Folio-Offline Document Reader

Folio is a private, offline document reader for Android. Open everyday files from your device and continue reading where you left off—without creating an account or sending your documents to a server.

Supported formats
- PDF
- DOCX Word documents
- XLSX spreadsheets
- PPTX presentations
- TXT text files
- Markdown files

Designed for comfortable reading
- Fast, on-demand PDF page rendering
- PDF zoom and reading-position restoration
- Clean, reflowed views for Word documents and presentations
- Horizontally scrollable spreadsheet and document tables
- Styled Markdown headings, lists, quotes and code blocks
- Recent documents for quick reopening
- Light and dark themes

Private by design
Folio works offline and uses Android's system file picker. It only opens files you choose. The app has no account, advertising, analytics, cloud service or internet permission.

Use Android's Open with menu to open supported files in Folio, or share the original document from the reader using the system share sheet.

Folio focuses on reading. It does not edit documents, and complex Office layouts may be shown as simplified, reflowed content rather than exact desktop-style pages.