10 GEO mistakes to absolutely avoid in 2026

Here are the 10 most frequent GEO mistakes on websites in 2026, sorted by score impact. For each: why it's penalizing, and the concrete fix. Most are resolved in less than an hour of technical work.

1. Pure SPA without server rendering — Critical (-20 pts)

Why: AI crawlers do not read your JavaScript. Without SSR, they see an empty <div id="root">.

Fix: Switch to Next.js Server Components, Nuxt SSR, Astro, or pre-render via Prerender.io as transition.

2. robots.txt with User-agent: * Disallow: / — Critical (-10 pts)

Why: Inherited from a badly cleaned staging or a default CMS config, it blocks all bots including AI.

Fix: List explicitly GPTBot, ChatGPT-User, Google-Extended, ClaudeBot, PerplexityBot, CCBot with Allow: /.

3. No JSON-LD block on key pages — Heavy (-20 pts max)

Why: LLMs need structured data to precisely identify the entity a page represents.

Fix: At minimum Organization global. FAQPage on FAQs, HowTo on tutorials, LocalBusiness if you are local.

4. No /llms.txt at root — Moderate (-5 pts)

Why: Emerging standard followed by the main LLMs to identify a site's priority pages.

Fix: Create a /llms.txt in Markdown: site H1, intro in > blockquote, sections with absolute links.

5. Content without dateModified nor <time> tag — Moderate (-7 pts)

Why: Without a date, LLMs cannot evaluate freshness — and prefer to cite a dated source.

Fix: Add datePublished + dateModified in Article/WebPage JSON-LD, and a visible <time datetime="...">.

6. No structured FAQ section — Moderate (-15 pts cumulated)

Why: FAQPage is one of the JSON-LD types most exploited by ChatGPT, Perplexity and AI Overviews.

Fix: Add a real FAQ (explicit questions in "How…?" format) with FAQPage JSON-LD.

7. Multiple <h1> on the same page — Moderate (-7 pts)

Why: Confuses LLMs about the main subject of the page and breaks the logical hierarchy.

Fix: A single <h1> per page (the main subject), <h2> for sections, <h3> for subsections.

8. Intro paragraph buried under marketing hero — Moderate (-10 pts)

Why: LLMs extract the first paragraph after the H1 in priority. If it's empty or too verbose, they skip.

Fix: 15 to 80 words of factual response right after the H1. Inverted pyramid: essential, then detail.

9. No canonical tag — Light (-1.5 pts)

Why: Without canonical, LLMs may index multiple variants (with/without UTM, www vs apex) and dilute the signal.

Fix: Add <link rel="canonical" href="..."> on all pages — pointing to the canonical version.

10. No OpenGraph image nor Twitter Card — Light (-3.5 pts)

Why: LLMs use og:image in some syntheses; without OG, your shared pages on social networks look ugly.

Fix: Dynamically generate a 1200×630 OG image (Next 16 has app/opengraph-image.tsx native).

Audit in 5 seconds

ScoreGeo automatically detects the 10 mistakes above (and a few others more subtle). The report tells you exactly which ones are present on your site, their impact in points and the recommended fix.

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