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What is css-doodle?
css-doodle is a web component for making visual art with CSS. Instead of hand-writing hundreds of elements, you write a short CSS-like rule set that the component repeats, varies and renders as patterns, shapes, backgrounds or decorative graphics. The project describes itself as empowering CSS as an artistic language, and its examples span graphic patterns, visual backgrounds, handcrafted icons and generative decorations.
Its appeal is the low entry barrier for anyone who already knows CSS. You work with familiar selectors, custom properties and functions, then add the component's own looping and randomness to produce many variations from a few lines. The same syntax can also be used to write SVG, and there are experimental directions such as a small DSL that compiles to a shader, a shape generator based on equations, and terminal rendering.
Where it fits
- Decorative page elements: animated headers, section dividers, card backgrounds and loading visuals that would otherwise need image assets.
- Generative art sketches: quick experiments with grids, repetition, colour variation and seeded randomness.
- Teaching and demos: showing how CSS values, transforms and custom properties combine into something visual.
- Icon and pattern work: building repeatable geometric marks where a full illustration tool would be overkill.
Trade-offs to weigh
It is a creative coding tool rather than a general layout framework. Because output is generated at runtime, complex doodles can add rendering cost on low-powered devices, and the result may be hard to inspect compared with ordinary DOM elements. Randomness is useful for variety but awkward when you need an identical result every time, so check how seeds or fixed values behave before relying on it in production. Accessibility also needs care: purely decorative canvases should be hidden from assistive technology, and any meaningful graphic needs a text alternative.
A practical next step
Pick one small place on a page — a hero background or a section divider — and rebuild it as a doodle with a fixed seed. Compare the file size and render cost against the image or CSS you are replacing. If you enjoy the workflow, MDN Web Docs is a good companion for the underlying CSS features, and CodePen is a common place to try and share small generative sketches.
How do I add css-doodle to my webpage?
You add css-doodle by loading its script once, then placing a <css-doodle> element in your HTML and writing CSS-like drawing rules inside it. The component renders into a canvas-like grid of cells; you style those cells with CSS properties (background, transform, clip-path) and the component handles the repetition.
A minimal pattern
<script src="https://css-doodle.com/lib/css-doodle.min.js"></script>
<css-doodle>
:doodle {
@grid: 8 / 300px;
background: #111;
}
background: hsl(@rand(360), 70%, 60%);
transform: rotate(@rand(360deg));
</css-doodle>
The :doodle block configures the whole element — grid size and dimensions. Rules outside it apply to every cell, so @rand() gives each cell its own value.
How to choose your setup
- Just trying it out: keep the script tag in the page and edit the element directly. Fastest feedback.
- Real project: install it from npm and import it in your bundle, so you control the version and don't depend on a third-party CDN at runtime.
- Many doodles on one page: load the script once near the end of the body; each
<css-doodle>element is independent.
Practical notes
- Place the script before the elements you want to render, or accept that they appear once the script loads.
- The element is a custom element, so older browsers need a custom-elements polyfill if you must support them.
- Generative output is random by default. If you want a stable image, fix the seed so the pattern doesn't change on each reload.
- Keep the grid modest while iterating; large grids with heavy per-cell transforms are the usual cause of jank.
Next step: build one doodle with @grid: 5 / 200px and a single randomized property, then add a second property and watch how the composition changes. For syntax beyond the basics — SVG output, shape equations, and terminal rendering — see css-doodle.
Can css-doodle create animated generative art?
Yes. css-doodle is built for exactly that kind of work: it's a web component that treats CSS as an artistic language, and because CSS animations and transitions are part of that language, you can build generative art that moves rather than a static pattern.
The practical route is to write your generative rules inside the component and drive them with CSS animation — rotating, translating, scaling or changing color across a grid of generated shapes. The page also describes a tiny DSL that compiles to a shader, plus a shape generator from equations, so motion can come from computed geometry rather than only from hand-keyed transforms.
What it suits
- Animated backgrounds and decorative headers where you want something procedural but still lightweight.
- Generative pattern studies, tile systems and handcrafted icons that need to shift over time.
- Creative-coding sketches that live in the browser, including rendering from the terminal if you prefer that workflow.
Trade-offs to weigh
- You are writing in a CSS-like syntax, which is a strength for designers but a constraint if you want full control over frame timing or physics.
- Shader-based effects can be visually rich but harder to reason about and heavier to run than simple transforms.
- Complex animated grids can tax low-powered devices, so test on the hardware your audience actually uses.
A useful first step: pick one simple shape, tile it across a grid, then animate a single property such as rotation or hue and watch how the whole composition changes. If you want a broader survey of what the CSS art community builds, CodePen is a common place to see related sketches in context.
