DataNumen PDF Repair

What is the PDF file format?

PDF (Portable Document Format) is an electronic document file format developed by Adobe. It is one of the most common-used formats in computer and mobile phone systems.

Why PDF documents will get corrupted?

There are many reasons that will cause PDF file corruption, including power failure during editing, software bug, virus, hard drive failure, storage media damage, unplugging an external hard drive unsafely, unstable Internet connection when downloading PDF files, etc. To reduce the data loss, it is important to have a PDF repair tool on hand so that whenever PDF corruption occurs, you can use it to repair the damaged file as soon as possible.

Can your PDF recovery tool work in Mac?

Our PDF data recovery tool cannot run on Mac. However, you can still use the following way to repair PDF documents in Mac system:

1. Copy the corrupt PDF document from Mac to a PC/Windows system.
2. Install our tool in the PC/Windows system.
3. Use our recovery software to repair the damaged PDF document.
4. Copy the fixed PDF document back to the Mac system.

What is the difference between the demo version and the full version?

The demo version and the full version use the same recovery engine. You can use the demo version to repair the corrupt PDF file. It will show you a preview of the recovered document, but will not save it.

Is there a free way to repair corrupt or damaged PDF files?

Yes, there are several free ways to repair PDF files, as below:

1. Update Acrobat Reader or Acrobat Professional to the latest version

Sometimes, the PDF file is not corrupt. Instead, the version of your Adobe Acrobat Reader or Acrobat Professional is older than the version of the PDF file. So, you only need to update Adobe Acrobat Reader or Professional to the latest version and open the PDF file again, as follows:

1. Start Adobe Acrobat Reader or Professional.
2. Click Help > Check for updates to check for updates.
3. Follow the instructions to update Acrobat Reader or Professional to the latest version.
4. Re-open the PDF file again.

2. Repair the installation

Sometimes, the installation of Acrobat Reader or Professional is corrupt, which makes you fail to open the PDF file. So, you only need to repair the installation, as follows:

1. Start Adobe Acrobat Reader or Professional.
2. Click Help > Repair Acrobat Installation.
3. Follow the instructions to repair the installation.
4. Re-open the PDF file again.

3. Use different PDF apps

Sometimes, the PDF file is not fully compatible with Acrobat Reader or Professional, so you cannot open it with these PDF readers. However, you can try to use other PDF tools, such as Foxit PDF Reader, to open the file.

4. USE CLOUD DRIVES

Some cloud drives, such as Google Drive and DropBox, also have the built-in function to open PDF files, including damaged files. You can try to open your corrupt PDF file in these apps, and then print or download it as a new error-free file.

If all above methods fail, then you should use our PDF repair tool to repair the PDF file and fix the PDF file corruption.

How long will it take to repair a corrupt PDF file?

It depends on the following two factors:

1. File size.
2. The number of elements in the file.

Normally, it takes several minutes for our repair software to repair a 10MB PDF file.

Do you support to output the recovered data as PowerPoint, Excel or JPG files?

Sorry but currently our tool does not support such a feature.

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