Docling: IBM's Open-Source, MIT-Licensed Document Parsing Standard Library Built on Structured JSON
Docling (IBM Research Zurich, now governed by the Linux Foundation AI & Data, MIT license, v2.100.0 released 2026-06-09) is an open-source document parsing standard library with structured JSON (DoclingDocument) as its core output. It supports PDF, DOCX, PPTX, XLSX, HTML, EPUB, Apple Pages, video (MP4/AVI/MOV with ASR transcription and keyframes), audio (WAV/MP3), email (EML/MSG), ODF, and XBRL financial reports, with a swappable-stage pipeline parser (pure CPU or GPU-accelerated), VlmPipeline option (GraniteDocling 258M VLM), MCP server and API server (docling-serve), and native integrations with LangChain, LlamaIndex, Crew AI, and Haystack.