designlang is an open-source CLI that crawls any live website with a headless browser and emits its complete design system: W3C DTCG tokens (primitive, semantic, composite), Tailwind config, CSS variables, Figma variables, shadcn/ui theme, plus native emitters for iOS SwiftUI, Android Jetpack Compose, Flutter and WordPress, and a print-ready brand-book PDF. It runs locally and ships an MCP server so Claude Code, Cursor and Windsurf can read live extractions as native tools.

How do I install designlang?

Run `npx designlang ` — no install, no account, no API key. The package is on npm as `designlang` and requires Node.js 20 or later. The full source is on GitHub at github.com/Manavarya09/design-extract under the MIT licence.

How is designlang different from Style Dictionary, Tokens Studio, Subframe, v0 and Builder.io?

Those tools take a Figma file or hand-authored tokens as input. designlang takes a live URL. It reads what your browser actually computes — colours, spacing, typography, motion, shadows, anatomy — directly from the rendered DOM. It outputs strict W3C DTCG with proper primitive / semantic / composite layering, runs a CSS health audit, performs WCAG remediation, and ships multi-platform emitters from one run.

Does designlang work with Claude Code, Cursor and Windsurf?

Yes. designlang ships a stdio MCP server (`designlang mcp`) that exposes extracted tokens, semantic regions, component clusters, CSS health and accessibility remediation as MCP resources and tools. The CLI also auto-generates `.cursor/rules/designlang.mdc`, `.claude/skills/designlang/SKILL.md`, `CLAUDE.md` fragments and `AGENTS.md` so any AI coding agent can read the system natively.

Is designlang free and open source?

Yes. designlang is MIT-licensed and fully open source on GitHub. The CLI is free with no signup. The hosted demo at designlang.app is rate-limited to two extractions per IP per day; the CLI is unlimited.

What output formats does designlang support?

W3C DTCG JSON, Tailwind CSS config, CSS custom properties, Figma Variables JSON, shadcn/ui theme, React / Vue / Svelte theme objects, iOS SwiftUI extensions, Android Compose Theme.kt + colors.xml, Flutter ThemeData, WordPress block theme (theme.json + style.css), agent rules (AGENTS.md, .cursorrules, Claude skills, MCP), motion tokens, typed component anatomy stubs, a brand voice/CTA pack, and a print-ready brand-book PDF with chapter bookmarks and an embedded tokens attachment.

Can I generate a brand-book PDF for any URL?

Yes. `npx designlang brand --pdf` produces a 13-chapter brand-guidelines PDF with chapter page breaks, a running footer, an extracted-primary cover band, and (with `--attach-tokens`) the DTCG tokens JSON embedded as a PDF file attachment.

Does designlang extract motion, hover states and interaction design?

Yes. With the `--interactions` flag designlang captures hover, focus and active states for buttons, links and inputs, and reads all CSS transitions, easing functions and `@keyframes` animations into a motion-tokens DTCG file.

Competitor Watch

Compare your site with up to four others and get a weekly digest.

A watch group holds your site and up to four others. designlang keeps a weekly snapshot of each.

Make a group

Open Competitor Watch and name the group.
Add your site, then up to four competitors, and mark which is yours.
Open the group to see palettes, type, spacing and accessibility side by side.

Good to know

You can keep 3 groups. Each uses one project slot and each site uses a weekly monitor, so your plan’s limits apply.
Each weekly check costs 1 credit. The confirm re-run is free.
A weekly email digest says who changed what, and trend charts show direction over time.
Deleting a group deletes its project.