Leonard 
This workflow corresponds to n8n.io template #4151 — we link there as the canonical source.
This workflow follows the Chainllm → Chat Trigger recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "qthXGkJCm1YAAQpW",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "AI SEO Readability Audit: Check Website Friendliness for LLMs",
"tags": [
{
"id": "JkpR8IEIpOrc2x6l",
"name": "Leonard van Hemert",
"createdAt": "2025-05-17T14:14:16.649Z",
"updatedAt": "2025-05-17T14:14:16.649Z"
}
],
"nodes": [
{
"id": "ea4c49eb-5a9d-4de9-acc7-3eef90b11f29",
"name": "When chat message received",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-340,
-140
],
"parameters": {
"public": true,
"options": {
"title": "\ud83d\ude80 AI SEO Readability Checker",
"subtitle": "Test how AI-friendly your website is for search engines like ChatGPT & Perplexity \u2013 built by [Leonard van Hemert](https://nl.linkedin.com/in/leonard-van-hemert)",
"responseMode": "lastNode",
"inputPlaceholder": "https://example.com"
},
"initialMessages": "Hi! \ud83d\udc4b \nSend your website link and I\u2019ll check how AI-friendly it is for tools like ChatGPT and Perplexity. Let\u2019s go! \ud83d\ude80"
},
"typeVersion": 1.1
},
{
"id": "0ede3abb-3cad-4e9a-bc8c-79d8eac06fe6",
"name": "Get HTML from Website",
"type": "n8n-nodes-base.httpRequest",
"position": [
100,
-140
],
"parameters": {
"url": "={{ $json.url }}",
"options": {
"timeout": 10000
},
"jsonHeaders": "{\n \"User-Agent\": \"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)\",\n \"Accept-Language\": \"nl-NL,nl;q=0.9,en-US;q=0.8,en;q=0.7\"\n}",
"sendHeaders": true,
"specifyHeaders": "json"
},
"retryOnFail": true,
"typeVersion": 4.2,
"alwaysOutputData": true
},
{
"id": "96d8c97a-8d7b-41fb-a109-d56e34d7dff1",
"name": "Sanitize Website URL",
"type": "n8n-nodes-base.code",
"position": [
-120,
-140
],
"parameters": {
"jsCode": "return [\n {\n json: {\n url: (() => {\n let input = $json.chatInput.trim().toLowerCase();\n if (!input.startsWith('http')) input = 'https://' + input;\n return input;\n })()\n }\n }\n];"
},
"typeVersion": 2
},
{
"id": "2b8a702e-b141-4f71-9e8f-2caa69cfad80",
"name": "Extract HTML Features",
"type": "n8n-nodes-base.code",
"position": [
320,
-140
],
"parameters": {
"jsCode": "const html = $json.data || '';\n\n// Remove scripts, styles, and extract visible text\nconst cleanedText = html\n .replace(/<script[\\s\\S]*?<\\/script>/gi, '')\n .replace(/<style[\\s\\S]*?<\\/style>/gi, '')\n .replace(/<[^>]*>/g, '') // strip all HTML tags\n .replace(/\\s+/g, ' ')\n .trim();\n\n// Preview: first 400 chars of visible content\nconst previewText = cleanedText.slice(0, 400);\n\n// Lowercased text for language-agnostic JS block detection\nconst lowerText = cleanedText.toLowerCase();\n\n// Common JS-related blocking messages (EN + NL + DE)\nconst jsBlockIndicators = [\n 'enable javascript',\n 'javascript is required',\n 'please enable javascript',\n 'javascript moet ingeschakeld zijn',\n 'schakel javascript in',\n 'javascript erforderlich'\n];\n\n// Scan for any of the indicators\nconst jsWarningDetected = jsBlockIndicators.some(phrase => lowerText.includes(phrase));\n\nreturn [\n {\n json: {\n visibleTextLength: cleanedText.length,\n previewText,\n hasH1: /<h1[\\s>]/i.test(html),\n hasH2: /<h2[\\s>]/i.test(html),\n hasH3: /<h3[\\s>]/i.test(html),\n hasMetaDescription: /<meta[^>]+name=[\"']description[\"']/i.test(html),\n hasOpenGraph: /<meta[^>]+property=[\"']og:/i.test(html),\n hasStructuredData: /<script[^>]*type=[\"']application\\/ld\\+json[\"']/i.test(html),\n hasNoscript: /<noscript[\\s>]/i.test(html),\n jsWarning: jsWarningDetected,\n robotsTxt: $('Sanitize Website URL').first().json.url.replace(/\\/$/, '') + '/robots.txt'\n }\n }\n];"
},
"typeVersion": 2
},
{
"id": "58591741-7896-4f0f-a5d6-a16efccdf4a3",
"name": "AI SEO Analysis",
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"position": [
540,
-140
],
"parameters": {
"text": "=You are an expert in AI SEO analysis and AI search engine accessibility.\n\nYou are evaluating a website\u2019s readability for LLM-based tools like ChatGPT, Perplexity, and Google AI Overviews. The website's raw HTML was fetched *without JavaScript execution*, simulating how LLMs typically see pages.\n\n---\n\n### \ud83e\uddfe Technical Scan Summary\n\n**Visible content (no JS):**\n- Text length: {{ $json.visibleTextLength }} characters\n- Preview: \"{{ $json.previewText }}\"\n\n**Detected features:**\n- Structured Data (JSON-LD): {{ $json.hasStructuredData }}\n- Meta Description: {{ $json.hasMetaDescription }}\n- Open Graph Metadata: {{ $json.hasOpenGraph }}\n- Headings: H1: {{ $json.hasH1 }}, H2: {{ $json.hasH2 }}, H3: {{ $json.hasH3 }}\n- `<noscript>` fallback present: {{ $json.hasNoscript }}\n- JavaScript-blocking warning found: {{ $json.jsWarning }}\n\n---\n\n### \ud83c\udfaf Your task:\nEvaluate the AI-readability of this website and return:\n\n1. An **AI Readability Score (0\u201310)**\n2. A **brief summary** of the current state (2\u20134 sentences)\n3. Up to **5 actionable recommendations** to improve visibility and accessibility for AI search engines\n\n\ud83d\udca1 If the text length is below 300 or the `JavaScript-blocking warning found` is true, clearly state that the site may not be accessible to LLMs due to JavaScript dependency.\n\n\u26a0\ufe0f **Important:**\nYou must also **tell the user** to check their `robots.txt` file manually, and provide this exact clickable link: \n\ud83d\udc49 [{{ $json.robotsTxt }}]({{ $json.robotsTxt }}) \nExplain they must ensure bots like `GPTBot`, `ChatGPT-User`, and `Google-Extended` are **not blocked**.\n\nDo not perform this check yourself \u2014 just inform the user to do it.\n\n---\n\n\ud83c\udf81 Format your response like this:\n\n**Score:** x/10 \n**Summary:** ... \n**Recommendations:**\n- ...\n- Check your robots.txt file at [{{ $json.robotsTxt }}]({{ $json.robotsTxt }}) to ensure AI bots are allowed.",
"promptType": "define"
},
"typeVersion": 1.6
},
{
"id": "080e40e2-bfb3-42df-8f92-ac1379135aad",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-380,
20
],
"parameters": {
"color": 4,
"width": 740,
"height": 700,
