{"product_id":"n8n-chat-webhook-q-a-from-uploaded-pdfs-with-openai","title":"n8n Chat Webhook: Q\u0026A from Uploaded PDFs with OpenAI","description":"\u003ch3\u003eAsk questions about your uploaded PDFs—directly from an n8n website chat webhook\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow creates a public chat webhook for your website where visitors can upload a \u003cstrong\u003ePDF, TXT, or Markdown\u003c\/strong\u003e file and ask Q\u0026amp;A questions. Using \u003cstrong\u003eOpenAI\u003c\/strong\u003e, the agent answers \u003cstrong\u003ebased on the uploaded document text\u003c\/strong\u003e and keeps that content in conversation memory for follow-up questions.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReceives chat messages\u003c\/strong\u003e via a public webhook, with \u003cstrong\u003estreaming responses\u003c\/strong\u003e and \u003cstrong\u003efile upload\u003c\/strong\u003e support.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetects attachments\u003c\/strong\u003e: checks whether the visitor attached a file and determines if it’s a \u003cstrong\u003ePDF\u003c\/strong\u003e or a \u003cstrong\u003etext\/Markdown\u003c\/strong\u003e document.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtracts and prepares content\u003c\/strong\u003e: extracts text from the uploaded file (or flags it as unreadable\/unsupported) and truncates it to the \u003cstrong\u003efirst 20,000 characters\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnables follow-up Q\u0026amp;A\u003c\/strong\u003e: stores the extracted document text as \u003cstrong\u003ehidden messages\u003c\/strong\u003e in the chat conversation memory, so later turns can reference it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnswers with OpenAI\u003c\/strong\u003e: uses an OpenAI chat model to respond strictly from the document content, streaming the reply back to the chat. If only a file is sent, it can generate a \u003cstrong\u003eshort summary\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLet customers upload product manuals and ask questions about specific sections.\u003c\/li\u003e\n  \u003cli\u003eEnable internal teams to upload policy documents and run Q\u0026amp;A during support conversations.\u003c\/li\u003e\n  \u003cli\u003eTurn uploaded documentation (TXT\/Markdown\/PDF) into an interactive help assistant for your SaaS.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eNodes\/logic: \u003cstrong\u003eif\u003c\/strong\u003e, \u003cstrong\u003eset\u003c\/strong\u003e, \u003cstrong\u003eswitch\u003c\/strong\u003e, \u003cstrong\u003esticky note\u003c\/strong\u003e, \u003cstrong\u003en8nn8n-nodes-langchainagent\u003c\/strong\u003e, and \u003cstrong\u003eextract from file\u003c\/strong\u003e.\u003c\/li\u003e\n  \u003cli\u003eCore behavior: file text extraction + \u003cstrong\u003e20,000-character\u003c\/strong\u003e truncation + OpenAI chat answering with conversation memory.\u003c\/li\u003e\n  \u003cli\u003eSetup requirements: add an \u003cstrong\u003eOpenAI API credential\u003c\/strong\u003e (or swap the chat model node), publish the workflow, copy the \u003cstrong\u003eproduction chat webhook URL\u003c\/strong\u003e, and configure the chat widget with file uploads.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":46359774036147,"sku":"N8N-22144","price":52.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/eKno2rzUPWy99AaIsqgDC_zbwUOsit.png?v=1793697757","url":"https:\/\/buyflowscripts.com\/products\/n8n-chat-webhook-q-a-from-uploaded-pdfs-with-openai","provider":"N8N Commerce","version":"1.0","type":"link"}