Question 1

Is Markdown Preview Online free?

Accepted Answer

Yes. It is completely free with no account, sign-up or subscription required.

Question 2

Is my Markdown uploaded to a server?

Accepted Answer

No. Parsing, rendering and both exports run entirely in your browser. Your document is never sent to a server. It is saved only in your browser localStorage so it is still there when you return.

Question 3

Can I export Markdown to PDF?

Accepted Answer

Yes. Click the PDF button for a one-click download. The PDF is generated from the Markdown syntax tree, so the text is real selectable and searchable vector text rather than a screenshot.

Question 4

Can I convert Markdown to a Word document?

Accepted Answer

Yes. The Word button produces a genuine .docx file with native Word headings, tables, lists, hyperlinks and embedded images, not an HTML file renamed to .doc.

Question 5

Does it support Mermaid diagrams and LaTeX math?

Accepted Answer

Yes. Fenced code blocks marked as mermaid render as diagrams, and LaTeX between dollar signs renders as math using KaTeX. Both are included in the PDF and Word exports.

Question 6

Does it work on a phone or tablet?

Accepted Answer

Yes. On narrow screens the layout stacks, with the editor on the top half and the live preview on the bottom half.