Markdown HTML

Markdown to HTML Converter

Convert Markdown to HTML in your browser. Free, private, and fast. Preserve text, structure, and as much formatting as possible without sending files to a ser

Drag & drop your Markdown file here

or

Max file size: 50 MB · Your file stays in your browser

Your file is processed locally in your browser — nothing is ever uploaded.

Why Convert Markdown to HTML?

Converting Markdown to HTML is a common task whenever a file has to work somewhere that expects the other format. Markdown is a lightweight, human-readable plain-text formatting syntax created by John Gruber and Aaron Swartz. HTML is the standard markup language for web content. This converter makes the switch locally in your browser — nothing is uploaded.

Common use cases

  • You have a Markdown file and need it in HTML format.
  • The target software or platform requires HTML but your file is in Markdown.
  • Typical use of HTML: Exporting web content for offline reading.
  • You want to reduce file size or improve compatibility without using desktop software.
Keep in mind: Complex layouts, JavaScript interactions, and external resources (CSS, images) may not translate accurately when converting HTML to other formats.

How to Convert Markdown to HTML

  1. Upload or drop your Markdown file into the converter above.
  2. Adjust any output settings for HTML if needed.
  3. Click Convert and download your converted file instantly.

About the Formats

Markdown (Markdown)

Markdown is a lightweight, human-readable plain-text formatting syntax created by John Gruber and Aaron Swartz. Simple punctuation marks up headings, bold, italics, links, code, and lists — and it converts cleanly to HTML.

Compatibility: Supported by GitHub, VS Code, Notion, Obsidian, Hugo, Jekyll, and virtually all developer tools.

HTML (HyperText Markup Language)

HTML is the standard markup language for web content. HTML files describe the structure of a webpage — headings, paragraphs, links, images, tables — using a hierarchy of elements and tags.

Compatibility: Universal — every browser natively renders HTML.

100% Private & Browser-Based

Your files never leave your device. All conversion happens locally in your browser — nothing is uploaded to any server. No sign-up required.

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Need the reverse?

HTML to Markdown Converter

FAQ

Frequently Asked Questions

Yes — completely free with no sign-up, no watermarks, and no size limits for typical files.

Quality depends on the output settings. For lossless output, choose the highest quality setting available.

Your file is processed entirely within your browser using local JavaScript. It is never uploaded to any server. Only you can access your file.

For browser-based conversion, files up to 50 MB work best. Very large files may take longer depending on your device. We recommend splitting very large files before converting.

Currently, AintoB converts one file at a time to keep the browser-based process simple and private. Reload the page to convert another file.