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GEO Snapshot vs Detailed SEO Extension: Fast On Page Snapshot vs Full AI Audit

Diagram: one card in two parts. The top section is a page with three lines of content in it. Below a heavier rule, five stacked layers run to the foot of the card. Two probes drop in from above: the grey one stops flush with the rule where the page ends, and the orange one carries on through every layer, marking each boundary it crosses, and finishes near the bottom.

Detailed SEO Extension and GEO Snapshot both run in one click. What they check afterward is where they part ways.

Built for one thing: speed

Detailed SEO Extension is a fast, free, no account on page snapshot, title tag, meta description, meta robots tag, headings, images and schema markup, built for a quick look rather than a deep audit. It is used weekly by a large base of SEO professionals for exactly that speed. Worth knowing as of 2026 it is developed and owned by Ahrefs, the same company behind Ahrefs SEO Toolbar, so if you are avoiding overlap in your extension stack, the two are no longer independent products.

What a fast snapshot can't catch

A diagram on a black ground titled "Three checks that are not on the list", under an orange label reading "What a fast snapshot can't catch". Three cards sit side by side, each marked with a hollow dotted ring rather than a cross. The first is headed "AI crawler access" and reads "Whether the bots behind AI answers are allowed to read the page at all." The second is headed "Served HTML vs rendered DOM" and reads "Whether the words a person sees survive into the version a crawler receives." The third is headed "llms.txt" and reads "Whether the file AI clients look for exists, and whether it lists anything useful." A line across the foot reads "A page can pass every check on the list and still be unreadable to an AI crawler."

Detailed is explicitly built for speed over depth. It does not check AI crawler access, does not parse robots.txt by bot, and does not compare a page's served HTML against its rendered version, so a page can pass every check in Detailed while still being invisible to the crawler behind an AI answer.

The layer GEO Snapshot adds underneath

Where Detailed gives a fast read of what is on the page, GEO Snapshot adds the layer underneath, what is actually reachable by a crawler that does not run JavaScript, whether robots.txt is quietly blocking the AI bot that matters, and whether llms.txt and the sitemap back up what the page claims. Both are free and require no account, the difference is depth, not price.

Both free, so price isn't the deciding factor

Neither tool costs anything at any tier, no paid version, no account requirement for any check. This is one of the few comparisons in this series where price plays no part in the decision, it comes down entirely to depth versus speed.

Quick glance or full audit, chosen per page

Which one to reach for usually depends on where a page sits in the process, not who owns it.

Agency doing a quick pass across many client pages. Detailed SEO Extension first, its one click on page snapshot is built for speed across volume. Follow up with GEO Snapshot on pages flagged as important or underperforming, since Detailed will not surface an AI crawler access problem.

Single site owner about to publish a page. Run GEO Snapshot before it goes live, the served HTML versus rendered DOM check catches JavaScript content issues that a fast on page snapshot has no way to see. Detailed remains useful afterward for a quick meta tag and heading check.

In house team with Detailed already in the daily toolkit. Keep it for the quick glance, add GEO Snapshot as a pre publish or periodic deeper check rather than a daily one, since it covers more ground and takes a little longer to read through.

Detailed SEO Extension and GEO Snapshot, compared

An eleven row comparison of GEO Snapshot against Detailed SEO Extension, with the GEO Snapshot column picked out in an orange band. GEO Snapshot answers yes to all of: AI crawler access and robots.txt per bot; served HTML against rendered DOM; llms.txt check; title, meta description and meta robots; headings outline; image and alt text checks; speed and Core Web Vitals; and site wide sitemap scan. Detailed SEO Extension answers yes to title, meta description and meta robots; headings outline; and image and alt text checks, and no to AI crawler access, served HTML against rendered DOM, llms.txt, speed and Core Web Vitals, and the site wide sitemap scan. On schema markup GEO Snapshot validates by type while Detailed shows presence. Neither requires an account and both are free. A footnote reads "Compared August 2026. Both are free and neither asks for an account."

Questions people actually ask

Is Detailed SEO Extension still independent from Ahrefs? No, Ahrefs took over its development in 2026. The extension itself is unchanged and still free with no account required.

Does Detailed check AI crawler access? No, its checks are on page elements, meta tags, headings, images and schema presence.

Which is faster to read? Detailed, it is built specifically for a quick glance. GEO Snapshot covers more ground and takes slightly longer to read through.

Do they overlap on schema checks? Both look at schema markup. GEO Snapshot validates it against the required and recommended properties for its specific type, Detailed shows what is present.

Is either tool better value given both are free? Neither costs more than the other, so the choice comes down to what you need in the moment, a fast snapshot or a full AI readiness check.

Can I use both? Yes, they do not conflict and answer different questions.

Should Detailed users add GEO Snapshot or switch entirely? Add rather than switch. Detailed's speed is genuinely useful for routine checks, GEO Snapshot fills the AI crawler gap it was never built to cover.

GEO Snapshot

See any page the way an AI crawler does. Twenty eight checks and a site wide scan, in one click. Free, with no account and nothing leaving your browser.

What it does with your data
Add to Chrome, free

See also: Introducing GEO Snapshot

Resources — min read Last updated August 2026
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