pdf tools

Situation 1: I have some very important PDF files and I would like to add password to them to prevent other people opening them. How can I lock PDF files with high security password. Sitiation 2: I shared some PDF files with others, however I don't hope...

When we print a copy of Word document, we need to click and open the document and then click "Print" command button. It is not difficult to deal with several copies of Word documents, however if there are a batch of Word files, for example, hundreds of...

Situation: I have a lot of images and would like to print them out. However, I really feel boring to click the mouse again and again, so is there any method to batch print images? Answer: It is boring and troublesome to click the mouse over and over again...

Usually when we print a PDF file, we always need to click and open the PDF file, and then click "Print" command button to print the PDF file. It's not difficult to do the same thing if there are just a few of PDF files. However, you will feel boring and...

Situation 1: I have a lot of PDF files, and now I would like to change all the PDF files' names to an uniform form, such as "Author + file name", namely the author name is in the beginnig position and the file name follows the author name. There are so...

Situation 1: I have made some PDF files and I would like to add some watermarks on it to protect someone copying my PDF files. Is there any way to add watermark to PDF by myself? Situation 2: I want to add some interesting pictures to PDF as backgroud,...

Recently I just found that PDF files can be made to a flip book which has a turning page effect by some softwares. I was amazed at this new tips. I have been worrying about how to make the reading more interesting and attractive, and now I found the best...