What is keyword density?
Keyword density is the percentage of times a keyword appears on a web page compared to the total word count. While it was once a major ranking factor, modern SEO focuses more on 'topical relevance' and natural language rather than hitting a specific numerical percentage.
In the early days of SEO, keyword density was a primary focus. If you wanted to rank for 'red apples', you would make sure that phrase appeared as many times as possible. This led to 'keyword stuffing', which made content unreadable. Today, search engines like Google use sophisticated Natural Language Processing (NLP) to understand the context of a page. They look for related terms (LSI keywords) and synonyms rather than just a single repeating phrase. While there is no 'perfect' keyword density, most experts suggest keeping your primary keyword below 1-2% of the total text. If you find yourself using a keyword so often that it feels repetitive or unnatural to a human reader, you have likely exceeded a healthy density. The goal today is 'semantic richness'—writing a comprehensive piece of content that covers a topic so thoroughly that the search engine naturally understands what it's about.
ステップバイステップガイド
Write for Humans First
Focus on creating a high-quality article that flow naturally before worrying about keywords.
Insert Keywords Strategically
Place your primary keyword in the H1, the first paragraph, and at least one H2.
Use Synonyms
Incorporate variations and related terms to provide context without being repetitive.
Check for Over-Optimization
Read your content aloud; if the keyword sounds forced, remove some instances or use pronouns.
プロのヒント
- Focus on 'Keyword Salience' (relevance) rather than just 'Keyword Count'.
- Use tools like Surfer SEO or Clearscope to identify related terms you might be missing.
- Don't forget to include keywords in your meta tags and image alt text as well.
pSeoMaticが役立つ理由
Pseomatic moves beyond basic keyword density. Our 'Semantic Score' measures how well your content covers a topic's entire vocabulary, suggesting related terms and entity associations that help Google view your page as a comprehensive authority on the subject.
pSeoMaticを無料で試す関連する質問
What is the best keyword density?
There is no magic number, but most SEOs recommend staying around 0.5% to 1.5%.
What is keyword stuffing?
The practice of loading a webpage with keywords in an attempt to manipulate rankings, which Google penalizes.
What are LSI keywords?
Latent Semantic Indexing keywords are terms and phrases that are conceptually related to your main topic.
関連ガイド
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