Amazon Textract

Amazon Textract is AWS's document intelligence service that goes beyond basic OCR to extract structured data from documents using machine learning. It reads printed text, handwriting, tables, and form key-value pairs without requiring templates or custom configuration.

The service includes specialized models for invoices (AnalyzeExpense), identity documents (AnalyzeID), and mortgage documents (AnalyzeLending) that understand domain-specific formats and fields. Each model extracts the specific data types relevant to that document category.

Textract processes documents stored in S3 and delivers structured JSON output with bounding box coordinates and confidence scores for every extracted element. The asynchronous API handles documents up to 3,000 pages as background jobs with SNS notifications on completion. The synchronous API processes single pages in real-time for interactive applications.

Handwriting recognition sets Textract apart from many competitors. It accurately extracts handwritten notes, filled forms, and annotations that appear alongside printed text. Healthcare organizations, financial services firms, and government agencies use this for digitizing paper records where handwriting is common.

The JSON output format includes bounding boxes for every detected element, which is useful for document visualization but requires significant post-processing to feed into LLM or RAG applications that expect plain text. Teams building document AI pipelines often need a transformation layer between Textract output and their downstream systems.