Do not rely on a computer's hardware configuration, operation system and created documents application. As long as the user install a free PDF reader software, it can be read on Windows 98 operating system created by apple PDF, also can be in pure English version of the operating system with characters printed the PDF files. File protection. PDF files can be encrypted, control sensitive information access, prevent PDF form changing or printing, so it can be used to transmit knowledge property rights of electronic files.

How to Remove PDF Password

Of course, described above is just an ideal protection effect, in fact the similar protection measures are easy to be cracked, especially print, editor of the limit is scanty protection, if you set up a very complex password, it is able to protect the safety of the document, because the crack exhaustion methods, such as the need to use violence to crack password, it will need to spend more time. PDF file is really a secure way to distribute your file. Most people know that because of great non-editable feature, but you also need to be aware of PDF security is an important part to assure this. Occasionally, as to this point, you are disabled to copy or print or even open the file. So, if you want to copy and print these locked files, what can you do? Obviously, if we have to copy, print and share our PDF files, we need to remove PDF password firstly. Then how to break PDF password?

Cracking PDF software can easily remove limit of the PDF document copying, printing, Actually, you can send secured PDF file as an attachment to yourself via Gmail, then you can view your file as HTML and copy or print in browser. But for a bunch of files and large file which size is over upload upper limit, this method is also cumbersome and not works to break PDF encryption. So you have to remove the PDF password with the help of the PDF Password remover. Removing the protective measures of PDF document and extract the pictures, the text and other information from PDF file, to make sure we can correctly extract the word from, copy, print, edit the basic requirements of PDF documents.

PDF files safety protection measures

The protection measures of PDF files security is so much, you can use the password to restrict user to open, printing and edit PDF, also can use certificate encryption PDF only let the user to open the designated list, enterprise users can also based on the server, Adobe LiveCycle Rights Management ES safety system or FileOpen (www.fileopen.com), protection system to enhance safety of the document, and electronic books provider can also through the DRM (Digital Rights Management, content full Digital copyright encryption protection technology) technology to prevent copies of the document.

How to Set PDF Password safety

Need to set up the safety protection of the PDF documents, we suggest using Adobe Acrobat operation, on the one hand, because Adobe Acrobat is more safe and reliable, and on the other hand, there are many third party plugin supporting Adobe Acrobat. Usually, the individual user use password protection document, open the PDF file you want to protect, click on the "advanced" menu, pointing to "security", select "use password encryption" can choose to encrypt the current PDF files and to set the password protection. What you need to pay attention to is the password including open a file password and restrict user print, editing functions password, so, no password can not open the file, and if only install function limit password, everyone can open the file, but only know the password can print, edit the document.

How to Extract Text from PDF

Most of friends want to extract text from PDF document, Extracting text from PDF document is a difficult problem, According to the different task, and tools are different. it you are mac user, the PDF converter for mac may be your best choice Using PDF Image Extraction can simply choose to extract Image of PDF files, it can extract the pictures of all documents, and it can be saved as user specified format (support BMP, JPEG, PNG, TGA, TIFF, GIF format). And people who need to have a large number of PDF files, it have to use Some PDF Images Extract, this software allows users to specified folder or file batch processing, the software will automatically in all PDF files in the folder to create a PDF file and folder of the same name, the extracted pictures can be saved as JPG, BMP, PNG, TGA, TIF, GIF, PCX, PBM/PPM format.

The Development trend of PDF

At present, PDF is promoting in the network application of the publishing industry, the famous Wanfangdata party data network center has been used network to provide users with the original PDF of the same journal files, make users deeply feel the convenience of PDF. In the journal publishing industry, many teachers need to convert PDF to PowerPoint, so the free PDF to PowerPoint converter can be solve their problem. the habit of reviewing on the Internet has started to touch the PDF and using Acrobat Reader. With the popularity of Internet, extensive use of the electronic mail, the demand will gradually increase, then PDF may like Doc for users and also are familiar with doc, more and more of the editorial department will use PDF files for electronic communication.