Free tool, no login

Markdown Viewer

Open and read any Markdown file. Paste it or drop it in, and it renders as you type. Nothing is uploaded.

Free, no login, no email. Nothing stored beyond a 24 hour cache. Markdown copy

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Preview

The rendered document appears here as you type.

This tool runs entirely in your browser. Your document is never uploaded, never logged, and never leaves this tab. You can disconnect from the network and it still works.

How it works

  1. 1

    Paste or drop

    Paste Markdown into the left panel, or drop a .md file anywhere on it.

  2. 2

    It renders as you type

    The preview updates on every keystroke, with tables, fenced code, and nested lists laid out properly.

  3. 3

    Nothing is sent anywhere

    Parsing and rendering both happen in your browser. There is no upload step because there is no server to upload to.

Why this matters

Why most online Markdown viewers upload your file

Because it is easier. Rendering Markdown on a server means one code path and a mature library. It also means your document sits in someone's request log, and for a draft contract, an unreleased changelog, or a postmortem with customer names in it, that is a worse trade than most people realise they are making.

This tool parses and renders in your browser instead. There is no API route behind it and no network request that carries the document, so the privacy claim is a property of the architecture rather than a promise in a policy. Disconnect from the network and it still works.

The security problem nobody mentions

A Markdown document can contain a link pointing at a script, and a viewer that renders it as a normal link will happily run that script in your session the moment you click. The usual defence is to render to HTML and then sanitise, which works until the sanitiser config drifts.

This one never produces HTML. The parser emits a token tree and the renderer turns those tokens into React elements, so every piece of your document reaches the page as escaped text. Links are separately limited to http, https, mailto, and anchors. An unsafe link renders as plain text rather than something you can click.

Reading Markdown is becoming the normal case

Markdown used to be a thing you wrote and then converted. It is now the format AI tools read, write, and hand back: model output, agent transcripts, generated documentation, the .md copies sites publish for answer engines. More of it arrives than gets authored, and a fast way to read a file you did not write is worth more than another editor.

Common questions

Click Open a .md file, or drag the file onto the panel. It is read by your browser and rendered on the spot. You can also paste Markdown straight into the left panel.

Markdown is how you talk to machines now

Superflow agents watch every page of every site you ship, and tell you when the thing an AI reads stops matching the thing you published.

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