Opening PDF Files
Access PDF documents directly from item detail pages:Find a PDF item
Search for or browse to find items that contain PDF files. These are typically books, documents, or manuscripts.
View available files
On the item detail page, you’ll see a list of available files. PDF files are labeled with their format.
PDFs can be read online by streaming or offline after downloading. Online reading saves bandwidth and storage space.
Reading Interface
The PDF reader provides a clean, distraction-free reading experience:Page Display
- Full-screen view - PDFs display in full screen for maximum reading space
- Page fitting - Pages automatically fit to your screen width
- Zoom support - Pinch to zoom in on text or images
- Pan and scroll - Scroll vertically or swipe horizontally between pages
Navigation Controls
Access controls by tapping anywhere on the page:Top Bar
- Document title display
- Close button to exit reader
- Download button (if reading online)
- Share button
Page Navigation
- Current page number indicator
- Total page count
- Swipe left/right to change pages
- Jump to specific page number
Page Navigation
Move through PDF documents efficiently:Swipe Navigation
- Swipe left - Go to next page
- Swipe right - Go to previous page
- Vertical scroll - Continuous scrolling through pages (when enabled)
Jump to Page
Reading Position
Your reading position is automatically saved:- Kafka remembers which page you’re on when you close the reader
- Return to the document to resume from your last page
- Reading positions sync across devices when signed in
- Works for both online and downloaded PDFs
Automatic Bookmarking
Every time you navigate to a new page, Kafka saves your position. You don’t need to manually bookmark pages.
Zoom and Pan
Examine details in PDF documents:Zoom Controls
- Pinch to zoom - Use two fingers to zoom in or out
- Double tap - Double tap to zoom to 100% or fit to screen
- Zoom limits - Zoom from 50% to 400% of original size
Panning
When zoomed in:- Drag with one finger to pan around the page
- Zoom is maintained as you move between pages
- Reset zoom by double tapping or pinching out
Some PDF files may have restrictions on zoom levels depending on how they were created.
Online vs Offline Reading
Choose how you want to read PDF documents:Online Reading (Default)
- Stream pages - Pages load as you read them
- Save storage - No need to download the entire file
- Instant access - Start reading immediately
- Requires internet - Must be connected to read
Offline Reading
- Download first - Use the download button to save the PDF
- No internet needed - Read anytime, anywhere
- Faster loading - Pages load instantly from local storage
- Uses storage space - File is saved to your device
Performance Tips
For the best PDF reading experience:Large Files
For PDFs over 50MB, downloading for offline reading provides better performance and page loading speed.
Image-Heavy PDFs
Documents with many images or high-resolution scans benefit from offline reading to avoid streaming delays.
Slow Connections
On slower internet connections, consider downloading PDFs first for a smoother reading experience.
Battery Saving
Offline reading uses less battery than streaming as it doesn’t require constant network activity.
Controls and Gestures
Master these gestures for efficient PDF navigation:| Gesture | Action |
|---|---|
| Single tap | Show/hide controls |
| Swipe left | Next page |
| Swipe right | Previous page |
| Vertical scroll | Continuous page scrolling |
| Pinch out | Zoom in |
| Pinch in | Zoom out |
| Double tap | Toggle zoom |
| Two-finger drag | Pan when zoomed |