CONVERT XHTML → RST (XHTML to RST)
Fast, secure XHTML to RST conversion. No registration required.
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Ghostscript + QPDFHOW TO CONVERT XHTML → RST
Upload your XHTML
Drop the document onto the uploader. We transfer over HTTPS and keep the file in an isolated processing container.
Render with LibreOffice
LibreOffice opens the XHTML headlessly and writes it as RST with styles, tables and images mapped across.
Download the RST
The RST is ready to download; typography, pagination and embedded assets match what you saw in the source.
Here is the short version — XHTML is a document format oriented around a particular office suite or publishing pipeline. Hence the need for RST. Converting XHTML to RST keeps the document's content but changes how it is distributed. XHTML Document may be the right editing format; reStructuredText may be the right delivery format (or vice-versa). KaijuConverter renders the document through a LibreOffice + pandoc pipeline so headings, paragraphs, lists, tables, images and hyperlinks survive the round-trip intact. Technical note: XHTML is a document format oriented around a particular office suite or publishing pipeline. Compare that with RST is a document format oriented around a particular office suite or publishing pipeline.
Why convert XHTML to RST
XHTML and RST both describe paginated text, but they target different parts of the document life cycle. XHTML is usually editable; RST is usually final. Converting is about moving from editing to distribution (or the other way round) without losing headings, styles, tables or embedded images along the way.
XHTML vs RST — Technical specifications
Side-by-side comparison of the technical details.
XHTML
- MIME types
- application/xhtml+xml, text/html
- Extensions
- .xhtml, .xht, .xml
- Standards
- XHTML 1.0 (2000), XHTML 1.1 (2001)
- Encoding
- UTF-8 (required with XML prolog)
- Used in
- EPUB, DocBook, some government sites
- MIME Type
- application/xhtml+xml
- Extension
- .xhtml
- Category
- Documents & Text
- Full Name
- XHTML Document
- Conversion Engine
- PANDOC
RST
- Encoding
- UTF-8
- MIME Type
- text/x-rst
- Extension
- .rst
- Category
- Documents & Text
- Full Name
- reStructuredText
- Conversion Engine
- PANDOC
- MIME type
- text/x-rst
- Toolchain
- Docutils, Sphinx, Read the Docs
- Related formats
- MyST (Markdown + RST directives)
| Specification | XHTML | RST |
|---|---|---|
| MIME types | application/xhtml+xml, text/html | — |
| Extensions | .xhtml, .xht, .xml | — |
| Standards | XHTML 1.0 (2000), XHTML 1.1 (2001) | — |
| Encoding | UTF-8 (required with XML prolog) | UTF-8 |
| Used in | EPUB, DocBook, some government sites | — |
| MIME Type | application/xhtml+xml | text/x-rst |
| Extension | .xhtml | .rst |
| Category | Documents & Text | Documents & Text |
| Full Name | XHTML Document | reStructuredText |
| Conversion Engine | PANDOC | PANDOC |
| MIME type | — | text/x-rst |
| Toolchain | — | Docutils, Sphinx, Read the Docs |
| Related formats | — | MyST (Markdown + RST directives) |
XHTML vs RST — Strengths and limitations
What each format does best, and where it falls short.
XHTML Strengths
- Rigorous XML syntax — can be parsed with any XML tool.
- Native EPUB and DocBook support.
- Enforces clean markup — no sloppy error recovery.
- Namespaces allow mixing SVG, MathML, and XHTML in one document.
Limitations
- Browsers reject XHTML with strict MIME on any markup error — harsh failure mode.
- Authoring is more tedious than HTML5.
- Not served by ~99% of the web.
RST Strengths
- Rich directives for admonitions, code, math, and custom elements.
- Cross-references work within and across documents.
- Sphinx ecosystem offers best-in-class Python docs output.
- Standardized as part of Python PEP infrastructure.
- Plain text, version-controllable.
Limitations
- Syntax denser than Markdown — higher learning curve.
- Less widely adopted than Markdown outside Python world.
- Multiple directive dialects (Sphinx, Docutils, custom) create fragmentation.
Quality & Compatibility
LibreOffice handles the heavy lifting and maps the overwhelming majority of XHTML features to their RST equivalents. Standard system fonts (Arial, Calibri, Times, Helvetica) transfer exactly; corporate or custom fonts are substituted with the closest available match, which can shift line breaks by a character or two. Inline images embed at original resolution.
Tips for Best Results
- Embed fonts in the XHTML before uploading if you use non-system fonts — it guarantees the RST renders identically on any viewer.
- Check tables, figure captions and page headers after conversion; complex layouts occasionally need a minor nudge in the target application.
- For documents with a table of contents, refresh the TOC field after opening the RST so page numbers reflect the new pagination.
Frequently Asked Questions
Yes, as long as the fonts are standard (system fonts or common office fonts like Arial, Calibri, Times, Helvetica). Custom corporate fonts survive if they are embedded in the source document; otherwise the conversion substitutes the closest available match, which can shift line breaks by a character or two.
Yes. Inline images are embedded into the RST at full resolution, editable tables become native RST tables, and hyperlinks keep their URLs. Complex features unique to XHTML — macros, form fields, track-changes — are mapped where an equivalent exists in RST and flattened into static content otherwise.
All uploads go over TLS, files are processed in isolated containers and both the source and the output are deleted within two hours. No account is required, file contents are never indexed or used for training, and the paid plan adds a signable data-processing agreement for regulated workflows.
XHTML Document
Source formatXHTML is XML-compliant HTML for strict document processing.
reStructuredText
Target formatRST (reStructuredText) is a lightweight markup language used in Python documentation.
Common Use Cases
Share across platforms
Send RST files to anyone without worrying about whether they have the right software for XHTML.
Embed in documents
Drop RST output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
RST often produces smaller files than XHTML for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
XHTML vs RST — Typical file sizes
Approximate file sizes for common scenarios.
- EPUB chapter 5-50 KB
- DocBook reference page 10-100 KB
- API reference page 5-50 KB
- Sphinx project chapter 20-100 KB
- Full library documentation 500 KB - 10 MB
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Related comparisons
See these formats side by side to understand which fits your use case best.
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