TextCove

Ownership: Originally created by 2nul, who no longer wishes to continue development. Ownership has been transferred to hmkk69.

Formerly known as SimpleJot

A fast, private, offline-ready notepad. Write notes in your browser; they auto-save locally. No accounts, no tracking. Your notes stay on this device until you delete or download them.

Website: https://tc.hmkkk.qzz.io/

Features

• Instant autosave with a visible status (Saving... / Saved at 12:03 / error states)
• Multiple notes with search (title + content), sort (last edited / A-Z), pins, snippets and edit dates
• Tags: create, filter, autocomplete suggestions, delete from every note
• Delete moves straight to Trash with click-to-undo in the status bar; Shift-click deletes permanently (with confirm)
• Trash: restore, delete forever, empty, auto-prune after 30 days
• Markdown preview: headings, bold, italic, strikethrough, inline code, fenced code blocks, bullets, ordered lists, task lists, quotes, horizontal rules
• Built-in formatting toolbar and shortcuts (Ctrl+B bold, Ctrl+I italic)
• Hint when your text looks like Markdown, offering to open preview
• One-click .txt download, full JSON export/import, drag-and-drop import
• Oversized note guard: notes over ~1 MB are not auto-loaded; offer "Download backup" then "Clear this note"
• Copy-to-clipboard and print stylesheet (prints the note title)
• Keyboard shortcuts: Ctrl+S save, Ctrl+N new note, Ctrl+K search, Tab indent
• Offline-first PWA: installable, custom icons, app shortcuts, auto-updating service worker
• Theming: manual light/dark toggle (defaults to light), deep-slate dark mode, follows OS when unset
• Accessible: labelled controls, native <dialog> with focus restore and Tab trap, live-region save status, prefers-reduced-motion
• Storage: IndexedDB primary with localStorage fallback + crash recovery; OPFS background backup; storage usage shown in footer
• Safety: sanitized file names, reserved-name protection, quota handling, import caps (5 MB file, 200 notes)

Keyboard shortcuts

Keys	Action
Ctrl/Cmd + S	Download current note as .txt
Ctrl/Cmd + N	New note
Ctrl/Cmd + K	Search notes
Ctrl/Cmd + B	Bold (Markdown)
Ctrl/Cmd + I	Italic (Markdown)
Tab (in editor)	Indent two spaces
Esc	Close menus / dialogs

Technology stack

• HTML5, CSS3, vanilla JavaScript - zero runtime dependencies
• IndexedDB for notes, localStorage for settings and crash recovery, OPFS for background backup
• Native <dialog>, native a[download] + Blob URLs, hand-written word counter
• IBM Plex Mono for readability

File structure

textcove/
|-- index.html          # App shell, SEO tags, native dialog, SVG icons
|-- 404.html            # Not-found page
|-- app.css             # Styling, responsive, print, reduced-motion
|-- app.js              # Application logic, no dependencies
|-- boot.js             # Service-worker registration, theme, dev reload
|-- sw.js               # Service worker (cache name stamped by npm run build)
|-- manifest.webmanifest# PWA manifest with icons, screenshots, shortcuts
|-- assets/             # Icons, screenshots, webfont
|-- robots.txt
|-- sitemap.xml
|-- CHANGELOG.md        # Release history, newest first
|-- package.json        # build / test / check scripts
|-- scripts/
|   |-- build.mjs       # Stamps a content hash into sw.js
|   `-- serve-local.mjs # Dev server used by npm run dev
`-- tests/              # node:test suites (no extra dependencies)

Development

npm run dev     # serve locally at http://localhost:6969 (required: SW and PWA need HTTP, not file://)
npm run build   # stamp a content hash into the service-worker cache name
npm test        # run the test suites
npm run check   # syntax-check the JavaScript

Notes:

• npm run dev must use HTTP; service workers and PWA install do not work over file://.
• Run npm run build after touching any hashed file, before commit/deploy, or CI (git diff --exit-code sw.js) fails.
• Root serve-local.mjs is legacy and gitignored; use scripts/serve-local.mjs.

Privacy

TextCove runs entirely in your browser. Notes are stored locally (IndexedDB + localStorage recovery). No accounts, no analytics, no network requests except loading the page and its assets. Export/backup is manual (JSON or .txt).

Credits

Based on the original TextPad project by Paulo Nunes. The previously vendored FileSaver.js, Smoke.js and Countable.js helpers were replaced with small native implementations.

License

TextCove Non-Commercial Attribution License