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Dev tools · April 13, 2026

showmd

Markdown was never meant to be previewed plain text

showmd launched on April 13, 2026 with 204 votes, #139 of 21,248 launches that month and more than 99% of that year's launches.

What it does

Ever asked yourself why all of those SKILL.md files are rendered in plain text in MacOS Preview? showmd is a free, native macOS Quick Look extension that renders Markdown beautifully. YAML frontmatter parsed into a collapsible metadata table — collapsed by default, one click to expand. No other viewer does this. Agentic AI XML tags — and 17 more — rendered as labeled, bordered blocks instead of raw angle brackets.

showmd is a free, native macOS Quick Look extension that renders Markdown beautifully. YAML frontmatter as a collapsible table, rendered and source toggle, dark mode. No account, no cloud.

This file configures how the AI agent behaves in this repo. Read carefully before running any automated task or deploying to production. Press Space on a .md file and macOS dumps the raw source — hashes, asterisks, dashes and all. Unreadable. AGENTS.md, CLAUDE.md, .cursorrules — full of XML tags, alerts, and structured prompts. Every viewer renders them as garbled angle brackets. Mermaid flowcharts and LaTeX equations are just raw text in every other previewer. You have to open a browser to see what they actually look like. YAML frontmatter parsed into a collapsible metadata table — collapsed by default, one click to expand. No other viewer does this. Agentic AI XML tags — <example> ,…from showmd.yetanother.one

Does a similar job

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  • GlanceMay 2026 · glance.md · ▲81

    Preview .md files instantly with quick look

  • Write.md – A free, open-source, themeable Markdown editor for macOSAug 2026 · writemd.app · ▲107

    A free, open-source Markdown editor for macOS with customizable appearance profiles, optional Vim keys, and local writing corrections.

  • Marked QLJul 2026 · markedapp.com · ▲159

    Instant markdown previews in Finder

  • .MD This PageApr 2026 · github.com · ▲112

    Convert any page to clean Markdown instantly

  • Write.md2020 · ▲137

    Sharable, distraction free markdown editor.

  • Markdown Viewer and EditorAug 2026 · kingsbridge-consultancy.com · ▲34

    Free markdown viewer and editor that runs entirely in your browser. Drag & drop a .md file to read it beautifully rendered, edit it, and save it back — nothing is ever uploaded.

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