Currently supports the following document formats:
- PDF-Documents (Portable document format)
- Office Open XML - documents (DOCX, XLSX, PPTX)
- RTF-Documents (Rich text format)
- Open document format - documents (ODT, ODS, ODP)
- XPS-Documents / OXPS-Documents
- CHM - Compiled HTML help
- MIME (MHTML, EML-mail, etc..)
LaTeX
Document (TeX, BiB)- Old Word document format (DOC)
- HTML / XHTML / HTML5
Spell checking is possible also in PDF and Office documents.