Legal research that looks like legal research.

A web-based document reader, annotation system, and curated practice library with legal-grade typography and a professional research interface. Everything runs in the browser. Nothing is uploaded. Nothing phones home. Ctrl+Shift+K

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Features

Document Reader Import PDFs, EPUBs, and plain text Legal typography — justified serif, section numbering (§), exhibit captioning Three font-size presets, toggleable paragraph numbering Scroll position saved per document Tabbed multi-document workspace	Annotations Highlight text in three colors (yellow, blue, green) Bookmark any passage All annotations saved locally via IndexedDB Organized by document and chapter No account required, no cloud sync
Built-In Library 12 practice guides covering: California contract law & SOW structuring AI governance frameworks CCPA/CPRA compliance (2026 update) NDA drafting with technology carve-outs Vendor agreements & DPAs Incident response planning IP provisions in tech agreements Real statutory citations throughout.	Research Interface Left sidebar: navigable table of contents (auto-generated from headings) Right sidebar: related authorities with type badges (guide, article, case) Keyboard navigation between chapters Full-text search across the library Responsive layout — sidebars collapse gracefully

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Quick Reference Mode

Ctrl+Shift+K instantly switches the entire UI to display a practice guide on SOW structuring. Your previous state is saved and restored when you press the shortcut again.

The status bar indicates when quick-reference mode is active.

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Try It

Live at circuitus.pages.dev

Or run locally:

git clone https://github.com/foolish-bandit/Circuitus.git
cd Circuitus
npm install
npm run dev

No API keys. No backend. No accounts. Opens in your browser.

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Architecture

All data lives client-side.
No server. No uploads. No tracking. No analytics.

Layer	Tech
Frontend	React 19, TypeScript, Tailwind CSS
Build	Vite
Storage	IndexedDB (documents, highlights, bookmarks)
PDF parsing	pdf.js (spatial text extraction, heading detection)
EPUB parsing	JSZip (OPF spine extraction)
Icons	Lucide React

Design: Navy and gold color scheme. Libre Baskerville for document text, sans-serif for interface chrome. Styled to feel like a professional legal research platform.

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Contributing

npm install
npm run dev       # dev server
npm run build     # production build

PRs welcome — especially new practice guides, document format support, and annotation features.

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License

GPL-3.0

_{Built by Zack Brenner}