Is XHTML still used in modern web development?

While HTML5 is the standard, XHTML is still used in systems requiring strict XML compliance or legacy support.

Do browsers treat XHTML differently than HTML?

Yes, if served with the correct XML MIME type, browsers parse it strictly, otherwise it is treated as HTML.

.xhtmlapplication/xhtml+xml

XHTML (.xhtml)

XHTML is a stricter, XML-based version of HTML. Combines the flexibility of HTML with the well-formed rules of XML.

Quick Facts

File Extension: .xhtml
MIME Type: application/xhtml+xml
Category: Document
Full Name: XHTML

What is XHTML?

XHTML, or Extensible HyperText Markup Language, represents a reformulation of HTML 4.01 as an application of XML 1.0. It was designed to bridge the gap between the flexibility of HTML and the strict well-formedness rules of XML. By adhering to XML syntax, XHTML documents are guaranteed to be parsed correctly by XML parsers, ensuring greater consistency across different platforms and devices compared to traditional HTML.

The primary goal of XHTML was to improve the interoperability of web content with other XML-based technologies. Because XHTML documents must be well-formed, errors such as unclosed tags or improperly nested elements are caught early, leading to cleaner code and more reliable rendering. This strictness makes it particularly useful for environments where data integrity and machine readability are paramount.

Although HTML5 has largely superseded XHTML as the standard for modern web development, XHTML remains relevant in specific contexts requiring strict XML compliance. It is often utilized in legacy systems, mobile applications, and scenarios where content needs to be processed by XML tools or integrated into complex document workflows. Understanding XHTML provides valuable insight into the evolution of web standards and the importance of structured markup.

Technical Specifications

Developer	W3C
First Released	2000
Type	Markup Language
Compression	N/A (Text-based)
Max Resolution	N/A (Text-based)
Color Depth	N/A (Text-based)

Pros & Cons

+Advantages

•Enforces well-formed syntax reducing parsing errors
•Compatible with XML tools and parsers
•Improves interoperability across devices
•Facilitates easier content transformation

−Disadvantages

•Stricter syntax rules increase development time
•Less forgiving of minor coding mistakes than HTML5
•Requires specific MIME type handling for strict XML parsing

Common Use Cases

Strict web application interfaces

Legacy mobile device rendering

XML data interchange workflows

High accessibility compliance projects

Convert from XHTML

Convert .xhtml files to other formats.

.xhtml.pdf

Convert XHTML (.xhtml) files to PDF (.pdf) format. Transform your XHTML files to PDF quickly and easily with File ConverterX — completely free.

.xhtml.docx

Convert XHTML (.xhtml) files to DOCX (.docx) format. Transform your XHTML files to DOCX quickly and easily with File ConverterX — completely free.

.xhtml.doc

Convert XHTML (.xhtml) files to DOC (.doc) format. Transform your XHTML files to DOC quickly and easily with File ConverterX — completely free.

.xhtml.csv

Convert XHTML (.xhtml) files to CSV (.csv) format. Transform your XHTML files to CSV quickly and easily with File ConverterX — completely free.

.xhtml.epub

Convert XHTML (.xhtml) files to EPUB (.epub) format. Transform your XHTML files to EPUB quickly and easily with File ConverterX — completely free.

.xhtml.odt

Convert XHTML (.xhtml) files to ODT (.odt) format. Transform your XHTML files to ODT quickly and easily with File ConverterX — completely free.

.xhtml.rtf

Convert XHTML (.xhtml) files to RTF (.rtf) format. Transform your XHTML files to RTF quickly and easily with File ConverterX — completely free.

.xhtml.html

Convert XHTML (.xhtml) files to HTML (.html) format. Transform your XHTML files to HTML quickly and easily with File ConverterX — completely free.

.xhtml.txt

Convert XHTML (.xhtml) files to Plain Text (.txt) format. Transform your XHTML files to TXT quickly and easily with File ConverterX — completely free.

.xhtml.xml

Convert XHTML (.xhtml) files to XML (.xml) format. Transform your XHTML files to XML quickly and easily with File ConverterX — completely free.

.xhtml.docm

Convert XHTML (.xhtml) files to DOCM (.docm) format. Transform your XHTML files to DOCM quickly and easily with File ConverterX — completely free.

.xhtml.dot

Convert XHTML (.xhtml) files to DOT (.dot) format. Transform your XHTML files to DOT quickly and easily with File ConverterX — completely free.

.xhtml.dotm

Convert XHTML (.xhtml) files to DOTM (.dotm) format. Transform your XHTML files to DOTM quickly and easily with File ConverterX — completely free.

.xhtml.dotx

Convert XHTML (.xhtml) files to DOTX (.dotx) format. Transform your XHTML files to DOTX quickly and easily with File ConverterX — completely free.

.xhtml.fodt

Convert XHTML (.xhtml) files to FODT (.fodt) format. Transform your XHTML files to FODT quickly and easily with File ConverterX — completely free.

