Built in the open

Tech Stack

CoreNotes is a static web application. No servers, no databases, no vendor lock-in. Here's exactly what's under the hood.

Static Site

Eleventy v3

ESM static site generator. Nunjucks templates. Zero client-side JavaScript overhead.

Pagefind

Static full-text search. Runs entirely in the browser. No server needed.

RSS / Atom Feed

Auto-generated feed of Learn articles via eleventy-plugin-rss.

markdown-it + anchors

Markdown rendering with deep-linkable headings on all learn articles.

TypeScript 5

Strict mode throughout. No any in shipped code. Bundled by Vite 5.

Dexie 4 / IndexedDB

All notes, notebooks, vocab, and schedule data stored locally in your browser.

Service Worker

Network-first for code, cache-first for assets, with an offline fallback page. The app and the main site pages work offline after the first visit.

Web Crypto API

Used for UUID generation (crypto.randomUUID()). No external crypto libraries.

Cloudflare Pages

Global CDN hosting. Deploys from git. Zero cold-start latency.

D1 + R2 (future)

Cloudflare's SQLite and object storage — reserved for an optional sync layer. Not active today.

Bunny Fonts

GDPR-compliant font host. No tracking cookies, no IP logging. Used on both this site and the app; everything else is served from our own domain.

CSS Custom Properties

Full --cn-* token system. 6 themes, 5 font options, live-switchable without a page reload.

WCAG 2.2 AA

Focus traps on all dialogs, skip links, landmark regions, 44px touch targets, forced-colors support.

Zero Telemetry

No analytics, no error reporting, no tracking of any kind — in the app or on this site. Check the Network tab and see for yourself.

CoreNotes runs all five Rs — not just the two columns. Free to use, nothing to install, and it keeps working when the wifi does not.