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Render and preview Markdown files in browser with GitHub-flavored formatting and syntax highlighting
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
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| name | preview-markdown |
| description | Render and preview Markdown files in browser with GitHub-flavored formatting and syntax highlighting |
| user-invocable | true |
| commands | ["preview-markdown"] |
GitHub-flavored Markdown viewer that generates beautiful HTML with syntax highlighting and automatic table of contents.
When the user asks to preview a Markdown file, DO NOT build HTML manually. Use the Bash tool to execute this skill's run.sh script:
# Preview a file
./run.sh README.md
# Pipe content
cat docs.md | ./run.sh
The script handles all HTML generation and automatically opens the result in the browser. Do NOT open the file manually to avoid duplicate tabs.
# Preview a Markdown file
/preview-markdown README.md
# Pipe Markdown content (preferred for temporary content)
cat docs.md | /preview-markdown
echo "# Hello\n\nThis is **markdown**" | /preview-markdown
# With custom background color
/preview-markdown article.md --background "#ffffff"
Best Practice: For temporary or generated content, prefer piping over creating temporary files. This avoids cluttering your filesystem and the content is automatically cleaned up.
The script works with sensible defaults but supports these flags for flexibility:
-o, --output PATH - Custom output path--no-browser - Skip browser, output file path onlyUse this skill when the user wants to:
Natural language requests:
.md, .markdownSupports all GitHub Markdown features:
- [x] Completed task
- [ ] Pending task
Full support for:
The skill generates a standalone HTML file at:
.preview-skills/markdown/{filename}.html
The file is self-contained and can be:
$ for inline, $$ for blockThis skill is standalone and includes all dependencies:
lib/templates/To modify the skill:
config.sh for configurationtemplates/scripts/markdown-renderer.js for behaviortemplates/styles/markdown.css for stylingrun.sh to test changes