PDF preprocessing for LLMs

Turn PDFs into structured data for LLM consumption

Transform PDFs into structured data that LLMs can actually read — lightning fast, unmatched accuracy, and API-ready. Convert documents into clean JSON, text, or images for your AI workflows using the PDF SDK in .NET, Java, C, or Python.

  • Process up to 1,000 pages completely free

  • No time limits — no credit card required

Turn PDFs into structured data for LLM consumption

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Trusted by 6,000+ industry leaders

Maintain spatial relationships and formatting

Pdftools' technology transforms how you work with complex documents. Our proprietary approach preserves critical structural elements within PDFs, maintaining the spatial relationships and formatting that conventional extraction methods miss.

Maintain spatial relationships and formatting

Extract tabular data and line items with superior accuracy.

By delivering perfectly preserved data, Pdftools enables your Large Language Models to use data with unprecedented accuracy—particularly for challenging elements like tabular data, recurring sections, and line items that typically confound standard solutions.

Extract tabular data and line items with superior accuracy.

Convert PDFs into clean, structured data

PDFs weren’t designed for LLMs. Whether you're building a RAG system, pre-processing documents for embeddings, or just need structured JSON from PDFs—Pdftools delivers more accurate, scalable, and cost-efficient conversions than generic tools.

We support the technologies you rely on

What does Pdftools offer businesses?

  • LLM-optimized data extraction from PDF to JSON, text, and images

  • Extracts text, layout, tables, and images

  • Convert PDFs to JSON with schema consistency

  • Plug into LLM workflows or IDP systems

  • Use Pdftools on-premise or in your cloud

  • Secure and compliant with data governance

What our customers are saying

Customer story

Central conversion solution ensures quality of more than 90,000 documents daily

Suva faced challenges with PDFs from different source systems and standards, requiring a centralized conversion solution for efficient document management.

Customer story

The first ISO PDF/A-compliant electronic website archiving system

The system archives websites in 1:1 PDF/A format, detecting changes and creating new versions when needed, while offering customizable page numbering.

Customer story

Meeting preparation using annotations in PDF Viewer SDK

To streamline development, the project aimed to create a cross-platform annotation solution compatible with standard web technologies and the Cordova framework.

Join thousands of businesses who trust Pdftools

Swiss precision meets decades of PDF expertise. From shaping industry standards to developing high-performance PDF technology, companies across industries use our solutions to process millions of documents daily.
Process documents swiftly with the highest quality output
Process documents swiftly with the highest quality output
Get expert guidance and support from the Pdftools team at every step
Get expert guidance and support from the Pdftools team at every step
Choose the plan that fits your needs or get a custom quote
Choose the plan that fits your needs or get a custom quote