document Format

HTML File Format

HyperText Markup Language is the foundation of the World Wide Web. It describes the structural semantics of web pages using elements, attributes, and embedded styling.

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Technical Specifications

Extensions	.html, .htm
MIME Types	text/html
Category	Document
Engine Tier	tier1-small-js
Magic Bytes / Sniffing	Container sniffing (ZIP / OLE2 / RIFF header inspection)
Opens With	Any web browser, Chrome, Firefox, Safari
Good For	Web publication, responsive documentation, and email templates.
Not Recommended For	Fixed-geometry print publications without custom CSS paged media.

Convert from HTML (4 targets)

HTMLPDF(high)HTMLDOCX(high)HTMLMD(high)HTMLTXT(text-only)

Convert to HTML (5 sources)

MDHTML(exact)DOCXHTML(high)PDFHTML(good)RSTHTML(high)TXTHTML(exact)