Why Can't I Open PDFs After Highlighting Text in Adobe Reader?

Have you ever encountered the frustration of trying to open a PDF file and discovering that it appears corrupted or unreadable, following an attempt to highlight text or make annotations? If so, you're not alone. This issue frequently arises due to specific technical reasons, particularly when certain fonts aren't embedded in your PDF file. This article will explore common reasons for these issues and provide solutions to help you resolve them.

Understanding the Root Cause

The main reason for encountering issues opening PDFs after highlighting text is typically the usage of fonts that are not embedded in the file. When you open a PDF using Adobe Acrobat Reader DC, you are not using the Adobe PDF maker, which is specifically designed to embed all necessary fonts and ensure the document remains fully functional after any modifications, such as highlighting.

Solution: Use Adobe Acrobat Pro

Adobe Acrobat Pro is a more robust tool compared to Adobe Reader. It can handle a wide variety of document manipulations and ensures that all necessary elements, including fonts, are embedded. If you frequently need to make edits to your PDFs, it is advisable to use Adobe Acrobat Pro to both create and edit your documents.

Preventive Measures and Troubleshooting Steps

Even if you're using Adobe Acrobat Pro, you can still take steps to prevent issues with your PDF files. Here are a few tips to ensure your documents remain accessible and functional:

Check for Corrupt Files: If your PDF file becomes unreadable, try opening it again. If necessary, save it as a new file to avoid overwriting the original. Sometimes, the corruption is only temporary, and saving the file again resolves the issue. Install an Antivirus: Ensure your computer has a reliable antivirus program installed to protect against viruses that might corrupt your documents. Regularly update your antivirus software to maintain optimal protection. Run a Virus Scan: Periodically scan your computer for viruses. This can help you identify and remove any potential threats that might be affecting your PDF files. Save Your Work Regularly: Practice good file management by regularly saving your PDFs. This reduces the risk of losing unsaved work due to unexpected issues.

Conclusion

While using Adobe Reader to highlight text and make annotations in PDFs is generally straightforward, issues can arise, particularly if certain fonts are not embedded in the file or if the document becomes corrupted. By using the correct tools and taking preventive measures, you can minimize these risks and ensure your PDFs remain accessible and functional.

For those who frequently need to edit PDFs, investing in Adobe Acrobat Pro can offer significant benefits, as it provides a more comprehensive and reliable solution for document manipulation. Additionally, having a robust antivirus and practicing good file management habits can greatly improve the overall efficiency and reliability of your document handling process.