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How to Fix Missing OCR and Highlight Text in Scanned PDFs on iPad
Question details
The user is unable to highlight text in a scanned PDF on their iPad due to a missing or malfunctioning OCR (Optical Character Recognition) feature.
- Product
- PDF Editor / App for iPad
- Device & OS
- iPadOS
- Scenario
- Attempting to highlight text in a scanned PDF document using a Premium subscription.
- Observed behavior
- The OCR or text-recognition feature is missing or not functioning, preventing the user from selecting and highlighting text in scanned documents.
Ensure your iPad is connected to the internet and verify that you are logged into the correct Apple ID associated with your Premium subscription.
Restore Premium Subscription and Update App
Premium features like OCR can sometimes disappear if the app loses sync with your Apple ID subscription status or if the application version is outdated.
A common cause of missing premium features on iPadOS is a temporary desynchronization between the app and Apple's subscription servers. Updating the app and manually restoring your purchase usually resolves this issue.
Open the App Store on your iPad, search for your PDF editor, and tap 'Update' if a newer version is available.
Launch the PDF application and navigate to the 'Account', 'Profile', or 'Settings' tab.
Tap on the 'Restore Purchases' button to synchronize your active Premium subscription with your Apple ID.
Close the application completely from the iPad app switcher, restart your iPad, and reopen the app to apply the refreshed premium status.
Manually Run OCR and Check Document Restrictions
If the subscription is active, the PDF might be restricted or you may need to manually trigger the text recognition tool before highlighting.
Perform OCR and Highlight Scanned PDFs Seamlessly with WPS Office
WPS Office provides highly accurate OCR technology natively on your iPad. As a powerful all-in-one suite, it lets you easily convert scanned images into selectable text, making highlighting and annotating a breeze.
- 1. Install WPS Office: Download and open WPS Office on your iPad from the App Store.
- 2. Open your scanned document: Open your scanned PDF document from your iPad's local storage or WPS Cloud.
- 3. Run the OCR tool: Tap on the 'Tools' menu at the bottom, navigate to the PDF editing options, and select 'OCR' to extract and recognize the text.
- 4. Highlight the recognized text: Once the text is recognized, switch to the 'Annotate' tab, choose the 'Highlight' tool, and drag over the text to highlight it.
- 5. Save your annotated PDF: Tap 'Save' to preserve your highlights and annotations directly to the PDF file.
Frequently Asked Questions
Why can't I highlight text in my scanned PDF?
Scanned PDFs are essentially flat images. Without running Optical Character Recognition (OCR) first, the application cannot distinguish the text from the background image, which prevents you from selecting or highlighting it.
Do I need an active internet connection to use OCR on iPad?
It depends on the specific application. While some basic text recognition runs locally on the iPad, advanced OCR processing often requires a stable internet connection to communicate with cloud servers for higher accuracy.
How can I tell if my PDF is password-protected against editing?
Usually, a restricted PDF will have editing, OCR, and annotation tools greyed out or completely hidden. You can verify this by checking the document properties or security settings within your PDF viewer; if editing is restricted, OCR will be disabled.
What should I do if my Premium features suddenly disappear?
First, ensure you are logged into the exact Apple ID used for the purchase. Navigate to the application's settings and tap 'Restore Purchases'. If the issue persists, restarting your iPad and updating the application usually resolves these synchronization bugs.
