PDF (Portable Document Format) is a file format which is used to present and share documents over the network. Features like inline images and text-formatting are also included in this file format. You can share PDF file over the network without changing original structure of the file. You can read and create PDF document by using Adobe Acrobat. Adobe PDF 1.0 was the first version and later versions include 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.7 Extension level 3, 1.7 Extension level 5 and 1.7 Extension level 8. Early PDF versions do not support hyperlinks because of which it was not useful on the internet. But now, by using latest versions you can create e-brochures, e-books, business presentations, photo albums, etc.
- Adobe Acrobat is a commercial tool by which you can create PDF file easily.
- You can compress PDF file to save space and by reducing size it becomes easy to share the PDF file over the network, it consumes less time.
- A PDF file can be digitally signed for authentication purpose or can be encrypted for security purpose. Acrobat PDF provides standard security which is based on password protection.
- PDF file may also contain interactive objects which include video, images, flash animation, from fields, etc.
PDF files can be merged into a single file and can also be split into multiple PDF files.
For steps, read: Combine PDF Files
PDF files can get corrupted as these files are prone to corruption. There are various reasons for corruption which include hard disk drive failure, virus infection, software and hardware malfunction, abrupt system shutdown and many others. All these factors make your PDF file inaccessible. You may get different types of error while reading or opening corrupted PDF file. These errors include: there was an error opening this file, file is corrupt or damage, file is not readable, etc.
Luckily, if you have backed up your PDF files earlier, you can restore them from the BKF file. But if the BKF file is itself corrupted or invalid, you cannot restore your PDF files from it. Or if you have not backed up the PDF files, you are left with only one solution: a third-party recovery tool. You can easily recover data from your corrupted PDF file by using third-party recovery tool. You may get various third-party tools by searching on internet.
SysInfoTools PDF Recovery software enables you to recover data from severely corrupted PDF file. It also recovers images, graphics, texts, tables, etc. Data can be recovered in two modes: Standard and Advanced modes. It is supported by all the Windows versions which include Windows 97, 2000, 2003, 2008, ME, NT, XP, Vista and 7. You can try its free demo version which is available on the company’s website.