GitHub README Viewer & Previewer

Paste any GitHub repository or README link to preview it online with GitHub-style formatting, syntax highlighting, Mermaid diagrams, and KaTeX math.

Preview Any GitHub README

Enter an owner/repo name or paste a public GitHub URL. This GitHub README viewer starts empty and only fetches the repository you choose.

A GitHub README Viewer for Raw Markdown and Live Preview

This free GitHub README viewer turns any public repository README into a clean browser workspace. Paste an owner/repo name or GitHub URL, then switch between the rendered preview, raw Markdown, or a synchronized side-by-side view without signing in or creating an access token.

Repository or README URL
vercel/next.jsPreview READMEPOPULAR REPOSITORIESfacebook/reactvercel/next.js
Raw Markdown + live preview
RAW MARKDOWNLIVE PREVIEW# Next.jsThe React Framework```tsxexport defaultfunction Page() { return <main />}Next.js

Inspect, Compare, and Export a README in One Workspace

The GitHub README viewer keeps the source and rendered result together. Use Split View to compare Markdown with its GitHub-style output, keep long documents aligned with Sync Scroll, then copy the source, download README.md, open the full Markdown Viewer, or expand the workspace to fullscreen.

  • Preview GitHub Flavored Markdown, tables, task lists, and callouts
  • Render highlighted code, Mermaid diagrams, and KaTeX equations
  • Compare raw Markdown and rendered output with synchronized scrolling
  • Copy, download, open in Full Viewer, or inspect in fullscreen
GitHub-style README workspace
owner/projectCopy MDDownloadFull ViewerProject README

GitHub README Viewer Features Built for Developers

Use the GitHub README viewer to render, inspect, compare, copy, and export repository documentation with full GFM support.

True GitHub-Style Rendering

Headings, tables, task lists, and callouts render exactly as they do on github.com for a faithful preview.

Mermaid Vector Diagrams

READMEs with ```mermaid code blocks render inline vector SVG flowcharts, sequence diagrams, and mind maps.

190+ Language Highlighting

Fenced code blocks are syntax-highlighted across JavaScript, Python, Rust, Go, SQL, YAML, and 190+ languages.

LaTeX KaTeX Math Equations

Inline $…$ and display $$…$$ math expressions are rendered with KaTeX for technical and scientific repositories.

DOMPurify HTML Sanitization

Rendered HTML is sanitized with DOMPurify to keep browsing secure with zero server log tracking.

Preview, Raw & Split Views

Move between GitHub-style preview, raw README Markdown, and a wider side-by-side workspace with optional synchronized scrolling.

How to Preview Any GitHub README in 3 Steps

The GitHub README viewer needs no sign-up or access token — inspect public repository documentation instantly.

1

Paste Repository Link

Type owner/repo shorthand (e.g., `facebook/react`) or paste any GitHub URL directly into the input bar.

2

Fetch Raw Markdown

Click "Preview" to fetch raw Markdown directly via public endpoints without needing personal access tokens.

3

Inspect & Export

View rendered GFM, copy raw markdown text, or download the `.md` file for offline reference.

Frequently Asked Questions About GitHub README Viewer

Common questions about using the GitHub README viewer to preview public repository documentation.

How do I preview a GitHub README using this tool?
Type repository shorthand as owner/repo (e.g., facebook/react) or paste any github.com repository, branch, or README URL. Press Preview to fetch and render the raw Markdown with GitHub formatting.
Do I need a GitHub account or personal access token?
No sign-up or token is required. This tool fetches public GitHub repositories via raw Markdown endpoints with zero authentication needed.
Does it render Mermaid diagrams and KaTeX math formulas from the README?
Yes. Mermaid diagrams render as interactive SVG graphics, formulas render with KaTeX, and fenced code blocks are highlighted across 190+ languages.
Can I copy or download the README Markdown text?
Yes. Use the toolbar buttons to copy the raw markdown text, download the README.md file, open it in the full Markdown Viewer, or expand the GitHub README viewer to fullscreen.
What does Sync Scroll do in Split View?
Sync Scroll keeps the raw Markdown pane and rendered README preview at approximately the same reading position. Turn it off from the Split View toolbar when you want to inspect each pane independently.
Which GitHub links can the GitHub README viewer open?
You can enter owner/repository shorthand, a repository URL, a branch or blob URL, or a direct public README link. The viewer resolves common README filenames and follows simple relative README pointer files when needed.

Preview Any GitHub README Now

Scroll back up and paste a repository or README URL into the GitHub README viewer for instant GitHub-style rendering — free, secure, and with no sign-up.