What is a Markdown viewer?
A Markdown viewer turns plain-text Markdown syntax into a formatted document preview. Markdown uses readable characters such as hash signs for headings, asterisks for emphasis and hyphens for lists. This tool places the source beside a live rendered view, making it easy to write, inspect or troubleshoot an MD file without installing a desktop editor.
The preview supports GitHub-Flavored Markdown features including tables, task lists, strikethrough, fenced code blocks and automatic link syntax. You can switch between split, editor-only and preview-only views depending on whether you are writing, reviewing or presenting the result.
How to preview Markdown online
- Type or paste Markdown into the editor.
- Open a local .md, .markdown or .txt file when you already have content.
- Drag a Markdown file onto the workspace to replace the current document.
- Use Split mode to compare source and output as you edit.
- Choose Preview mode for a clean reading view.
- Copy the sanitized rendered HTML when you need it elsewhere.
The filename, word count and character count update in the toolbar. The example button restores a reference document showing common formatting, while Clear starts an empty file.
Safe, accurate rendering
Markdown can contain embedded HTML. Rendering that HTML without checking it can introduce scripts, unsafe links or unwanted attributes. This viewer parses GitHub-Flavored Markdown and sanitizes the resulting HTML before it is inserted into the page. Normal headings, lists, links, code, blockquotes, tables and images remain available while unsafe markup is removed.
The preview uses its own readable typography and responsive table and code-block handling. It is intended to show document structure clearly; a publishing platform may apply different fonts, spacing or colors to the same Markdown.
Why view Markdown in the browser?
A browser viewer is convenient for README files, documentation, release notes, technical drafts and content destined for static-site generators. Everything runs locally, so private notes and unreleased documentation are not sent to a conversion service. The original file is never changed, and opening another file only replaces the text in the current browser session.