.xhtml.ott

Convert XHTML (.xhtml) files to OTT (.ott) format. Transform your XHTML files to OTT quickly and easily with File ConverterX — completely free.

.xhtml.tsv

Convert XHTML (.xhtml) files to TSV (.tsv) format. Transform your XHTML files to TSV quickly and easily with File ConverterX — completely free.

.xhtml.wps

Convert XHTML (.xhtml) files to WPS (.wps) format. Transform your XHTML files to WPS quickly and easily with File ConverterX — completely free.

Convert to XHTML

Convert other files to .xhtml format.

.pdf.xhtml

Convert PDF (.pdf) files to XHTML (.xhtml) format. Transform your PDF files to XHTML quickly and easily with File ConverterX — completely free.

.docx.xhtml

Convert DOCX (.docx) files to XHTML (.xhtml) format. Transform your DOCX files to XHTML quickly and easily with File ConverterX — completely free.

.doc.xhtml

Convert DOC (.doc) files to XHTML (.xhtml) format. Transform your DOC files to XHTML quickly and easily with File ConverterX — completely free.

.csv.xhtml

Convert CSV (.csv) files to XHTML (.xhtml) format. Transform your CSV files to XHTML quickly and easily with File ConverterX — completely free.

.epub.xhtml

Convert EPUB (.epub) files to XHTML (.xhtml) format. Transform your EPUB files to XHTML quickly and easily with File ConverterX — completely free.

.odt.xhtml

Convert ODT (.odt) files to XHTML (.xhtml) format. Transform your ODT files to XHTML quickly and easily with File ConverterX — completely free.

.rtf.xhtml

Convert RTF (.rtf) files to XHTML (.xhtml) format. Transform your RTF files to XHTML quickly and easily with File ConverterX — completely free.

.html.xhtml

Convert HTML (.html) files to XHTML (.xhtml) format. Transform your HTML files to XHTML quickly and easily with File ConverterX — completely free.

.txt.xhtml

Convert Plain Text (.txt) files to XHTML (.xhtml) format. Transform your TXT files to XHTML quickly and easily with File ConverterX — completely free.

.xml.xhtml

Convert XML (.xml) files to XHTML (.xhtml) format. Transform your XML files to XHTML quickly and easily with File ConverterX — completely free.

.abw.xhtml

Convert ABW (.abw) files to XHTML (.xhtml) format. Transform your ABW files to XHTML quickly and easily with File ConverterX — completely free.

.docm.xhtml

Convert DOCM (.docm) files to XHTML (.xhtml) format. Transform your DOCM files to XHTML quickly and easily with File ConverterX — completely free.

.dot.xhtml

Convert DOT (.dot) files to XHTML (.xhtml) format. Transform your DOT files to XHTML quickly and easily with File ConverterX — completely free.

.dotm.xhtml

Convert DOTM (.dotm) files to XHTML (.xhtml) format. Transform your DOTM files to XHTML quickly and easily with File ConverterX — completely free.

.dotx.xhtml

Convert DOTX (.dotx) files to XHTML (.xhtml) format. Transform your DOTX files to XHTML quickly and easily with File ConverterX — completely free.

.fb2.xhtml

Convert FB2 (.fb2) files to XHTML (.xhtml) format. Transform your FB2 files to XHTML quickly and easily with File ConverterX — completely free.

.fodt.xhtml

Convert FODT (.fodt) files to XHTML (.xhtml) format. Transform your FODT files to XHTML quickly and easily with File ConverterX — completely free.

.hwp.xhtml

Convert HWP (.hwp) files to XHTML (.xhtml) format. Transform your HWP files to XHTML quickly and easily with File ConverterX — completely free.

.lrf.xhtml

Convert LRF (.lrf) files to XHTML (.xhtml) format. Transform your LRF files to XHTML quickly and easily with File ConverterX — completely free.

.ott.xhtml

Convert OTT (.ott) files to XHTML (.xhtml) format. Transform your OTT files to XHTML quickly and easily with File ConverterX — completely free.

.pages.xhtml

Convert Pages (.pages) files to XHTML (.xhtml) format. Transform your PAGES files to XHTML quickly and easily with File ConverterX — completely free.

.tsv.xhtml

Convert TSV (.tsv) files to XHTML (.xhtml) format. Transform your TSV files to XHTML quickly and easily with File ConverterX — completely free.

.wpd.xhtml

Convert WPD (.wpd) files to XHTML (.xhtml) format. Transform your WPD files to XHTML quickly and easily with File ConverterX — completely free.

.wps.xhtml

Convert WPS (.wps) files to XHTML (.xhtml) format. Transform your WPS files to XHTML quickly and easily with File ConverterX — completely free.

Frequently Asked Questions

XHTML requires strict XML syntax rules such as closed tags and proper nesting, whereas HTML is more lenient.

Need to convert XHTML files?

File ConverterX supports converting .xhtml files to and from dozens of formats — completely free.

Browse Conversions