# Introduction to parsing HTML files with Docling
Docling
Docling simplifies document processing, parsing diverse formats — including HTML — and providing seamless integrations with the gen AI ecosystem.
## Supported file formats
Docling supports multiple file formats..
- Advanced PDF understanding
PDF
- Microsoft Office DOCX
DOCX
- HTML files (with optional support for images)
HTML
### Three backends for handling HTML files
Docling has three backends for parsing HTML files:
1. HTMLDocumentBackend Ignores images
2. HTMLDocumentBackendImagesInline Extracts images inline
3. HTMLDocumentBackendImagesReferenced Extracts images as references