Fix PDF Characters Rendering Incorrectly in Acrobat Reader on Android
Question details
Specific text, such as numbers and letters, fails to display properly in a PDF document on a mobile device.

- Product
- Acrobat Reader
- Device & OS
- Android
- Scenario
- Viewing an important document, such as a travel certificate, on an Android mobile application.
- Observed behavior
- Some characters appear partially rendered, distorted, or missing, while the remaining text displays normally.
Before proceeding, take a clear screenshot of the incorrectly rendered text so you have a record of the issue for troubleshooting or support requests.
Test the PDF with an Alternative Viewer
Opening the file in a different application helps determine if the rendering issue is caused by the document itself or a bug in your current PDF reader.
Different PDF applications use different rendering engines. If a file displays poorly in one app but perfectly in another, the issue lies with the original app's software rather than a corrupted document.
Open the Google Play Store and download a reliable alternative application like WPS Office.
Open your Android device's file manager and navigate to the folder containing your PDF document.
Tap on the PDF file and choose your newly installed PDF viewer from the 'Open with' prompt to check if the text renders correctly.

Update Acrobat Reader and Android OS
Installing the latest software updates ensures that known bugs related to font and character rendering are patched.
Submit a Bug Report to Adobe Support
If the rendering issue only occurs in Acrobat Reader despite updates, reporting the bug directly helps developers fix the specific display problem.
Read and Render PDFs Flawlessly with WPS Office
If your current PDF app struggles to display text and fonts correctly on Android, switch to WPS Office. It features a highly compatible rendering engine that ensures all characters, images, and formatting display exactly as intended.
- 1. Download WPS Office: Search for WPS Office in the Google Play Store and install the application on your Android device.
- 2. Open the PDF module: Launch the WPS Office app and tap on the 'PDF' tab on the home screen.
- 3. Select your document: Browse your local device storage and tap on your travel certificate or PDF file to open it.
- 4. View without errors: Scroll through your document and verify that all numbers and letters are now rendering correctly.

Frequently Asked Questions
Why are some letters missing or distorted in my mobile PDF?
This generally happens when the fonts used to create the document are not properly embedded in the PDF file, or if your specific mobile PDF reader has a software bug preventing it from processing the character encoding correctly.
Will clearing the app cache fix PDF text display issues?
It can help if temporary files have become corrupted. You can clear the cache by navigating to Android Settings > Apps > your PDF reader > Storage, and tapping 'Clear Cache'. Afterwards, reopen the app to see if the text renders properly.
How do I know if the PDF file itself is damaged?
The easiest way to check for file damage is to open the PDF on a completely different device, such as a desktop computer. If the characters are still missing or corrupted on a PC, the file was likely exported incorrectly and needs to be regenerated by the sender.




