GOAT LabDesignPlayground: UI component and design workbench
Compare component designs, try their interactions and export standalone examples. Existing CSS generators, color tools, SVG editing and cron utilities remain available.
- Free
- No sign-up
- Works offline
What is DesignPlayground?
A browser-based collection covering forms, navigation, overlays, data displays, charts, authentication, AI interface patterns and mobile layouts. Authentication, payment and AI examples are local demonstrations.
How does it work?
Choose a component and a design style, interact with the isolated preview, then copy its complete HTML/CSS/JavaScript or download an HTML file. Generator tools retain their existing export formats.
When should I use it?
Use it when you need a copy-paste CSS box-shadow, gradient or border-radius, a harmonious color palette with contrast checking, ready UI component styles, a verified cron expression, an edited SVG path, or a FIGlet banner for a README or CLI — all without installing anything.
At a glance
| Component library | Interactive patterns with style selection and standalone HTML export |
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| Generators | box-shadow, gradient, border-radius, color-palette |
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| Color output formats | Hex, RGB, HSL, OKLCH |
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| WCAG levels checked | AA 4.5:1 (normal) / 3:1 (large); AAA 7:1 / 4.5:1 |
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| Palette schemes | Complementary, triadic, tetradic, analogous |
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| Gradient types | linear, radial, conic (sRGB/OKLCH/HSL interpolation) |
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| Cron default / simulation | */5 * * * * (every 5 min); next 10/50/100 runs, exports crontab + K8s CronJob |
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| ASCII banner | FIGlet, 16 fonts (Standard, Big, Slant…), max 20 chars |
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Frequently asked questions
What does the box-shadow generator output?
It builds CSS box-shadow values from offset-x, offset-y, blur-radius, spread-radius and color, supports the inset keyword, and lets you stack multiple comma-separated layers. Copy the result as CSS or Tailwind.
What contrast standard does the color tool use?
WCAG 2.1. It flags whether text passes AA (4.5:1 for normal text, 3:1 for large) and AAA (7:1 / 4.5:1). Palettes are generated via complementary, triadic, tetradic or analogous schemes with Hex, RGB, HSL and OKLCH output.
What is the default cron expression and what does it do?
The cron builder starts with */5 * * * *, which runs every 5 minutes. It explains each of the 5 fields, simulates the next 10, 50 or 100 run times across timezones like UTC and Asia/Tokyo, and exports crontab and Kubernetes CronJob YAML.
Which gradient types are supported?
Linear, radial and conic gradients, with selectable color interpolation in sRGB, OKLCH or HSL. Drag color stops, set the angle, and copy the background value as CSS or Tailwind.
Is my data uploaded anywhere?
No. Every tool is fully static and client-side — all generation and previewing happens in your browser, and nothing is sent to a server.
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