"content": "# \ud83d\ude80 AI SEO \uac00\ub3c5\uc131 \uac10\uc0ac \uc6cc\ud06c\ud50c\ub85c\uc6b0\n\n**\ubaa9\uc801:** \uc774 \uc6cc\ud06c\ud50c\ub85c\uc6b0\ub294 \uc6f9\uc0ac\uc774\ud2b8\uc758 HTML\uc744 \ubd84\uc11d\ud558\uc5ec ChatGPT \ubc0f Perplexity\uc640 \uac19\uc740 \ub300\ud615 \uc5b8\uc5b4 \ubaa8\ub378(LLM)\uc774 \uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8\ub97c \uc2e4\ud589\ud558\uc9c0 \uc54a\uace0 \ud06c\ub864\ub9c1\ud560 \ub54c\uc758 \uac00\ub3c5\uc131\uacfc \uc811\uadfc\uc131\uc744 \ud3c9\uac00\ud569\ub2c8\ub2e4.\n\n**\uc791\ub3d9 \ubc29\uc2dd:**\n1. \ucc44\ud305\uc5d0 \uc6f9\uc0ac\uc774\ud2b8 URL\uc744 \uc785\ub825\ud569\ub2c8\ub2e4.\n2. \uc6cc\ud06c\ud50c\ub85c\uc6b0\uac00 \uc6d0\uc2dc HTML\uc744 \uac00\uc838\uc635\ub2c8\ub2e4(\uc790\ubc14\uc2a4\ud06c\ub9bd\ud2b8 \ubbf8\uc2e4\ud589 \ud06c\ub864\ub7ec\ub97c \uc2dc\ubbac\ub808\uc774\uc158).\n3. \uc8fc\uc694 SEO \uae30\ub2a5(\ud14d\uc2a4\ud2b8 \ub0b4\uc6a9, \uc81c\ubaa9, \uba54\ud0c0 \ud0dc\uadf8 \ub4f1)\uc744 \ucd94\ucd9c\ud569\ub2c8\ub2e4.\n4. LLM(OpenAI\ub97c \ud1b5\ud574)\uc774 \uc774\ub7ec\ud55c \uae30\ub2a5\uc744 \ubd84\uc11d\ud558\uc5ec \ub2e4\uc74c\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4:\n - AI \uac00\ub3c5\uc131 \uc810\uc218(0-10)\n - \uc0ac\uc774\ud2b8\uc758 AI \uce5c\ud654\uc131 \uc694\uc57d\n - \uc2e4\ud589 \uac00\ub2a5\ud55c \ucd94\ucc9c \uc0ac\ud56d\n - `robots.txt` \ud655\uc778 \ub9ac\ub9c8\uc778\ub354\n\n**\uc124\uc815 \uc694\uad6c \uc0ac\ud56d:**\n- **OpenAI \uacc4\uc815 \ubc0f API \ud0a4:** \"OpenAI Chat Model\" \ub178\ub4dc\uc5d0\uc11c \uc790\uaca9 \uc99d\uba85\uc744 \uad6c\uc131\ud569\ub2c8\ub2e4.\n- **n8n \uc778\uc2a4\ud134\uc2a4:** \uc774 \uc6cc\ud06c\ud50c\ub85c\uc6b0\ub294 \ud074\ub77c\uc6b0\ub4dc \ub610\ub294 \uc790\uccb4 \ud638\uc2a4\ud305\ub41c \ubaa8\ub4e0 n8n \uc778\uc2a4\ud134\uc2a4\uc5d0\uc11c \uc2e4\ud589\ub429\ub2c8\ub2e4.\n\n**\uc0ac\uc6a9 \ubc29\ubc95:**\n1. \"OpenAI Chat Model\" \ub178\ub4dc\uac00 API \ud0a4\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\ub294\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4.\n2. \uc6cc\ud06c\ud50c\ub85c\uc6b0\ub97c \ud65c\uc131\ud654\ud569\ub2c8\ub2e4.\n3. \"When chat message received\" \ud2b8\ub9ac\uac70\uac00 \uc81c\uacf5\ud558\ub294 \ucc44\ud305 URL\uc744 \uc5fd\ub2c8\ub2e4.\n\n**\ucee4\uc2a4\ud130\ub9c8\uc774\uc81c\uc774\uc158:**\n- **LLM \ubaa8\ub378:** \"OpenAI Chat Model\" \ub178\ub4dc\uc5d0\uc11c \ubaa8\ub378\uc744 \ubcc0\uacbd\ud569\ub2c8\ub2e4.\n- **\ubd84\uc11d \ud504\ub86c\ud504\ud2b8:** \"AI SEO Analysis\" \ub178\ub4dc\uc5d0\uc11c \ud504\ub86c\ud504\ud2b8\ub97c \uc218\uc815\ud569\ub2c8\ub2e4.\n\n\ud83d\udd17 *\uc124\uc815 \ubc0f \ucee4\uc2a4\ud130\ub9c8\uc774\uc81c\uc774\uc158\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc740 n8n.io\uc758 \ud15c\ud50c\ub9bf \uc124\uba85\uc744 \ucc38\uc870\ud558\uc138\uc694.*"
},
"typeVersion": 1
},
{
"id": "a737c2cb-1d6c-4e69-9d92-c7177c42049a",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
360,
260
],
"parameters": {
"width": 540,
"height": 460,
