MD Editor: a Markdown workspace whose documents stay on your device

Most note and document apps ask for an account, syncing and a server, and many come with a busy interface. That is too heavy for someone who just wants to write and see the Markdown result.

The goal was a calm writing space that needs no account, keeps data on the device, opens fast and works well from the keyboard.

The document library, editor and preview sit on one screen. Documents and settings live only in the browser's local storage, and export produces a .md file.

• A document library: create, rename, duplicate, delete with undo, search, import and export
• A selection-aware formatting bar and shortcuts such as Ctrl/⌘ + B, I and K
• A live preview with GFM tables, task lists and code highlighting; raw HTML is deliberately not run
• An outline menu that lists headings and moves the editor and preview to the one you pick
• Light, dark and system themes; text size, line height, font, line numbers and focus mode
• Yaz and Önizleme tabs and a document drawer on phones

The app is live and sends documents to no server. I fixed the phone layout and added the outline, duplicate and undo-delete features; every feature is protected by end-to-end tests.

• 58 end-to-end and 26 unit tests
• Raw HTML and scripts do not run in the preview
• A single-pane phone layout with no sideways scroll