Supported formats
Docling can parse various documents formats into a unified representation (Docling Document), which it can export to different formats too — check out Architecture for more details.
Below you can find a listing of all supported input and output formats.
Supported input formats
| Format | Description |
|---|---|
| DOCX, XLSX, PPTX | Default formats in MS Office 2007+, based on Office Open XML |
| DOC, XLS, PPT | Legacy binary Office formats (97–2004); requires LibreOffice |
| ODT, ODS, ODP | OpenDocument Format for text documents, spreadsheets, and presentations |
| EPUB | Electronic Publication format for e-books |
| Markdown | |
| AsciiDoc | Human-readable, plain-text markup language for structured technical content |
| LaTeX | Scientific document preparation system |
| HTML, XHTML | |
| CSV | |
| PNG, JPEG, TIFF, BMP, WEBP | Image formats |
| WAV, MP3, M4A, AAC, OGG, FLAC | Audio formats (requires asr extra — see Processing audio and video) |
| MP4, AVI, MOV | Video formats — audio track is extracted and transcribed (requires asr extra and ffmpeg) |
| WebVTT | Web Video Text Tracks format for displaying timed text |
| BoxNote | Box Notes collaborative note format |
Schema-specific support:
| Format | Description |
|---|---|
| DocLang XML | XML format following DocLang; supported extensions: .dclg, .dclg.xml, and generic .xml with a <doclang> root element |
| DocLang archive | Zipped DocLang bundle including page images; supported extension: .dclx |
| USPTO XML | XML format followed by USPTO patents |
| JATS XML | XML format followed by JATS articles |
| XBRL XML | XML format for business and financial reporting following XBRL standard |
| Docling JSON | JSON-serialized Docling Document |
Supported output formats
| Format | Description |
|---|---|
| HTML | Both image embedding and referencing are supported |
| Markdown | |
| JSON | Lossless serialization of Docling Document |
| DocLang XML | XML serialization following DocLang; CLI output format: doclang |
| Text | Plain text, i.e. without Markdown markers |
| Doctags | Markup format for efficiently representing the full content and layout characteristics of a document |
| WebVTT | Web Video Text Tracks format for displaying timed text |
| DocLang archive | Zipped DocLang bundle including page images; CLI output format: dclx |
| Chunks (JSONL) | Chunked document output for RAG pipelines; configurable via --chunks-type, --chunks-max-tokens, --chunks-tokenizer |