Information Density Checker: Is Your Content Easy for AI to Quote?
AI retrieval works on chunks, not whole pages, so dense, self-contained, well-structured sections are far easier to quote than walls of filler. Glippy measures how much substantive information each section carries, whether it stands alone as a quotable chunk, and where boilerplate and padding dilute your answers.
What Is Information Density?
Information density is the ratio of substantive, factual content to filler, repetition, and boilerplate in a piece of writing. Dense content packs claims, data, and explanation into each section without padding. For AI systems, high density means more usable signal per chunk and a higher chance your content gets retrieved and quoted.
What Glippy Checks
- Information density - the share of sentences that carry a number, a name, a reason, a definition or a source, against filler phrases and empty intensifiers
- Self-contained sections - whether each H2 section, read in page order with its subsections, opens with a full sentence and carries enough detail (or a list or table) to be quoted on its own
- Claim-evidence pairing - whether percentages, multipliers and "N out of M" figures sit next to a source, an explanation or a link. Numbers in a labeled data table count as backed, and discounts such as "20% off" are not treated as claims
- Semantic foam - paragraphs that lean on buzzwords ("world-class", "seamless", "cutting-edge") without a single specific
- Content-to-page ratio - how much of the visible text is main content rather than navigation and boilerplate, and whether a <main> landmark marks it
Semantic foam and content-to-page ratio are scored on every page type. Information density, self-contained sections and claim-evidence pairing read wording and can misjudge a page, so they are beta checks: shown for guidance with a one-line reason, not scored. Reviews and comments are left out of the density, claim and foam checks, so they neither dilute nor inflate the page's own copy, and the word lists cover English, Dutch, German and French.
Why Density Matters for AI Citations
When an AI system answers a question, it pulls the most relevant chunks it can find and quotes them directly. Dense, self-contained sections give it clean material to lift, while filler-heavy pages bury the useful claims and get passed over. Tightening density across your most citable pages raises the odds that AI quotes you instead of a competitor.
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