Why PDFs break LLMs — and what clean Markdown fixes
A PDF that looks perfect to a human often falls apart the moment a model reads it. Here's what goes wrong, and why converting to clean Markdown first makes downstream AI far more reliable.
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El blog de markitdown.ai reúne notas prácticas sobre cómo convertir PDF, archivos de Office, escaneos y páginas web en Markdown para modelos, canalizaciones RAG y agentes: los fallos que vemos y cómo los resuelve la conversión.
A PDF that looks perfect to a human often falls apart the moment a model reads it. Here's what goes wrong, and why converting to clean Markdown first makes downstream AI far more reliable.
Retrieval quality is decided long before the vector database. This is a pre-processing checklist for turning messy source documents into clean, chunk-ready text.
Plain text throws away the structure a model could have used. Markdown keeps it, at almost no token cost — and that changes how reliably an LLM can reason over your content.
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