Fix Adobe Acrobat iPad Highlighting Stopping at Words or Lines
Question details
The user cannot highlight text continuously across multiple words or lines using an Apple Pencil or finger on an iPad Pro.
- Product
- Adobe Acrobat
- Device & OS
- iPad Pro
- Scenario
- Highlighting text within a PDF document using touch input or an Apple Pencil.
- Observed behavior
- The text selection abruptly stops at the end of a single word and refuses to span across multiple words or continue onto the next line.
Determine if your PDF document contains actual digital text or if it is a scanned image, as this directly dictates how highlighting tools behave.
Perform OCR on Scanned Documents
Use this solution if your PDF is a scanned image. Acrobat struggles to detect text continuity on images without Optical Character Recognition (OCR).
When a document is scanned, it is saved as a flat image. Without a hidden text layer, highlighting tools cannot snap to sentences or paragraphs properly, causing the highlight to fail or stop abruptly.
Launch Adobe Acrobat on your device, open the problematic PDF, and navigate to the 'Scan & OCR' tool from the main menu.
Select the 'Recognize Text' option and choose 'In this file'. Ensure the document language is set correctly.
Once the OCR process is complete, select the Highlight tool and try dragging your Apple Pencil across multiple lines to confirm the issue is resolved.
Restart Acrobat and Test a Standard PDF
Use this method to rule out temporary software glitches or issues isolated to a specific corrupted document.
Highlight and Annotate PDFs Smoothly with WPS Office
Avoid highlighting glitches by using WPS Office for iPad. WPS provides a highly responsive PDF reader and editor that flawlessly tracks your Apple Pencil or finger across selectable text, offering a seamless annotation experience.
- 1. Download WPS Office: Install WPS Office from the App Store on your iPad and launch the application.
- 2. Open your PDF: Tap on the 'Files' tab and select the target PDF document from your local iPad storage or cloud drive.
- 3. Access annotation tools: Tap 'Annotate' in the top menu bar, then select the 'Highlight' tool.
- 4. Highlight seamlessly: Drag your Apple Pencil or finger across the text. The smart selection engine will smoothly track across multiple words and lines.
Frequently Asked Questions
Why does my Apple Pencil only highlight one word at a time in PDFs?
This typically occurs when the application cannot detect continuous text boundaries. It is most commonly caused by the document being a scanned image rather than a standard text-based PDF.
How can I tell if my PDF is a scanned document?
Try zooming in closely on the text. If the edges of the letters look pixelated or blurry, and you cannot place a blinking text cursor between individual characters, it is a scanned image.
Can I highlight text in a PDF without using OCR?
Yes. Most PDF editors offer a 'Draw' or 'Freehand Marker' tool in their annotation settings. This allows you to manually paint a transparent color over the text like a physical highlighter, bypassing the need for text recognition.
