A Standalone/GitHub CLI Extension to Preview GitHub Flavored Markdown

In plain words

A command-line tool that extends GitHub's CLI to preview GitHub Flavored Markdown files locally before pushing to repositories. It allows developers to see how markdown will render with GitHub's formatting rules without leaving the terminal. The tool integrates directly with the GitHub CLI workflow, making it useful for anyone writing documentation, README files, or issues who wants to verify formatting accuracy in advance.

written from the facts on this page · September 2026

From the sources

The gh-gfm-preview command starts a local web server that serves the Markdown document. gh gfm-preview renders HTML using yuin/goldmark , extensions, and frontend tricks to provide features and an appearance similar to GitHub's Markdown rendering. This is a hard fork of yusukebe/gh-markdown-preview , which uses the GitHub Markdown API and therefore does not work offline. This repository aims to emulate GitHub's Markdown rendering as closely as possible, but the original project produces a closer match when offline rendering is notfrom github.com

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