Content Quality: A Key Factor for AI and LLM Engines

1. Content length
2. Content structure
3. Presence of numerical data
4. Presence of external links
5. Indication of an author
6. Overall readability of the text
7. Lexical diversity of the content
8. Consistency between the content and the title/H1

1. Content length

Content length is an important factor for search engines, as it can indicate the depth and comprehensiveness of a topic. For GEO, sufficiently long content allows AI models to better understand the context and extract richer information. Recommendation:

• For articles and content pages, aim for a minimum of 600 words.
• For the home page, a minimum of 400 words is recommended.
• Measurement tip: Word count can be checked using online word counting tools.

Sentences that are too long can make the text difficult to read and understand, both for users and for AI natural language processing algorithms. Keep the average sentence length between 10 and 25 words. This promotes better readability and understanding of the content.

2. Content Structure

A good content structure, with well-organized paragraphs and the use of lists, improves readability and the ability of AI engines to analyze and synthesize information.

For content longer than 600 words, ensure there are at least two paragraphs or lists. Use paragraphs to develop ideas and lists (ordered or unordered) to present information in a concise and easily digestible manner.

For articles and long-form content, a well-structured introduction and conclusion are essential to guide the reader and summarize key points. They also help AIs quickly grasp the essence of the content.

Within an article, ensure there is an introduction that presents the topic and objectives of the article, and a conclusion that summarizes the main points and offers a final perspective or call to action.

3. Presence of numbers or statistics

Including numbers, data, and statistics strengthens the credibility and authority of the content. For AI engines, these elements can be indicators of the quality and reliability of the information.

• Recommendation: Include numbers, percentages, dates, or relevant statistics to support your claims and provide concrete evidence. Always cite your sources when using external data.

4. Presence of external links (source citations)

External links to reliable and relevant sources are a sign of quality and thorough research. They allow search engines to validate information and establish semantic connections.

• Recommendation: Include external links to authority sites (universities, institutions, scientific publications, recognized sites in the field) to cite your sources, provide additional references, or delve deeper into a topic. Use descriptive anchor text for these links.

5. Authorship Indication

Clearly identifying the author of a piece of content helps establish authority and trust, factors that are increasingly important for search engines, especially as algorithms move toward evaluating expertise, authority, and trustworthiness (E-E-A-T).

• Recommendation: Clearly indicate the author of the content, preferably with a biography or a link to an author page. This can include the person's name, title, and expertise in the field.

6. Overall Readability of the Text

Readability is the ease with which a text can be read and understood. Readable text is appreciated by users and is a quality indicator for search engines. Recommendation:

• Font Size: Ensure the font size is sufficient for comfortable reading, ideally ≥ 16px for body text on computer screens, and suitable for mobile devices.
• Contrast: Check that the contrast between the text and the background is sufficient for people with visual impairments. Use contrast checking tools to comply with WCAG standards.
• Leading and Spacing: Adequate leading and paragraph spacing improve reading comfort.

7. Lexical Diversity of Content

Lexical diversity refers to the richness of the vocabulary used. Content with good lexical diversity is perceived as richer and more informative, avoiding excessive repetition of words or expressions.

Vary your vocabulary and use synonyms to avoid repetition. This makes the text more pleasant to read and can help cover a broader semantic field, which is beneficial for GEO.

Avoid "brick paragraphs" (>180 uninterrupted words). "Brick paragraphs" are very long blocks of text without any breaks (line breaks, subheadings, lists, etc.). They are difficult to read and discourage users.

Avoid paragraphs of more than 180 uninterrupted words. Break your content into shorter paragraphs and use subheadings, lists, or images to break up the text and make it easier to read quickly.

8. Consistency between content and title/H1

Thematic consistency between the page title (<title>), the main heading (<h1>), and the body content is essential for relevance and ranking.

Make sure the main content of the page addresses the topic announced in the <title> and <h1> tags. Inconsistency can lead to a poor user experience and downgrading by search engines.

Resources & Helpful Links

• Google Search Central - Create Helpful and Trustworthy Content