Instant AI Chat
Chat with powerful AI models directly in your browser. No data leaves your device, 100% private and secure.
Processing on Device
Instant AI Chat
Hello! I'm your local AI assistant. How can I help you today?
Initializing Engine... · Drop PDF or image to attach
Everything You Need for Private AI Chat
100% Private & Offline
All AI inference runs inside your browser via WebGPU. Your messages, files, and conversations never touch a server.
Multiple AI Models
Choose from Gemma 4B, Llama 3.2, or Phi-3 Mini — each optimized for different needs like speed, accuracy, or creativity.
PDF & Image Context
Attach PDFs and images directly in the chat. The AI reads your documents and describes your images without any uploads.
Voice Input
Speak your questions hands-free with continuous speech recognition. Perfect for accessibility and multitasking.
How It Works
Simple, fast, and secure. Get your file processed in 3 easy steps.
Pick Your Model
Select an open-source AI model and download it once. It's cached in your browser for instant offline use next time.
Add Context (Optional)
Attach PDFs, images, or just type — the AI uses everything you provide to give you accurate, relevant answers.
Chat Privately
Your GPU powers the AI response. No API keys, no subscriptions, no data leaving your device — ever.
Why Choose PDFaiGen?
We are building the future of document processing — focusing on privacy, speed, and design.
100% Privacy Guaranteed
No cloud uploads. Your files are processed entirely on your device using WebAssembly technology.
Lightning Fast
Zero upload time. Zero download time. Instant processing powered by your own hardware.
Easy to Use
Simple drag-and-drop interfaces designed for efficiency. No accounts or sign-ups required.
Common Use Cases
See how others are using this tool to save time and improve workflows.
Research & Analysis
Upload research papers or reports as PDFs and ask the AI to summarize, compare, or extract specific data points.
Confidential Work
Discuss sensitive business strategies, legal documents, or personal projects with zero risk of data leaks.
Learning & Study
Ask the AI to explain complex concepts, quiz you on topics, or break down difficult material in simple terms.
Creative Writing
Brainstorm ideas, draft content, refine your writing style, or get feedback — all without sending your work to the cloud.
Code Assistance
Get help with code snippets, debugging, and architecture decisions while keeping your intellectual property completely local.
Image Understanding
Attach screenshots or photos and ask the AI to describe, analyze, or answer questions about what it sees.
How to Use the Private AI Chat
PDFaiGen's Instant AI Chat brings state-of-the-art language models directly into your browser using WebGPU. You get all the power of AI assistants like ChatGPT — without sending a single word to the cloud.
Select and Download a Model
Click the model selector in the top-right to choose between Gemma 4B (best accuracy), Llama 3.2 (balanced), or Phi-3 Mini (fastest). Click 'Setup Engine' to download it once — it's then cached locally in your browser for instant reuse.
Attach Files (Optional)
Click the paperclip icon or drag-and-drop a PDF or image onto the chat input. PDFs are text-extracted and injected as context. Images are referenced so the AI can describe or answer questions about them.
Type or Speak Your Message
Type your question in the input box, or click the microphone to use voice input. The AI supports continuous speech recognition — it keeps recording until you click Stop.
Read the AI Response
The model streams its answer token by token, rendered in real-time in the chat bubble. You can copy any response with the copy button that appears on hover.
Continue the Conversation
The full conversation history is sent with each message, so the AI remembers context. Ask follow-up questions or switch topics freely. Clear the history anytime with the trash icon.
Pro Tips
- For best results with PDFs, ask specific questions like 'What is the conclusion of section 3?' rather than broad requests.
- If the AI seems slow, switch to Phi-3 Mini — it's the lightest model and responds fastest on most hardware.
- Voice input works best in a quiet environment. Say your full sentence before pausing — the AI waits for natural speech breaks.
Common Issues
Model download is slow?
Model files range from 77MB to 2.2GB. They are downloaded once and cached permanently. Switch to Flan-T5 Small or Phi-3 Mini for a much faster first-time setup.
Microphone not working?
Ensure your browser has microphone permission for this site. Speech recognition requires Chrome, Edge, or Safari — it is not supported in Firefox.
Your Privacy is Our Priority
Unlike other online tools, PDFaiGen processes your files directly in your browser. No file uploads, no server data breaches.
Zero Uploads
Files never leave your device. All processing happens locally in your browser memory.
End-to-End Private
Since no data is sent to any server, your sensitive documents remain completely private.
Works Offline
Once loaded, our tools work without an internet connection. No data usage required.
Start Chatting for Free
No sign-up, no API key, no data leaving your browser. Just powerful AI, running privately on your device.
No credit card required • No installation • 100% Private