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convertexa

Markdown → HTML

Markdown to HTML converter

convertexa converts Markdown files to HTML locally in your browser using a dedicated document engine. Nothing is uploaded: the file is read, converted and handed straight back to you as a download.

  • Free, no sign-up
  • Nothing is uploaded
  • Works offline
Quality
Lossless
Runs
In your browser
Max input
25 MB
Status
stable

Drop a file to convert

Everything happens on your device — nothing is uploaded.

or paste with Ctrl+V

How to convert Markdown to HTML

  1. 1 Drop your Markdown file here.
  2. 2 Choose the output format.
  3. 3 Convert and download the result.

About Markdown and HTML

Markdown is converted with a CommonMark-compatible parser.

HTML is rendered in a sandboxed document before printing to PDF.

Markdown files are read by the convertexa engine that ships with this page, so the conversion is identical whether you use this tool or the general converter. The output is produced with the same codec settings for every visitor, which means the same input always produces the same result.

Limitations

  • Raw HTML embedded in the Markdown is preserved but not sanitised beyond standard tag balancing.

Frequently asked questions

How do I convert a Markdown file to HTML?

Add your Markdown file to the box above. convertexa detects the format from the file content, applies the Markdown to HTML conversion and gives you the result to download. The whole operation runs inside your browser.

Are my Markdown files uploaded anywhere?

No. The conversion runs in a sandboxed worker on your own device. Your file never leaves the browser, and nothing is stored on a server.

Is the Markdown to HTML conversion lossless?

Yes. This conversion preserves all of the source data, so the HTML file is equivalent to the original Markdown file.

Is there a size limit?

For reliable results keep the input under 25 MB. Very large files run out of memory in the browser rather than failing quietly.

Which browsers are supported?

Any current version of Chrome, Edge, Firefox or Safari on a desktop. The conversion engines need WebAssembly and Web Workers, both of which are standard since 2018.