GOAT LabDesignPlayground: 17 Free Frontend Design Tools
DesignPlayground is a free, fully client-side toolkit of 17 frontend utilities — CSS generators, a color-palette and WCAG contrast checker, a cron builder, an SVG path editor and FIGlet banners. Preview live and copy CSS or Tailwind.
- Free
- No sign-up
- Works offline
What is DesignPlayground?
DesignPlayground is a collection of 17 browser-based frontend tools grouped into 10 component galleries (buttons, cards, inputs, badges, loaders, tooltips, switches, avatars, alerts, progress), 4 generators (box-shadow, gradient, border-radius, color-palette) and 3 tools (SVG path, cron, ASCII banner).
How does it work?
Each tool runs entirely in your browser with no upload. You adjust controls (sliders, color pickers, fields), see a live preview, then copy the result. Generators export plain CSS or Tailwind; the cron tool simulates run times; the palette checks WCAG contrast.
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
| Total tools | 17 (10 component galleries, 4 generators, 3 tools) |
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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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