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How to Open a Corrupted PDF File? 4 Ways

Quick Answer:

To open a corrupted PDF file, first duplicate the file so the original remains untouched. Then check its size, download or request a fresh copy, and test the duplicate in another PDF reader. If the PDF still will not open, restore an earlier version or use a repair tool that matches the file’s sensitivity.

A PDF that will not open is not necessarily corrupted. An incomplete download, a faulty reader installation, a password prompt, or a zero-byte attachment can produce a similar symptom. Identifying the cause before attempting repair gives you the best chance of recovering the document without damaging the only available copy.

Part 1. Why Won't the PDF Open?

Use the error and the file’s behavior to choose the right first step.

What you seeMost likely causeBest first actionWhat not to do
The file size is 0 KBThe file contains no recoverable dataDownload it again or ask the sender for another copyDo not buy a repair tool for the empty copy
The file is much smaller than expectedThe download or transfer was interruptedObtain a clean copy from the sourceDo not overwrite the source file
One reader fails, but another opens the PDFReader compatibility, cache, or installation problemSave a new copy from the working readerDo not describe the file as repaired until you verify every page
Every reader rejects the same duplicateThe PDF structure may be damagedRestore a backup or try a reputable repair methodDo not repeatedly save over the original
The PDF asks for a passwordThe file is encrypted, not corruptedEnter the correct open password or contact the ownerDo not use a corruption-repair tool
The PDF opens but the text cannot be selectedThe pages may be scanned imagesUse OCR after confirming every page displays correctlyDo not expect OCR to repair file structure
The attachment was unexpected or looks suspiciousThe file may be unsafe rather than damagedScan it and verify the sender before opening itDo not upload or open it merely to test it

If the file is confidential, start with local methods: obtain a clean copy, try another desktop reader, and check an existing backup. Online repair services require you to upload the document to another company’s server.

Also Read: PDF File Errors and Solutions

How to Open a Corrupted PDF File

The following are some of the most effective solutions to open a corrupted PDF file;

  • Try Using a Different Reader

If you find that you are unable to open the file using Adobe Reader, this doesn’t automatically mean that the file is corrupt. There could be a problem with the reader. This is why the first thing we recommend before attempting any other solution is to try using a different PDF application.

There are many other solutions that you could try, we will recommend UPDF for you since it is free to use if you only need to read PDF. Just download UPDF and open the PDF to fix the corrupted issues.

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Use UPDF PDF reader to open currpted PDF file
  • Restore the File to a Previous Version

Since this problem can be caused by issues in the computer system, you can try to restore the file to a previous version. Windows has a feature that automatically stores previous versions of the files you create in anticipation of this very problem.

Use the following steps to access the previous version of your PDF file;

Step 1: Find the corrupted PDF file and right-click on it

Step 2: From the options that appear, select "Properties"

Step 3: In the "Properties" window that opens, click on the "Previous Versions" tab and select the version of the file you would like to restore.

Step 4: Click "Restore" and this older version will replace the corrupted document.

Restore to old version
  • Fix Adobe Acrobat Reader

Adobe Acrobat is usually a very reliable PDF reader, but it is not without its issues and sometimes these issues can make it difficult to read the PDF file. So, if you are still unable to open the file even after restoring it to a previous version, try the following steps to repair Adobe Acrobat Reader;

Step 1: Before anything else, make sure that the version of Adobe Acrobat Reader you are using is the most updated. To do that, open Adobe Acrobat Reader and then click on "Help > Check for Updates." If an update is available, install it.

Step 2: Once the update process is complete, go to "Help" again, and this time select "Repair Installation". This will allow the program automatically check for any errors and apply any repairs.

Repair installation in Adobe Reader
  • Use an Online tool to Repair the File

You can also choose to use one of the many online PDF repair tools to repair the corrupted file. Most work similarly, but for this tutorial, we will show you how to use PDF2GO.

Step 1: Go to the website of PDF2GO on any browser to access the repair tool.

Step 2: Click on the "Choose File" button to upload the corrupted file

open pdf2go repair pdf

Step 3: Then simply click on the "Save Changes" button at the bottom and PDF2GO will begin repairing the file immediately. You should be able to download the file once the repair is complete.

download repaired PDF file by pdf2go

A Productive and Delightful PDF Reader and Editor

It is usually the tool you choose to create or read the PDF file that may cause problems like this one. It is therefore very important that the PDF reader and editor you choose be a reliable, effective, and easy-to-use solution. One of the few PDF readers and editors that fits this description is UPDF.

cross platform updf

Here's a list of some of the features that you can expect to enjoy if you choose UPDF;

  • UPDF provides a streamlined and intuitive PDF reading experience. When reading the document, you can choose a page layout that you desire or even choose a dark mode.
  • It is also one of the best ways to edit PDF. You can easily edit the text on the document by choosing to change the font size and color. You can also use the built-in image editor to edit any images on the PDFs.
  • UPDF also has numerous PDF annotation features for easier collaboration. These features allow you to add comments, stamps, and stickers to the document. You can even add a valid signature to the document.
  • UPDF can also be used to convert scanned PDF files to various other editable formats including Word, Excel, PowerPoint, or even images.
  • You can also use it to organize the PDF pages by quickly adding, rotating, replacing, extracting, and rearranging the pages on the document to suit your purposes.
  • UPDF facilitates the easy sharing of PDF documents, allowing the recipient to see the file as is and avoid file corruption problems.

Advantages of Using UPDF

  • It is a very simple tool to use. All tools are easily accessible whether you are editing, converting, or annotating the file.
  • You don't need to leave the program to edit the document.
  • It is 100% safe to use and unlikely to corrupt the PDF file.
  • You can access your PDF file on numerous devices as UPDF is accessible on Windows, Mac, iOS, and Android devices.

If you want to know more about UPDF, you can download UPDF via the below button, and watch the below review video.

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FAQs

Q1: How Do I Fix a Damaged PDF File that Won't Open?

The two best options to fix a damaged file are to restore a previous version of the file or use an online PDF repair tool as we have seen above. When both solutions are not an option for you, then the only viable solution is to recreate the file.

Q2: Can I repair a PDF by renaming its file extension?

No. Renaming does not repair the file. Changing .pdf to another extension only changes the filename; it does not rebuild PDF objects or restore missing data.

Q3: How Do I Make an Unreadable PDF Readable?

If the file is password protected, then you will need to enter the password that was used to lock the document.
If on the other hand, the file is a scanned document, you may need UPDF using OCR to convert it into a readable and editable format, the you can enjoy your journey.

Conclusion

All in all, in case of any inevitable destruction caused by a corrupted PDF file, UPDF is the safe and sensible choice for users that secure the environment of opening, reading, and editing documents. Besides, the features of UPDF are diverse, and all of them give reliable outcomes for your files according to your needs. What are you waiting for? Download the app today, and enjoy the amazing journey!

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