Get your documents ready for AI
Turn PDFs, Word docs, spreadsheets, Markdown and HTML into clean, chunked .txt files, with a token count on every chunk. Our free browser tools keep your files on your device, and the builder stores nothing.
One file free. Packs start at $9 once. Nothing stored.
Drag & Drop Upload
Upload live-text PDF, DOCX, TXT, CSV, Markdown, and HTML files in seconds. Process multiple documents at once with progress tracking.
AI-Optimized Processing
Specialized text cleaning, smart formatting, and perfect chunking designed for AI agent knowledge bases.
Instant Results
Download your perfectly formatted knowledge base files instantly. No waiting, no data stored on our servers.
Why Knowledge Builder Pro
Works With Any AI Platform
Built for ChatGPT file chat, Projects, and plugins, Claude Projects, and anything that accepts a document upload. One tool, every platform.
No Files Stored, Ever
Your documents are processed in-memory and never saved to our servers. Download your files and they're gone from our system immediately.
Automatic Size Optimization
Smart chunking keeps every file within platform limits. No manual splitting, no guesswork — just upload and go.
Guides for getting documents ready for AI
Free, practical walkthroughs on document prep, chunking, and getting retrieval right.
ChatGPT & Claude Knowledge Files
Formats, sizes and limits for ChatGPT and Claude knowledge files.
Document Prep, Chunking & RAG
Turn messy documents into clean, retrieval-ready chunks.
Tool Comparisons & Alternatives
How Knowledge Builder Pro compares to the alternatives.
ChatGPT & Claude Build Guides
Step-by-step builds for real use cases.
Try it on one of your own files
Works with ChatGPT file chat and Claude Projects. One file free, no account. Packs start at $9 once.