Quick Markdown Viewer

Read local Markdown folders, inspect JSON/JSONC/NDJSON, search docs, jump with outlines, render Mermaid, preview media, inspect CSV/TSV, and print.

Quick Markdown Viewer is a local-first reader for Markdown folders, documentation packets, CSV/TSV tables, and media-rich notes on Mac, iPhone, and iPad.

Open a folder of files you already have, or open a public GitHub repository URL when you need to inspect remote docs. The app keeps reading fast and direct: no account, no subscription, no in-app purchase, and no tracking layer.

Features:

• Open local folders and browse Markdown, CSV, and TSV files in a file sidebar
• Open JSON, JSONC, NDJSON, and JSONL files with collapsible structured rows
• Read JSON-family fenced code blocks inside Markdown without switching apps
• Expand and collapse folders, filter large file trees, and use keyboard navigation on macOS
• Search the current document with Command-F or all open documents with Command-Shift-F
• Click search results in the sidebar to jump to matches highlighted in the document
• Read Markdown with native rendering for headings, lists, tables, code blocks, links, images, GIFs, and local video
• Render Mermaid diagrams natively, then zoom and pan diagram previews
• Detach Mermaid diagram previews into resizable macOS windows
• Open a document outline, jump to headings, and track the current section while reading
• Open CSV and TSV files as native tables with controls for wrapping and sizing
• Preview linked media without converting your Markdown files
• Print the current document or assemble a cancellable background Print All packet
• Preview Markdown from Finder with the macOS Quick Look extension
• Install the optional qmv command-line launcher on macOS and open supported files directly from Terminal
• Open public GitHub repository and repository tree URLs, including branch and tag paths
• Hide dependency and vendor folders with editable ignore patterns per window
• Navigate between files with back and forward history
• Adjust viewer font size for comfortable reading

Quick Markdown Viewer is designed to stay lightweight and direct:

• no account required
• no subscription
• no in-app purchase
• no tracking
• no web view renderer