SEO assessors - Yoast/javascript GitHub Wiki

Which assessor?

Overview of used assessors in yoastseo

Standard SEO assessor (Focus keyphrase)

• Keyphrase in introduction (IntroductionKeywordAssessment)
• Keyphrase length (KeyphraseLengthAssessment)
• Keyword density (KeywordDensityAssessment)
• Keyword in metadescription (MetaDescriptionKeywordAssessment)
• Competing links (TextCompetingLinksAssessment)
• Internal links (InternalLinksAssessment)
• Page title keyword assessment (TitleKeywordAssessment)
• URL keyword assessment (UrlKeywordAssessment)
• Length of metadescription (MetaDescriptionLengthAssessment) -> Cornerstone scores!
• Keyword in subheadings (SubHeadingsKeywordAssessment)
• Keyword in image alt attributes (textImagesAssessment) -> Cornerstone scores!
• Text length (TextLengthAssessment) -> Cornerstone scores and boundaries!
• Outbound links (OutboundLinksAssessment) -> Cornerstone scores!
• Title width (PageTitleWidthAssesment) -> Cornerstone scores!
• Keyphrase consists of function words only (FunctionWordsInKeyphrase)
• Previously used keywords (previouslyUsedKeywords)
• Single H1 assessment

Taxonomy assessor

• Keyphrase in introduction (IntroductionKeywordAssessment)
• Keyphrase length (KeyphraseLengthAssessment)
• Keyword density (KeywordDensityAssessment)
• Keyword in metadescription (MetaDescriptionKeywordAssessment)
• Page title keyword assessment (TitleKeywordAssessment)
• URL keyword assessment (UrlKeywordAssessment)
• Length of metadescription (MetaDescriptionLengthAssessment)
• Taxonomy text length (taxonomyTextLengthAssessment)
• Title width (PageTitleWidthAssesment)
• Keyphrase consists of function words only (FunctionWordsInKeyphrase)
• Previously used keywords (previouslyUsedKeywords)
• Single H1 assessment

Related keywords (all keywords after the first)

• Keyphrase in introduction (IntroductionKeywordAssessment)
• Keyphrase length (KeyphraseLengthAssessment)
• Keyword density (KeywordDensityAssessment)
• Keyword in metadescription (MetaDescriptionKeywordAssessment)
• Keyword in image alt attributes (textImagesAssessment)
• Competing links (TextCompetingLinksAssessment)
• Previously used keywords (previouslyUsedKeywords)

Related keywords taxonomy

• Keyphrase in introduction (IntroductionKeywordAssessment)
• Keyphrase length (KeyphraseLengthAssessment)
• Keyword density (KeywordDensityAssessment)
• Keyword in metadescription (MetaDescriptionKeywordAssessment)
• Previously used keywords (previouslyUsedKeywords)

Premium

Keyword distribution is added (not on related keywords).