GEO extractability score
Is your passage quotable by an AI?
Six criteria measured on a passage: length, standalone sense, question-shaped heading, verifiable figures, entity naming, sentence length. The score says which to fix first.
Tools
Free tools, and the ones I actually use.
The NOKARIS tools are free, need no signup, and keep nothing. Below them, the toolkit I genuinely open on engagements — with what each one is good for, and what it does not tell you.
NOKARIS tools
NOKARIS tools
Visibility and AI
The tools that extend my offers: they measure what decides your presence in Google and inside generative engine answers.
AI agent production cost
The quadratic model everyone misses.
Context is re-sent every turn: input cost grows as n(n+1)/2, not n. Add silent retries and the naive estimate turns out optimistic by a factor of three to five.
Google SERP preview
Measured in pixels, not characters.
Google truncates by width, not character count: a 55-character title in caps overflows where 70 lowercase fit. The preview renders title and description with the real cut.
Structured data generator
JSON-LD ready to paste.
LocalBusiness, Organization or FAQPage. Markup does not lift a page, but it tells the engine which entity you are — the base layer of AI visibility.
llms.txt generator
Six questions, a valid file.
The file to drop at the root of your domain: who you are, what you sell, which pages matter, and what you allow generative engines to do.
robots.txt analyser for AI
Training or citation: the costly distinction.
Eleven crawlers checked. Blocking GPTBot (training) and blocking OAI-SearchBot (live citation) are nothing alike: the second removes you from answers while protecting nothing more.
Utilities
Everyday tools, no signup and no collection. Everything is computed in your browser.
Word and character counter
Words, characters, sentences, reading time.
Words, characters with and without spaces, sentences, paragraphs, unique words, and both silent and read-aloud timing.
Password generator
Cryptographic draw, entropy shown.
Adjustable length and character sets, ambiguous characters excluded by default. The draw uses crypto.getRandomValues, never Math.random.
QR Code generator
PNG with no watermark, no expiry.
Encodes your content directly: no redirection service, so no code that stops working the day a provider shuts down.
Text case converter
Ten conversions, accent-safe.
UPPERCASE, lowercase, title, sentence, alternating, inverse, kebab-case, snake_case, camelCase and PascalCase. Accents handled as letters.
What your connection reveals
IP address, data centre, TLS.
Your public IP and your HTTP and TLS versions, read same-origin on this domain: unlike the usual "what is my IP" sites, your address is handed to no third party.
JSON formatter and validator
Indent, minify, validate — with the real error.
The native engine error message with the exact position, plus structure statistics. Depth says more about a JSON than its size.
More tools are coming, and I would rather publish them than announce them. If you are looking for one that does not exist — or exists badly in French — tell me: it is the best way to decide what comes next.
The toolkit
What I open at the start of an engagement.
All free, all better than anything I would rewrite. A tool that is already excellent does not need one more copy — it needs someone to say what it is genuinely good for.
Indexing
- Google Search Console
- The only source that tells you what Google actually knows about your site. Always start here: how many pages indexed, how many excluded, and why. If a large share is excluded, no extra article will change anything.
- Bing Webmaster Tools
- Underrated because people look at Bing market share. Its index feeds Copilot and has fed ChatGPT search — it matters more for AI visibility than for direct traffic.
- Screaming Frog SEO Spider
- Free up to 500 URLs, which covers most SME sites. A full crawl is the starting point of any serious technical diagnosis: redirects, click depth, orphan pages, canonicals.
Rendering and performance
- PageSpeed Insights
- Read the field data (CrUX), not the lab score. The lab measures one machine; the field measures your real visitors, on their phone and their network. The two often diverge, and the field is what counts.
- WebPageTest
- For when PageSpeed flags a problem without naming it. Full loading waterfall, choice of location and connection quality, before/after comparison. Harder to read, far more precise.
Structured data
- Rich Results Test
- What Google understands from your markup and what it intends to do with it. This is the test that counts when the goal is a rich result in the search pages.
- Schema Markup Validator
- Strict validation against the schema.org specification, without the filter of what Google needs. Useful when your markup also has to be understood by generative engines, which read different subsets.
Generative engines
- llmstxt.org
- The proposed specification, at the source. Short, readable in ten minutes, and more reliable than the blog posts paraphrasing it.
Tools show symptoms. Not what to fix first.
Search Console will tell you pages are excluded, PageSpeed that your LCP is poor. Neither will tell you which of the two costs you more, or in what order to tackle them. That is what SEO Foundation and AI Visibility are for.