marble surfaces. Pair with a metal palette for marble-and-gold luxury aesthetics.

Each preset has its own parameter set, but most include frequency (how busy the pattern is), amplitude (how strong the variation is), speed (how fast the pattern animates), and palette (the colours it pulls from). You can switch presets at any time without losing your palette.

A WebGL shader has two stages. The vertex shader positions a flat plane in 3D space (for full-screen gradients, this is just a quad covering the canvas). The fragment shader runs once per pixel and decides what colour that pixel should be. The fragment shader is where all the interesting work happens.

For a plasma gradient, the fragment shader does something like:

precision highp float;
uniform vec2 u_resolution;
uniform float u_time;
uniform vec3 u_color1;
uniform vec3 u_color2;

void main() {
  vec2 uv = gl_FragCoord.xy / u_resolution;
  float n =
    sin(uv.x * 8.0 + u_time) +
    sin(uv.y * 6.0 + u_time * 0.7) +
    sin((uv.x + uv.y) * 5.0 + u_time * 1.3);
  float t = n * 0.166 + 0.5;
  vec3 color = mix(u_color1, u_color2, t);
  gl_FragColor = vec4(color, 1.0);
}

That short snippet produces the classic plasma effect. The studio ships variations of this for every preset, plus the engineering plumbing (initialisation, uniform updates, resize handling, cleanup) that you would have to write yourself if doing this from scratch. For the React component export, the studio bundles the shader, the plumbing, and a React-friendly wrapper so dropping it into a Next.js or Vite app is a single import.

1. Open the WebGL editor. Visit the free WebGL gradient generator. The canvas opens with a default plasma preset running.
2. Pick a shader preset. Plasma, ocean, lava, holographic mesh, voronoi cells, and more. Each preset is a distinct GLSL shader tuned for a particular visual style.
3. Tune parameters and palette. Each shader has 3 to 6 sliders for frequency, amplitude, and colour mix. Add 2 to 6 colours to the palette; the shader uses these as its source.
4. Export. PNG up to 8K for static use. MP4 and WebM video on Pro plans capture the shader animation for video backplates and motion design.

Two different tools for two different problems. Knowing which to reach for matters because the wrong choice costs either visual quality or page performance.

Rule of thumb: use CSS when a flat colour blend will do the job. Use WebGL when you need procedural patterns, complex motion, or interactivity. For static marketing pages, export a PNG from the studio (best of both worlds, zero runtime cost).

Three options ranked by complexity:

Static PNG background (simplest)

.hero {
  background: url('/your-webgl-export.png') center / cover no-repeat;
  min-height: 100vh;
}

Zero runtime cost. Renders identically on every device. Lose the live animation; gain bulletproof performance. Use this for marketing pages where the gradient does not need to animate.

MP4 video background

<video
  autoplay muted loop playsinline
  poster="/your-webgl-export.jpg"
  style="position:absolute;inset:0;width:100%;height:100%;object-fit:cover;"
>
  <source src="/your-webgl.webm" type="video/webm" />
  <source src="/your-webgl.mp4" type="video/mp4" />
</video>

Captures the animation as a video file. About 1 to 2 MB for a 10-second loop at 1080p. Works in every browser. Use this when you want the animation but do not need user interactivity.

Live WebGL React component

'use client'
import { WebGLGradient } from './WebGLGradient'

export function HeroSection() {
  return (
    <section className="relative min-h-screen">
      <WebGLGradient
        preset="plasma"
        colors={['#6366f1', '#ec4899', '#f59e0b']}
        speed={0.5}
        className="absolute inset-0"
      />
      <h1 className="relative z-10 text-white">Your headline here</h1>
    </section>
  )
}

Live shader running in the browser. Costs ~100 KB of JavaScript and continuous GPU work. Use when you need interactivity (mouse-following effects, scroll-driven parameters) or per-user variation.

WebGL gradients are GPU-bound: the cost is determined by canvas resolution and shader complexity, not by JavaScript or DOM. On modern devices, a typical shader runs at 60fps at full screen resolution with no measurable CPU load.

Where performance gets tricky:

• High-DPI screens. A retina MacBook renders WebGL at 2x or 3x resolution. A 1440p display becomes 5120 by 2880 worth of pixels. On older devices this can drop frame rate. The studios React component caps DPR at 2 by default.
• Multiple shaders on one page. Each WebGL context has overhead. Running 5 separate WebGL gradients on one page wastes GPU and may exhaust available WebGL contexts (browsers limit to 16). For complex pages, render once and reuse via WebGL textures.
• Battery drain. Live WebGL shaders run continuously, which drains mobile battery faster than static backgrounds. For battery-sensitive contexts (mobile-first sites), prefer PNG or MP4 export.

For Core Web Vitals: live WebGL adds to Total Blocking Time during initial render (the WebGL context has to initialise). If LCP matters, export PNG or MP4 instead. The studio version of the React component lazy-loads after first paint to avoid hurting LCP.

• Game and app launch screens. Where a static gradient would feel dead and a video would feel pre-recorded.
• Music visualisations. Particularly useful when you want the visualisation to respond to audio data via JavaScript hooks.
• Generative art and NFT collections. Procedural shader output gives infinite variation from one shader file.
• Advanced product marketing. When you want a hero that feels alive and responds to scroll or mouse position.
• Brand identity motion design. Especially for tech, AI, and forward-looking consumer brands.
• Educational visualisations. Demonstrating concepts like noise, turbulence, or fractal geometry where the math is the message.
• Demoscene-revival art. Classic plasma and turbulent flow effects are having a renaissance in 2026 as part of the broader Y2K and demoscene revival.

1. Using WebGL when CSS would do. If a simple linear gradient solves the problem, do not reach for WebGL. The added complexity and runtime cost are not worth it.
2. Not exporting as PNG when motion does not matter. Static marketing pages should usually use a PNG export, not a live shader. Same visual, zero runtime cost.
3. Multiple WebGL contexts on one page. Each context has overhead and browsers limit you to 16. If you need multiple gradients, render once and tile or duplicate via CSS background-image.
4. Running at uncapped DPR on mobile. Mobile retina screens at 3x DPR can tank frame rate. Cap at 2x or even 1.5x for animated shaders.
5. Ignoring fallback for users who disable WebGL. About 1 to 2 percent of users have WebGL disabled. The studios React component falls back to a static gradient automatically; if writing your own, add a feature detect.
6. Overcomplicating the shader. Most marketing use cases need plasma or turbulent flow. Resist the urge to layer five effects together; the result usually reads as visual noise rather than as a designed composition.