A legacy but still-parsed language hint. The html lang attribute is authoritative.
- Free, no signupNo account, no card
- No AI in the score986 deterministic rules
- Nothing publishedYour scans stay yours
- Answers in secondsQuick scan, no browser
How this rule is weighted
- Importance
- 1 / 10
- How much this matters relative to other rules.
- Confidence
- SPECIFICATION
- A standard says so: HTML, WCAG, an RFC or Google's own documentation.
- Severity
- info
- How the finding is presented when it fails.
- Scoring
- Excluded
- Reported in the report, never penalised.
Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.
Questions about this rule
- Does SEO_CONTENT_LANGUAGE_META affect my score?
- No. It is a detection rule: it runs, appears in your report and never penalises you. "Content-Language meta declared" is information about the page rather than a defect - most pages are not expected to satisfy it.
- What does SPECIFICATION confidence mean?
- A standard says so: HTML, WCAG, an RFC or Google's own documentation. Confidence is a declared tier rather than a per-rule number, so every rule backed by the same class of evidence carries the same weight - which is what makes the score reproducible instead of hand-tuned.
- How do I check SEO_CONTENT_LANGUAGE_META on my own site?
- Paste your URL into the box above and it runs only this rule, usually in a couple of seconds. It is also included in the SEO checker and in a full scan.
Tags
- seo
Related SEO rules
- Page is not blocked by a robots meta tagA noindex robots meta tag removes the page from search results entirely. When unintentional this single tag outweighs every other SEO signal on the page.SEO_ROBOTS_META_INDEXABLE
- Title tag existsEvery indexable page must have a non-empty <title> element.SEO_TITLE_EXISTS
- X-Robots-Tag header does not block indexingAn X-Robots-Tag: noindex response header removes the page from search results just as effectively as the meta tag, but is invisible in the page source.SEO_XROBOTS_INDEXABLE
- Googlebot-specific noindex absentA googlebot-specific noindex removes the page from Google while leaving other engines unaffected - easy to miss.SEO_NO_INLINE_NOINDEX_COMMENT
- Mobile viewport declaredWithout a viewport meta tag mobile browsers render at desktop width and zoom out, which Google treats as not mobile-friendly.SEO_VIEWPORT_META
- Title length within Google's recommended rangeTitles significantly longer than ~60 characters are commonly truncated in search results.SEO_TITLE_LENGTH