# Lantad > Lantad is an AI visibility scanner. Paste a URL and see what AI crawlers > like GPTBot, ClaudeBot, and PerplexityBot can and cannot read on it: the > crawler view versus the browser view, a per-bot access matrix across 15 > named crawlers, a graded AI Visibility Score, and ranked, platform-aware > fixes. Free, no signup. Honesty note: independent 2026 data shows llms.txt files like this one have no measurable effect on AI citations. We ship one anyway because it costs nothing, and our methodology page says exactly this. ## Core - [Scan a URL for AI visibility](https://lantad.co/): the free scanner. - [What AI says about your brand](https://lantad.co/what-ai-says): a live model answer, before and after it reads your page. - [Compare against a competitor](https://lantad.co/compare): two sites, side by side. - [Scan multiple pages in one go](https://lantad.co/multiscan): up to 8 pages, one combined score. - [Prompt tracking](https://lantad.co/prompts): which AI prompts a page could answer. ## Free tools - [Free AI visibility tools](https://lantad.co/tools): single-purpose checks. - [What GPTBot sees](https://lantad.co/tools/what-gptbot-sees): the exact text an AI crawler reads from a page. - [robots.txt tester](https://lantad.co/tools/robots-txt-tester): which AI crawlers a robots.txt allows or blocks. - [llms.txt checker](https://lantad.co/tools/llms-txt): whether a site serves an llms.txt, and whether it is any good. - [AI crawler directory](https://lantad.co/tools/ai-crawlers): every AI bot's user agent and how to control it. ## Definitions Reference pages written to be quoted. Each one opens with a single standalone definition sentence. - [AI visibility glossary](https://lantad.co/glossary): the index of terms. - [Generative Engine Optimization (GEO)](https://lantad.co/glossary/geo) - [Answer Engine Optimization (AEO)](https://lantad.co/glossary/aeo) - [AI visibility](https://lantad.co/glossary/ai-visibility) - [llms.txt](https://lantad.co/glossary/llms-txt) - [Prose Parity](https://lantad.co/glossary/prose-parity): the crawler view versus the browser view, scored. - [AI crawler](https://lantad.co/glossary/ai-crawler) - [Structured data for AI (schema markup)](https://lantad.co/glossary/structured-data) - [Entity confidence](https://lantad.co/glossary/entity-confidence): five crawler-view JSON-LD signals, scored out of 100, diagnostic only. ## Getting cited by a specific platform - [How to get cited by AI](https://lantad.co/how-to-get-cited): the index. - [ChatGPT](https://lantad.co/how-to-get-cited/chatgpt) - [Perplexity](https://lantad.co/how-to-get-cited/perplexity) - [Google AI Overviews](https://lantad.co/how-to-get-cited/google-ai-overviews) - [Claude](https://lantad.co/how-to-get-cited/claude) ## Fixes by stack What specifically breaks AI readability on each stack, and how to fix it. - [Fix AI visibility by stack](https://lantad.co/fix): the index. - [Next.js](https://lantad.co/fix/nextjs) - [React (single-page apps)](https://lantad.co/fix/react) - [Framer](https://lantad.co/fix/framer) - [Shopify (Liquid)](https://lantad.co/fix/shopify) - [Lovable](https://lantad.co/fix/lovable) ## Research and data - [AI Visibility Index](https://lantad.co/research): live figures aggregated from real scans run through Lantad. - [Blog](https://lantad.co/blog): findings from real scans, guides, and product notes. - [What a crawler actually meets on a real storefront](https://lantad.co/blog/what-a-crawler-meets-on-a-real-storefront): six real captures, measured 15 July 2026. - [Five structural signals that tell an AI who you are](https://lantad.co/blog/five-signals-that-tell-ai-who-you-are): the five signals behind Entity Confidence, the 30-page sample they were weighted from, and the two we removed. - [Why we will not grade a page we could not measure](https://lantad.co/blog/why-we-withhold-a-grade): the seven scan outcomes, and why only one is a grade. - [Three AI crawler tokens that will never appear in your logs](https://lantad.co/blog/the-crawler-tokens-that-never-appear-in-your-logs): Google-Extended, Applebot-Extended and anthropic-ai are robots.txt tokens with no user agent, so a log search returns zero on every site. - [A user agent is a claim, not an identity](https://lantad.co/blog/a-user-agent-is-a-claim-not-an-identity): why every per-crawler figure counts requests that said they were a crawler, and what verification costs. - [What the evidence actually says about llms.txt](https://lantad.co/blog/what-the-evidence-says-about-llms-txt): Ahrefs measured 137,210 domains in May 2026 and found 97 percent of valid llms.txt files received zero traffic. - [Two layers decide whether AI can read your site, and robots.txt is the weaker one](https://lantad.co/blog/two-layers-decide-if-ai-can-read-your-site): Cloudflare announced on 1 July 2026 that from 15 September newly onboarded domains block Training and Agent bots by default on ad-carrying pages, while RFC 9309 says robots.txt is not access control. - [The AI preferences standard you cannot deploy yet](https://lantad.co/blog/the-ai-preferences-standard-you-cannot-deploy-yet): the IETF AIPREF vocabulary draft reached revision 06 on 28 April 2026, while the attachment draft defining the Content-Usage header and the robots.txt content-usage rule expired on 1 May 2026. - [The AI Overviews opt out does not live on your site](https://lantad.co/blog/ai-overviews-opt-out-does-not-live-on-your-site): Google began testing a Search Console setting on 3 June 2026 that excludes a property from AI Overviews and AI Mode, and because it is an account setting rather than a file, no external scan can verify it. ## Comparisons Factual, non-disparaging comparisons. Most tools track what AI already says about a brand; Lantad measures and fixes whether AI can read the pages at all. - [How Lantad compares](https://lantad.co/vs): the index. - [Lantad vs Profound](https://lantad.co/vs/profound) - [Lantad vs Otterly.AI](https://lantad.co/vs/otterly) - [Lantad vs Peec AI](https://lantad.co/vs/peec) ## Service and plans - [Done-for-you fixes](https://lantad.co/services): we implement the fixes and re-scan to prove the gain. - [Pricing](https://lantad.co/pricing): monitoring plans, one-time audits, and fix engagements. ## Developers - [REST API and MCP server](https://lantad.co/developers): scan from code, or connect Lantad to Claude and ChatGPT as a tool. ## Machine readable - [Markdown index](https://lantad.co/md): every page on this site is also served as markdown at the same URL plus .md. This page lists all of them, grouped. The home page is /index.md. ## Docs - [How the score works](https://lantad.co/methodology) - [Our crawler's conduct policy and opt-out](https://lantad.co/bot)