Chunkr is an open-source data ingestion API service focused on document layout analysis, OCR, and chunk processing, transforming documents into formats suitable for RAG and LLM. It supports PDF, DOC, PPT, and XLS files. The service can structure text, tables, images, and handwritten content, providing data support for AI and machine learning applications. It is maintained by Lumina AI Inc. and offers a free trial and pricing plans.