Do I need an app to open a .md file?

No. A .md file is plain text, so any editor will open it, the syntax is what makes it unpleasant to read that way. Drop the file here and it is rendered in the page you already have open, with the copy on disk left exactly as it was.

Does it open .txt files?

Yes. A .txt or .mdtext file is read as Markdown, as is a file with no extension at all.

Markdown Viewer

No upload · runs in your browser

Drop a Markdown file hereor click to browse. .md, .markdown, .mdx, read on your deviceSelect .md file No upload · processed locally · auto-deleted

The file is read in your browser with the File API , it is never uploaded.

How it works

Markdown Viewer: Open a .md File and Read It Rendered

Open a .md file straight from your computer and read it the way it was meant to look, headings, tables, code blocks and checklists, with an outline to jump around a long document.

What this does

Open several .md, .markdown or .mdx files at once and switch between them with one click
Contents outline built from the h1 to h3 headings, so a long spec stays navigable
A rendered view and a raw source view, either of them copyable
Download a standalone HTML file that carries its own stylesheet and dark-mode palette
Print from a detached frame, so none of this page's chrome ends up on the paper
Send the file straight to the Markdown to PDF converter without opening it twice
Reads files up to 8 MB and refuses one that turns out to be binary behind a text extension

FAQ

CommonMark essentials plus the GitHub additions people actually use: pipe tables with column alignment, task lists written as - [ ] and - [x], strikethrough with double tildes, and fenced code carrying a language tag. Raw HTML in the file is escaped and shown as text rather than executed. Not parsed: footnotes, reference-style links, definition lists, and Setext headings underlined with = or -. One thing to expect with images, a relative path resolves against this page's address rather than the folder your file came from, so only an absolute image URL will load.

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