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Expensico

Markdown to HTML Converter

Convert Markdown (including GitHub-flavoured tables and task lists) to clean HTML. Output is sanitised and ready to publish.

Runs in your browser. Your files are processed on your device and are never uploaded.

How to use the Markdown to HTML Converter

  1. Choose or drop your Markdown file.
  2. Adjust the options if needed — the defaults work well for most files.
  3. Select Convert. Conversion happens instantly in your browser.
  4. Preview the result and download your HTML file.

About this Markdown to HTML converter

Turn Markdown READMEs, notes and documentation into HTML you can publish or email. Supports GitHub-flavoured Markdown: tables, task lists, strikethrough and fenced code blocks.

How Markdown to HTML conversion works

  1. Markdown is parsed with the marked library.
  2. The resulting HTML is sanitised with DOMPurify to remove scripts and unsafe attributes.

Conversion quality: Exact. GitHub-flavoured Markdown is converted to sanitised HTML.

When to convert Markdown to HTML

  • Publishing documentation
  • Converting notes into an HTML email or web page

Limitations to be aware of

  • Raw HTML embedded in your Markdown is sanitised; scripts and event handlers are removed.

Markdown vs HTML

Markdown. Markdown is a lightweight plain-text syntax for formatting (headings, lists, links, code). It is used for READMEs, documentation and notes.

HTML. HTML is the markup language of web pages. An HTML file can be opened in any browser and edited with any text editor.

This converter also accepts TXT files as input.

Frequently asked questions

Which Markdown flavour is supported?

CommonMark plus GitHub extensions such as tables, task lists and strikethrough.

Are my files uploaded?

No. This tool reads and processes files directly in your web browser. Nothing is sent to Expensico's servers, and the data is discarded when you close or reload the page.