Every generator a web developer needs
CSS, HTML, meta tags and structured data - all visual, all with live previews, all free. Build it, see it, copy the code.
Visual CSS Generator
35 tools - glassmorphism, gradients, shadows, buttons, nav bars, cards, animations and more. Every value is editable.
HTML Generator
Accessible markup for forms, media and content - inputs, selects, tables, video, iframes - rendered live as you build.
Meta & SEO Generator
Meta tags, Open Graph and Twitter cards with live Google result and social card previews. Plus robots.txt.
Structured Data
Schema.org JSON-LD for FAQ, Article, Product, Local Business, Events and more - with rich-result previews.
Clean Media Downloader
Paste a TikTok, Instagram, X or Reddit link and save the video or audio, with no redirects.
API & Webhook Tester
Send HTTP requests without CORS trouble, and capture webhooks on a disposable URL to see exactly what arrived.
Why builders use DevKit
Live preview on everything
See the result as you change it - not just a wall of code. Even the SEO tools show real Google and social card mockups.
Every value is yours
No hardcoded magnitudes. Drag a slider or type any number you want, even beyond the slider's range.
Nothing leaves your browser
The tools run on your own machine, so nothing you build is uploaded anywhere.
Why use a tool when you could just ask an AI
Because the two are better together. These are for the part a chat window is bad at: giving you the exact value, showing you the result, and working on your own files.
Hand the AI an exact value, not a word
Ask for grey and you get its idea of grey, a shade or two off, and you go round again. Pick the colour here, copy #64748b, and say use this. The same goes for a shadow, an easing curve or a gradient stop: the tool turns what you can see into a value you can paste.
Colour paletteSee it before it reaches your project
Generated code has to be run before you know whether it looks right. Here you drag a slider and the result changes under your hand, so you settle on it first and paste it once.
CSS generatorsSome answers need your actual file
No model can open your PDF, weigh your image or read your domain's DNS. Counting the pages, measuring the contrast ratio or following an SPF chain is work done on the real thing, and that is what these tools do.
Website health checkChanging your mind costs nothing
Every adjustment through a chat is another prompt, another wait and another slice of your quota. Here it is another drag. Try twenty variations of a button if you want to.
Button generator