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DTD W3C · 1.0 (second edition)

XHTML 1.0 Strict

The Strict document type of XHTML 1.0, for pages and content exports written as XML.

Validate with this schema Try it with the example

About

XHTML 1.0 Strict is HTML 4 written as XML, without presentational elements such as font and center.

Good to know

  • The DTD is applied to the document as given. Named entities such as   or © are only known when the DTD is read while parsing, which the browser cannot do for a DOCTYPE that points at w3.org. Use character references ( , ©) or the five XML entities.

Files

4 files · 53.9 KB

The validator loads all of these with their folder structure, so includes and imports resolve as published.

Example document

page.html · 418 B · valid against this schema

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In CI and from code

The same schema by its name, xhtml-1.0-strict, through the API.

npx @xmlvalid/cli validate "**/*.xml" --schema xhtml-1.0-strict
- uses: xmlvalid/validate-action@v1
  with:
    files: "**/*.xml"
    schema: xhtml-1.0-strict
    api-key: ${{ secrets.XMLVALID_API_KEY }}
curl https://xmlvalid.com/api/v1/validations \
  -H "Authorization: Bearer $XMLVALID_API_KEY" \
  -F document={{ $schema->example ?? 'document.xml' }} -F schema=xhtml-1.0-strict

Free accounts get 100 API validations a month. On Pro, a URL monitor can check a published document against this schema every hour and email you when it breaks. More CI setups