Audit rules
Doctype
The document does not start with a doctype declaration. In a QuikSEO audit, a failure of this rule has warning severity and counts against the score. Below are the exact condition, its exceptions and the sources behind it, followed by the other rules of the same group.
document.doctypeWarning01 — Definition
How This Rule Is Checked
The rule is a pure function of the fetched page: no extra requests, no account settings. The same input always gives the same result.
Rule Severity and Score
- Rule id
document.doctype- Group
- Document
- Severity of a failure
- Warning
- Counts in the score
- Yes, whenever it applies to the page
- Required for a score
- No
- Replaces the check
doctype
Condition and Exceptions
- Condition
- No doctype → fail
- Exceptions
- A UTF-8 byte order mark before the doctype is allowed (pass)
Sources
- Sources
- HTML Standard, 13.1.1 The DOCTYPE (WHATWG, Q59)
02 — Document
Other Rules in This Group
The other checks of the same group, each with its own condition and sources.
- Character Encoding Declarationdocument.charset
- Deprecated HTML Tagsdocument.deprecated_tags
- Favicondocument.favicon
- Inline CSSdocument.inline_css
- HTML Language Attributedocument.lang
- Meta Keywordsdocument.meta_keywords
- Meta Refreshdocument.meta_refresh
- Meta Viewportdocument.viewport