Marked — Markdown Editor

Marked is a Markdown reader and editor designed first as a reading app — think Apple Books for your .md files. Open any Markdown document from Files or iCloud Drive and read it with the calm of a book: classic typography, generous margins, justified text with automatic hyphenation, and Light, Sepia and Dark themes.

A READING-FIRST EXPERIENCE
• Three reading themes: Light, Sepia and Dark.
• Nine curated typefaces: system serif, New York, Georgia, Palatino, Times New Roman, Helvetica Neue, Avenir Next, Iowan Old Style and Charter.
• Adjustable font size, line spacing and horizontal margins.
• Justified text with automatic hyphenation for a book-like rhythm.
• Native rendering of headings, lists, quotes, code blocks, links and tables.
• Styled blockquotes with accent bar, soft background tint and a decorative quote glyph.
• Wrap-first tables that fit cell text to the screen and only scroll horizontally when wrapping is not enough.

SYNTAX HIGHLIGHTING
• Fenced code blocks are highlighted with automatic language detection (highlight.js via HighlighterSwift).
• The editor colours Markdown markup live — headings, emphasis, code spans, links and lists — without getting in the way of plain-text editing.

QUICK EDITING
• Built-in plain-text editor with in-place save to the original file.
• New documents open straight into the editor.
• Jump to any line directly from the table of contents or search results.
• Debounced highlighting keeps large files responsive while typing.

NAVIGATION
• Auto-generated table of contents from the document's headings.
• In-document search: per section in reader mode and per line in editor mode.
• Recent files list with per-document reading position and progress, Apple Notes–style file count under the title.

FAST AND SMOOTH
• Documents open asynchronously so the UI never blocks on large files.
• Theme and font changes reuse the parsed document and existing section views instead of rebuilding from scratch.
• Smart subview reuse keeps scrolling fluid in long documents.

WORKS WITH YOUR FILES
• Opens .md, .markdown, .mdown and .mkd files from Files, iCloud Drive and "Open with…".
• Create new Markdown documents from inside the app.
• Security-scoped bookmarks remember where each file lives, so recents keep working after relaunch.

PRIVACY BY DESIGN
• Everything runs on your device. Marked has no servers.
• No accounts, no telemetry, no advertising, no tracking.
• Your files stay exactly where you keep them — the app only opens them.

Ideal for reading notes, technical documentation, project READMEs, long-form articles or books written in Markdown — and for making quick edits without leaving the reading flow.