Markdown to HTML Converter
FileFlip converts Markdown to HTML entirely inside your browser, using Pandoc compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert an Markdown file to HTML?#
- Drop your Markdown file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to HTML and the conversion starts on its own. FileFlip downloads 65.8 MB of WebAssembly the first time and nothing after that, then runs Pandoc on your own machine.
- Save the HTML file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting Markdown to HTML lose quality?#
Not in the sense of pixels or samples. Converting Markdown to HTML rebuilds the file in HTML's own model rather than re-encoding it, so everything HTML can represent comes through exactly and anything it cannot has to be dropped. Expect the words to come through exactly and the page breaks to move.
Is it safe to convert Markdown files online?#
Yes, because nothing is uploaded. FileFlip converts Markdown files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What Markdown to HTML actually does to the file#
Converting Markdown to HTML runs on Pandoc, downloads 65.8 MB of WebAssembly the first time and nothing after that, rebuilds the file in the target's own model, keeps selectable text and page layout.
| Engine | Pandoc |
|---|---|
| Conversion path | One step: Markdown → HTML |
| Downloaded to your browser | 65.8 MB, once, then cached by your browser |
| Quality | Rebuilt in the target's model |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| Selectable text | Kept | Carried through into the converted file. |
| Page layout | Kept | Carried through into the converted file. |
What is an Markdown file?#
An MD file holds Markdown, John Gruber's 2004 plain-text markup that uses light punctuation such as # and * for structure and converts to HTML, while still reading cleanly as unformatted text on its own.
Write in Markdown when the document is prose with light structure that will be read as either rendered HTML or plain text, like a README or a blog post.
Convert Markdown to a heavier format when the document needs something Markdown was never designed for, such as page layout, citations, or a footnote style a specific target requires.
What is an HTML file?#
An HTML file is a plain-text document of tagged markup describing headings, paragraphs, links, tables and images, meant to reflow to fit whatever browser or screen renders it.
Use HTML when a document needs to reflow in a browser or serve as a structured intermediate step between other document formats.
Convert HTML to PDF when the page needs to keep one fixed layout for printing or archiving, or convert it to DOCX to keep editing it in a word processor.
Markdown to HTML questions people ask#
Who invented Markdown and why?
John Gruber created Markdown in 2004 as a text-to-HTML tool for web writers, with Aaron Swartz acting as an early sounding board. The goal was a plain-text syntax that stayed readable even before conversion, so a Markdown file never looks like it's covered in tags the way raw HTML does.
Why does GitHub render my Markdown differently than another tool?
GitHub uses GitHub Flavored Markdown, which adds tables, strikethrough, task lists and automatic link detection on top of CommonMark. A file relying on those extensions, or on a different dialect's footnotes or raw HTML handling, can render correctly on GitHub and differently, or not at all, in an editor or site generator using a different Markdown implementation.
Why do Markdown tables look broken when I paste them somewhere else?
Tables were never part of Markdown's original 2004 specification, so every tool that added them, GitHub Flavored Markdown, MultiMarkdown, Pandoc, invented its own pipe-and-dash syntax independently. A table written for one renderer often shows up as literal text or breaks its alignment in another.
What is CommonMark and how is it different from Markdown?
CommonMark is a 2014 specification, backed by John MacFarlane of Pandoc along with engineers from GitHub, Reddit and Stack Overflow, that defines Markdown's grammar unambiguously with a full test suite. It exists because Gruber's original description left enough edge cases undefined that independent Markdown parsers had drifted apart; CommonMark is the fix, not a replacement syntax.