Fadocx

All-in-one document viewer: PDF, Office, spreadsheets, presentations, code files & OCR text extraction — fully offline, zero tracking, open-source.

Features:

Documents, Spreadsheets & Presentations

• PDF via native pdfrx engine — page navigation, text selection & extraction, invert mode, text reader mode, and spotlight search (animated dim+punch-hole effect for found terms)
• Microsoft Office: DOCX, DOC, XLSX, XLS, PPT, PPTX
• OpenDocument: ODT, ODS, ODP
• Other: RTF, CSV
• All Office and OpenDocument formats powered by the embedded LibreOffice Kit for desktop-class rendering
• Apache POI handles native spreadsheet parsing on Android
• Sheets & CSV: Sticky row numbers on left, sticky column headers (A, B, C…), tap to highlight row/column, copy cell values, zoom in/out, fullscreen mode
• TXTs & Code: Adjustable font picker (Ubuntu, Mono), word wrap, copy mode, fast theme toggle

Images, Audio & Video

• Images: PNG, JPG, GIF, WEBP, BMP, SVG — view with real frame extraction from files
• Video: MP4, MKV, AVI, MOV, WEBM, FLV, WMV, 3GP, MXF — video preview with frame thumbnails
• Audio: MP3, M4A, AAC, FLAC, WAV, WMA, OGG, OPUS, AIFF

Code Files

• Code/Data: Java, Python, Shell, HTML, JSON, XML, Markdown, Log
• Syntax highlighting with color-coded rendering
• Adjustable font size, word wrap, and reading mode

Intelligent OCR & On-Device AI

• Extract English text from images via Tesseract OCR + OpenCV preprocessing
• Dual PSM modes and automatic rotation correction for accurate results
• All AI runs entirely on-device — no cloud, no uploads, complete privacy
• More OCR languages planned for future releases

Library with Category Folders

• Files are auto-organized into categories (PDF, Docs, Sheets, Slides, Images, Video, Audio, Code, Scans, Other) with fast filters and sorting
• Files are stored in Fadocx's private app storage — no reliance on public folders
• Browse by category with dedicated chip filters
• Search by file name or type
• Sort by latest, oldest, largest, or smallest
• Switch between grid and list views
• Rich dynamic thumbnails — thumbnails are generated by extracting real document content and rendering it in a readable preview, giving you a genuine look at each file before opening

File Management

• Import: Browse your device or use the file picker to import documents into Fadocx's private storage. Files are automatically sorted into the correct category folder
• Rename: Change file names directly in-app with extension preservation
• Duplicate: Create copies with auto-numbered names ("copy", "copy 2", etc.)
• Export: Save files to Downloads or choose a custom location
• Delete: Soft-delete with trash bin and restore option
• Multi-select: Long-press to enter selection mode for batch operations
• File info: View detailed metadata including size, type, dates, and extracted text