How to encrypt and decrypt PDF files? SanPDF teaches you simple operation and fast implementation!

PDF files are now being used more and more widely, but what is PDF?

Pdf (short for Portable Document Format, meaning “portable document format”) is a file format developed by Adobe Systems for file exchange in a manner independent of applications, operating systems, and hardware. PDF image files to PostScript language model, both in what kind of printer can ensure accurate color and precise printing results that will faithfully reproduce the original PDF of each character, color and image.

Let us introduce the advantages of PDF:

The general company’s public documents are delivered to employees in PDF format, because PDF prevents others from inadvertently touching the keyboard to modify the contents of the file.

Then, when we edit the graduation design report with the word and send it to the instructor for viewing, we also recommend using the PDF format. Because the version of the office word may not produce a format disorder, but the PDF does not.

Also, when the document is converted to PDF format, the occupied memory space will be reduced and it will be easier to transfer.

Converting to PDF can avoid incompatibilities and font substitution problems caused by other software, making the document more flexible.

The pages of the software that reads the PDF are relatively simple. It is more convenient for the user to browse the page, and can be enlarged or reduced at will.

PDF format documents can be converted from a good variety of software. Such as office word or Photo Shop can be converted to PDF format.

The PDF format also supports printing and adding comments and more. When reading a document, we can add comments to the content we read while reading, which is convenient and practical.

Then there are the disadvantages of PDF:

Modifications are too inconvenient, avoiding unintentional modifications and hampering normal modifications.

PDF documents can be converted from a variety of software, but it is difficult to convert to other formats, and the format after conversion to WORD is also very reluctant. But the effect of WORD into PDF is much better.

I often encounter the need to have PDF to WORD, using a variety of tools, the effect is often not ideal. Use SanPDF to make it easy and quick to modify the file format.

Due to the characteristics of the PDF document, everyone saves the file as this format, but there is a problem, and the security of the file is particularly critical. In order to keep this PDF file safe, we will set a password for this file, but do you know how to add a password? Let me teach you how to use our product SanPDF, which is fast and free.

1. First, open the browser and start typing our website sanpdf.com, into our product home page, click on the “Download Now” to download our client, then please wait for a while, wait for it to download.

protect-pdf-tool

2. After the download is complete, open the folder you need to install and start installing the SanPDF client.

protect-pdf-tool

3. After the installation is complete, find the location where you installed and open the client of our product.

protect-pdf-tool

4. Open the client, find the “PDF Protect”, click to open it, which is one of our features of this product, which is designed to give an encrypted PDF file.

protect-pdf-tool

5. Open and click the Select button to open the folder, find the important file you need to encrypt and select it (note: it must be a PDF file), then enter a password that you want to encrypt for this file.

protect-pdf-tool

6. Click “encrypted and stored”, and then you can save the encrypted PDF file.

protect-pdf-tool

7. After completing the above steps, click on “Open Directory” to view the encrypted file.

The above explains how to encrypt the PDF file. Next, I will introduce the function of decrypting the PDF file in the SanPDF tool. I hope that it can help everyone and improve your work efficiency and learning efficiency.

If a password for a PDF file was created to protect your own PDF file, but later you want to cancel the file encryption, some friends will only encrypt it without canceling the encryption. What should I do? We still use SanPDF to solve it.

1. Open a browser and enter our website sanpdf.com, then go to the homepage of our products and click “Download Now” to start downloading the client of our products.

unlock-pdf-tool

2. Open the file after the download is complete, begin the installation SanPDF our clients.

unlock-pdf-tool

3. After the installation is complete, find the location where you installed and open our product.

unlock-pdf-tool

4. After entering the client, find the “PDF Unlock”, and click Open.

unlock-pdf-tool

5. Open and click the Select button to find the PDF file you want to decrypt and enter the decrypted password.

unlock-pdf-tool

6. Click “Decrypt and save” to save the PDF file after the decryption.

unlock-pdf-tool

7. When finished, click on “Open Directory” to view the decrypted file.

This is the tool I use SanPDF to introduce, SanPDF use convenient and can save us time, we can use the remaining time to do more meaningful things. And SanPDF is free and very worthy of our use!

The SanPDF tool not only has encryption and decryption capabilities, but also many other features, such as PDF to Word (.doc, .docx), PDF to Excel (.xls, .xlsx), PDF to PPT (.ppt, .pptx), Word to PDF, Excel to PDF, PPT to PDF, and PDF to JPEG, PNG, BMP image, split or merge PDF.

I can’t find my conversion file / Where is my file?

If you have not yet registered your SanPDF account and converted files using the online converter, download the converted file immediately and keep it safe after the conversion is complete. Once the conversion page is closed, you will not be able to download the converted file. If you have already signed up for a SanPDF account, you can log in to your account within 24 hours of the conversion, find the converted file in the conversion history list and download it. Please note! To ensure the security of your files, SanPDF’s servers automatically and permanently delete converted files after 24 hours. Therefore, be sure to download and keep it as soon as possible after the conversion.

SanReader helps you work more efficiently, save more time and give you a colorful life.