Markdown Viewer & Preview
Type Markdown on the left and see the rendered HTML live on the right — copy the HTML or print to PDF.
Markdown is a lightweight way to write formatted text — headings, lists, links, tables and code — using plain characters like #, ** and -. Type or paste your Markdown on the left and the rendered HTML appears instantly on the right. Press Copy HTML to grab the generated markup, or Print / Save as PDF to export just the rendered document. Everything runs in your browser — nothing you write is uploaded — and it keeps working offline once loaded. For safety, the raw input is HTML-escaped before any Markdown is applied, so pasted <script> tags show as plain text rather than running, and only http, https, mailto and relative links are allowed.
Frequently Asked Questions
What Markdown syntax is supported?
This viewer supports the common Markdown you use every day: ATX headings from # to ######, bold with ** or __, italic with * or _, inline code with backticks, and fenced code blocks delimited by ``` or ~~~. It renders unordered lists (-, * or +), ordered lists (1., 2., …), blockquotes (>), horizontal rules (---, *** or ___), links [text](url), images , and GitHub-style tables with a header separator row. Paragraphs and single line breaks are handled too. The parser is a compact, self-contained implementation that runs in your browser — no external Markdown library is loaded — so it covers the everyday essentials rather than every edge case of a full CommonMark engine.
How do I export or print to PDF?
Press the Print / Save as PDF button and your browser's print dialog opens. Choose Save as PDF (or Microsoft Print to PDF on Windows) as the destination to get a PDF file, or pick a real printer for paper. A built-in print stylesheet hides the editor, navigation, and everything else so that only the rendered preview appears on the page — you get a clean document without the tool's interface around it. If you would rather keep working in HTML, use the Copy HTML button instead to grab the generated markup and paste it wherever you need it.
Is my content uploaded?
No — the Markdown you type is never uploaded. Everything happens locally in your browser using built-in JavaScript. The Markdown you type is parsed on your own device and rendered straight into the preview — it is never sent to a server, logged, or stored, and there is no account, sign-up, or tracking of what you write. Because the work is local, the tool keeps working offline once the page has loaded, which makes it safe for notes, drafts, README files, or anything you would rather not paste into a random website. Nothing you enter leaves your computer.
Does it support tables and code blocks?
Yes — this viewer supports tables and code blocks. Tables use the standard pipe syntax: a header row, a separator row of dashes (| --- | --- |), then one row per line, and they render as a real HTML table with a styled header. Fenced code blocks are written between triple backticks (```) or triple tildes (~~~); everything inside is treated as literal code, kept monospaced, and never interpreted as Markdown, so symbols and indentation survive intact. Inline code between single backticks is supported as well. Long code lines and wide tables scroll horizontally inside the preview rather than breaking the layout.
Is the HTML output safe?
Yes — the HTML output is safe. Before any Markdown transform runs, the tool escapes the HTML special characters &, <, >, and " in your raw input, so any HTML or <script> tags you paste appear as visible, inert text rather than executing — this prevents cross-site-scripting and HTML injection. Only Markdown-generated tags reach the preview. In addition, links and images are restricted to http, https, mailto, and relative URLs; javascript: and other unexpected URL schemes are dropped, so a crafted [text](javascript:…) link cannot produce a live javascript href. The Copy HTML button gives you exactly this sanitized, generated markup.