Nutrient — Deterministic document platform | PDF SDK and document APIs

# Nutrient — The deterministic document platform > SDKs, cloud APIs, and workflow agents for document work that can't run on a guess. Nutrient turns messy, high-stakes documents into structured, auditable data, and powers high-fidelity viewing, editing, generation, conversion, OCR, redaction, and eSignatures across web, mobile, and server. Deterministic by design: same output every run, confidence scores, and clear exceptions where AI is involved. Deploy in the cloud, self-hosted, or air-gapped. Use any AI model, your own, or none. ## How to navigate this site - **Per-SDK guides indexes** live at `/guides/<sdk>/llms.txt` — each lists the topic indexes available for that SDK. - **Per-SDK API references** live at `/api/<sdk>/llms.txt` — same shape, for the SDK’s API surface. - Each per-SDK index points at **per-topic sub-indexes** named `/guides/<sdk>/llms-<topic>.txt` (and the matching `/api/<sdk>/llms-<topic>.txt`). Available topics vary per SDK — fetch the per-SDK index to see what each SDK covers. Topic URLs that aren’t listed in a per-SDK index do not resolve (404), so the per-SDK index is the authoritative signal of available topics for that SDK. - For **bulk content ingestion**, see [/llms-full.txt](/llms-full.txt). ## Document AI and agent surfaces - [Document AI overview](/document-ai/) — The map of Nutrient’s AI products: extract, govern, and review document data on deterministic infrastructure. - [Data Extraction API](/api/data-extraction-api/) — Turn PDFs, scans, and images into structured JSON, with confidence scores and clear exceptions where AI is involved. No-signup playground on the page; free tier is 5,000 credits per month, no credit card. - [Data Extraction guides](/guides/dws-data-extraction/llms.txt) — Guides index for the Data Extraction API. - [AI governance](/document-ai/governance/) — How extraction and agent workflows stay auditable: what is deterministic, what is AI, and how exceptions route to humans. - [MCP Serv