Convert HTML to Markdown
Convert an HTML into a Markdown right here on the page. Markdown is the usual choice for README files and technical documentation in code repositories. Worth knowing: a Markdown will not open in a browser tab, so it is a file for software rather than for the web. Your file never leaves your computer.
Need the other direction? Convert Markdown to HTML
How to convert HTML to Markdown
- 1 Drop your HTML .html or .htm file onto the page, or click to browse for it.
- 2 Check the options. Nothing is thrown away on the way to Markdown, so there is no quality dial to set.
- 3 Convert. The work happens on your own machine, so how long it takes depends on your computer and the file.
- 4 Download the Markdown, or add more files and do the whole set in one go.
Why convert HTML to Markdown
- Readable and editable as plain text with no special software.
- Diffs cleanly in version control, unlike binary document formats.
- Notes and knowledge bases in tools like Obsidian and Notion.
- HTML: a single file often references external images, styles and scripts.
HTML compared with Markdown
How the two formats differ on the things that decide whether a conversion is worth making.
| Property | HTML | Markdown |
|---|---|---|
| File extension | .html | .md |
| Colour depth | UTF-8 markup rendered through the CSS box model | UTF-8 plain text, parsed to an HTML document tree |
| Browser support | Every browser | No browser support |
| Introduced | 1993 | 2004 |
| Developed by | Tim Berners-Lee, now WHATWG | John Gruber and Aaron Swartz |
Quality and what changes
Both sides are lossless, so every pixel survives the trip intact and converting back returns the same image. What changes is the size and what the file can carry: Markdown stores the data without compression, so expect a much larger file.
- Browsers will not display a Markdown, so it downloads rather than opening in a tab.
- One Markdown limitation to keep in mind: anything beyond basic structure means falling back to raw HTML.
Questions about HTML to Markdown
Can I open a Markdown in a browser?
No. No mainstream browser renders Markdown natively, so it will download rather than display. That is fine when the file is heading into desktop software or an archive, and a problem if it is going on a web page.
Is my HTML file uploaded anywhere?
No. The whole thing runs inside the browser tab you already have open. Your HTML is read straight from your own disk, converted on your machine and handed back as a Markdown. Nothing is sent anywhere, nothing is stored and there is no account.
Is there a file size limit?
There is no server-side limit because no server sees the file. The real ceiling is your device memory, since the input and the output both have to fit in the tab. A few hundred megabytes is usually fine on a desktop machine and considerably less on a phone.
Can I convert several HTML files at once?
Yes. Add as many as you like and they are processed one after another, then offered as separate Markdown downloads or as a single ZIP. Speed depends on your own processor rather than on a queue.
Does the converter work offline?
Yes, after the page has loaded once. The engine is cached by the browser, so you can disconnect, reload and keep converting. That falls out of doing the work locally rather than being a separate mode you switch on.