"content": "# **\ud83d\ude80 Leonard van Hemert\uac00 \uac1c\ubc1c\ud588\uc2b5\ub2c8\ub2e4** \n\n\uc774 **AI SEO \uac00\ub3c5\uc131 \uac10\uc0ac** \uc6cc\ud06c\ud50c\ub85c\uc6b0\ub97c \uc0ac\uc6a9\ud574 \uc8fc\uc154\uc11c \uac10\uc0ac\ud569\ub2c8\ub2e4! \ud83c\udf89 \n\n\uc774 \uc6cc\ud06c\ud50c\ub85c\uc6b0\ub294 \uc0ac\uc6a9\uc790\uac00 AI \ub3c4\uad6c\uac00 \uc6f9\uc0ac\uc774\ud2b8\ub97c \uc5b4\ub5bb\uac8c '\ubcf4\ub294\uc9c0' \uc774\ud574\ud558\ub3c4\ub85d \ub3d5\uace0, AI \uce5c\ud654\uc131\uc744 \uac1c\uc120\ud558\uae30 \uc704\ud55c \uc2e4\ud589 \uac00\ub2a5\ud55c \ud1b5\ucc30\uc744 \uc81c\uacf5\ud558\uae30 \uc704\ud574 \ub9cc\ub4e4\uc5b4\uc84c\uc2b5\ub2c8\ub2e4. \n\n\uc774\uac83\uc774 \uc720\uc6a9\ud558\ub2e4\uace0 \uc0dd\uac01\ub418\uba74, LinkedIn\uc5d0\uc11c \uc800\uc640 **\uc5f0\uacb0**\ud558\uc138\uc694. \uadf8\ub9ac\uace0 \uc81c \ucd5c\uc2e0 AI \ubc0f \uc790\ub3d9\ud654 \ud504\ub85c\uc81d\ud2b8\uc5d0 \ub300\ud55c \uc5c5\ub370\uc774\ud2b8\ub97c \ubc1b\uc73c\uc138\uc694! \n\n\ud83d\udd17 **LinkedIn\uc5d0\uc11c \uc800\ub97c \ud314\ub85c\uc6b0\ud558\uc138\uc694**: [Leonard van Hemert](https://www.linkedin.com/in/leonard-van-hemert/) \n\n\uc800\ub294 **n8n \ucee4\ubba4\ub2c8\ud2f0**\uc758 \uc9c0\uc6d0\uc5d0 \uc9c4\uc2ec\uc73c\ub85c \uac10\uc0ac\ub4dc\ub9ac\uba70, \uc5ec\ub7ec\ubd84\uc774 \uc774 \uc6cc\ud06c\ud50c\ub85c\uc6b0\ub97c \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\ud558\uace0 \uac1c\uc120\ud558\ub294\uc9c0 \uae30\ub2e4\ub9b4 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4! \ud83d\ude80 \n\n\ucd5c\uc801\ud654 \uc990\uac81\uac8c \ud558\uc138\uc694, \n**Leonard van Hemert** \ud83d\udca1"
},
"typeVersion": 1
},
{
"id": "7228e3be-1ef7-4f5a-bcb0-2a9299d53cfe",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
628,
80
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o",
"cachedResultName": "gpt-4o"
},
"options": {
"temperature": 0.3
}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
}
],
"active": true,
"settings": {
"callerPolicy": "workflowsFromSameOwner",
"executionOrder": "v1",
"executionTimeout": 300
},
"versionId": "9e18a350-a243-4368-b3d3-746a55bceb24",
"connections": {
"AI SEO Analysis": {
"main": [
[]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI SEO Analysis",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Sanitize Website URL": {
"main": [
[
{
"node": "Get HTML from Website",
"type": "main",
"index": 0
}
]
]
},
"Extract HTML Features": {
"main": [
[
{
"node": "AI SEO Analysis",
"type": "main",
"index": 0
}
]
]
},
"Get HTML from Website": {
"main": [
[
{
"node": "Extract HTML Features",
"type": "main",
"index": 0
}
]
]
},
"When chat message received": {
"main": [
[
{
"node": "Sanitize Website URL",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
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openAiApi
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About this workflow
This workflow is designed for SEO specialists, content creators, marketers, and website developers who want to ensure their web content is easily accessible, understandable, and indexable by Large Language Models (LLMs) like ChatGPT, Perplexity, and Google AI Overviews. If…
Source: https://n8n.io/workflows/4151/ — original creator credit. Request a take-down →
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