Markdown to HTML
Convert GitHub-flavoured Markdown into inspectable HTML text.
Runs in your browser. Nothing is uploaded.
Turn readable Markdown into copyable HTML
Markdown to HTML converts a Markdown document into HTML text that you can copy into a template, a documentation system, or a test fixture. Paste source into the left editor, choose Sample to see a working document, then press Convert. The result is kept as text in the output area. It is not rendered as a live preview, so the generated markup is easy to inspect before it reaches another system.
The converter uses GitHub-flavoured Markdown features through the marked library. Headings, paragraphs, emphasis, strong text, links, ordered and unordered lists, block quotes, fenced code blocks, and GFM tables are useful for common README and issue content. Language names on fenced code blocks are carried into a class on the HTML code element.
What this converter is designed to do
This page is a focused converter, not a full Markdown editor. It does not provide a collaborative document, a publishing workflow, or a server-side preview. The output is a practical starting point that you can paste into an application and then adjust for that application's HTML conventions. Raw HTML already present in Markdown can be carried through as HTML text, so review it when the source comes from someone else.
Markdown syntax has edge cases. A list can change meaning when indentation is inconsistent, a table needs a separator row, and a link destination may contain characters that need escaping. If the input is not valid or is empty, the tool shows an error instead of leaving an earlier result in place. Use HTML to Markdown to reverse a common document conversion, or HTML Formatter to inspect existing markup.
Review generated HTML before shipping
Generated HTML is data, not a security policy. A converter does not decide whether a link is safe, whether an image should load, or whether a page should allow a script. Sanitize or restrict HTML at the boundary where untrusted content becomes a web page. For documentation, check heading order, link destinations, table headers, and code block classes after conversion. The output can be copied or downloaded as converted.html.
Local processing for private drafts
The Markdown parser runs in the browser. Pasted text and dropped files are processed locally, and nothing is uploaded to TheDevTab. Downloads use a browser object URL and do not create a server copy. You should still avoid sharing the downloaded file carelessly if it contains private notes, internal links, or credentials. For structured data, related tools such as JSON Formatter and JSON to XML keep their own input and output workflows local as well.
FAQ
Does Markdown to HTML send or render my source document?
The marked parser runs in your browser, and pasted text or dropped Markdown files are never uploaded. The generated HTML is shown as text in the output area rather than inserted into the page as rendered content.
Which Markdown features are supported?
The converter uses marked with GitHub-flavoured Markdown enabled, so it handles headings, links, lists, emphasis, fenced code, block quotes, and GFM tables. The result is HTML text that you can copy or download.
Is this a full Markdown editor?
No. It is a focused text converter with input and output areas. It does not provide collaboration, publishing, editing history, or a rendered preview.
Is the output HTML rendered on the page?
No. HTML is kept in a read-only text area so you can inspect and copy the markup without executing it in the page. Download creates converted.html from that output.
Can Markdown include raw HTML?
Yes. marked can carry raw HTML through to the generated HTML text, so review it before publishing untrusted content. Apply the sanitization policy required by the system that will render the result.
Does the converter fetch links or images?
No. marked parses the Markdown text and leaves link or image destinations in the generated HTML without requesting them. The output should still be reviewed for the URL and content policy of the publishing system.