How does css-doodle generate shapes from equations?
css-doodle generates shapes from equations by turning a mathematical expression into a CSS-doodle drawing primitive rather than a bitmap. You write a formula in the component's CSS-like syntax, and the equation's outputs determine the geometry — typically by sampling values across a coordinate grid to produce a path, curve or filled region. The "shape generator from equations" heading on css-doodle points to this as a distinct capability alongside its pattern, icon and SVG-style drawing modes.
In practice, that means you describe the rule that defines a shape (for example, a relationship between x and y, or a parametric expression using an angle) and let the component evaluate it repeatedly. Each evaluation gives a point or a value that the renderer turns into visible geometry. Because the output is CSS/SVG-like rather than a fixed image, the result scales cleanly and can be animated or made interactive through normal web techniques.
Where it fits
- Generative backgrounds and decorative art where you want variety without hand-drawing each element.
- Creative-coding sketches and teaching demos, since equations map directly onto visible form.
- Icons or motifs that need to be parameterized rather than fixed.
Trade-offs to weigh
| Approach | Strength | Cost |
|---|---|---|
| Equation-driven shapes | Compact rule, easy to vary parameters | Requires comfort with math notation and the DSL |
| Hand-authored SVG paths | Precise, predictable output | Verbose, harder to randomize |
| Raster art tools | Fine visual control | Not resolution-independent, awkward in code |
A useful next step: start with one simple equation you already know — a circle, sine wave or spiral — express it in css-doodle's syntax, then change a single constant and watch the shape shift. That single-variable experiment tells you quickly whether equation-based generation matches how you like to work, or whether the SVG-style syntax or pattern modes on the same site suit your project better.
Is css-doodle free to use and how can I support it?
Yes. css-doodle is free to use — it's an open-source web component you can drop into a page to draw generative patterns, backgrounds, icons and decorations with CSS-like syntax. The site presents it as a creative-coding tool rather than a paid product, and the only money-related element on the page is a "Donate" link, so there is no license fee or subscription to worry about.
How support typically works for a project like this
- Donate. The page itself offers a Donate option; that's the most direct way to fund ongoing work.
- Use it and credit it. Building something with css-doodle and sharing it helps the project's visibility.
- Share what you make. The site explicitly invites you to share your creations, which feeds examples and inspiration back to other users.
- Report issues and improve docs. Bug reports, browser-compatibility notes and clearer examples are valuable non-financial contributions.
- Contribute code or examples. If you're comfortable with the codebase, patches and demo snippets extend what the tool can do.
Who this suits
| Your situation | Practical take |
|---|---|
| Hobbyist making backgrounds or art | Free to start; donate if it becomes part of your regular toolkit |
| Developer adding decorative visuals to a site | No cost barrier; check the licence terms before shipping commercially |
| Educator teaching CSS or creative coding | Free for classroom use; sharing student output supports the project |
| Team needing guaranteed support | Donation isn't a support contract — plan for self-support |
Next step: open the site's "Getting started" section, build one small pattern, and if it earns a place in your workflow, use the Donate link. If you need commercial clarity, read the licence in the repository before you ship — that's the detail worth confirming rather than assuming.
What are some examples of art made with css-doodle?
The site doesn't publish a gallery of named artworks, so the honest answer is: it shows categories of art you can make, not a curated showcase. From the page itself, css-doodle describes work in these buckets:
- Graphic patterns and visual backgrounds
- Handcrafted icons
- Generative decorations
- SVG drawn with a CSS-like syntax
- A tiny DSL that compiles to a shader
- Shapes generated from equations
- Rendering from the terminal
What that looks like in practice
A "graphic pattern" here usually means a tiled field of shapes whose position, rotation, color or size shift cell by cell — the kind of background that looks hand-drawn but is one short rule repeated. "Generative decorations" tend to be the ambient kind: drifting dots, orbiting rings, noise-driven textures placed behind content. The shader and equation routes push further, producing smooth gradients, warped grids and organic blobs that plain CSS gradients can't reach.
A concrete reader scenario
Say you're building a landing page and want a header that feels custom rather than stock. You'd write a doodle that fills a grid with circles, vary the radius by cell index, and animate a slow rotation. That's a background, an icon set, or a decorative divider depending only on how you size and place it.
How to judge which approach fits
| Goal | Likely route | Trade-off |
|---|---|---|
| Tiled background or texture | Pattern rules | Cheap to render, easy to tune |
| Logo or icon | SVG with CSS-like syntax | Precise control, more manual |
| Fluid, painterly motion | Shader DSL | Most striking, steepest learning curve |
| Mathematical shapes | Equation-based generator | Elegant results, needs comfort with formulas |
Next step
Open the site's getting-started material, copy the smallest example, and change one number at a time — cell count, then color, then rotation. Watching a single value ripple across the grid is the fastest way to understand what the tool is doing. For broader context on generative art in the browser, MDN Web Docs covers the underlying CSS and canvas concepts, and CodePen is a common place people share doodle experiments.
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