✅ 100% Free & Open Source

RAGFlow — Free AI Knowledge Base & Document Q&A (2026)

Build an AI that answers questions from your documents. RAGFlow processes PDFs, Word files, images, and web pages — ask anything and get accurate answers.

📥 Download RAGFlow — Free AI Knowledge Base & Document Q&A (2026)

Click to download directly from the official website. No ads, no bundled software.

🔧 How to Install

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Step 1: Install Docker Desktop from docker.com

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Step 2: Open Command Prompt or Terminal

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Step 3: Type: docker run -d -p 80:80 infiniflow/ragflow — press Enter

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Step 4: Wait for download to complete (first time 3-5 minutes)

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Step 5: Open browser to http://localhost:80 — create your admin account

✨ Key Features

✓ Deep document understanding with AI
✓ Supports PDF, Word, Excel, images, web pages
✓ Intelligent chunking for accurate retrieval
✓ Citation-backed answers — see the source
✓ Multiple knowledge bases for different topics
✓ Self-hosted — your data stays private

🎯 How to Use

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Step 1: Log in and click 'Create Knowledge Base' — give it a name

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Step 2: Upload your documents (PDF, Word, Excel, images, web pages — all supported)

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Step 3: Wait for RAGFlow to process and index your documents (shows progress bar)

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Step 4: Click 'Start Chat' to ask questions about your documents

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Step 5: Type a question like 'Summarize the contract terms' — AI answers based on your files

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Step 6: To update knowledge: upload more documents anytime — the knowledge base auto-indexes them

Turn your documents into an AI-powered question-answering system

RAGFlow creates a searchable AI knowledge base from your documents. Upload PDFs, Word files, spreadsheets, images, or web pages, and the AI will read, understand, and index them. Then ask questions in plain language and get precise, citation-backed answers drawn directly from your content.

FAQ

How is RAGFlow different from just searching documents? Regular search finds keywords. RAGFlow understands meaning — it reads your documents and answers questions conversationally, even when the answer spans multiple sections or requires reasoning. Every answer includes citations so you can verify the source.

What types of documents can I upload? PDF, Microsoft Word, Excel, PowerPoint, images (with OCR), plain text, Markdown, web pages (by URL), and more. The system automatically extracts and processes content from each format.

Is my data private? Yes. The self-hosted version runs entirely on your computer or server. No documents are sent to external services. Your data stays fully under your control.

Do I need an external AI API key? RAGFlow needs an AI model to generate answers. You can connect an API key from OpenAI, Anthropic, or use local models through Ollama for a completely offline setup.

💡 100% Free & Safe

All download links go directly to the official project websites. We never host or modify any files. No registration, no ads, no spyware.