when dealing with PDF documents that contain sensitive information, we need to ensure that the contents of the file are not accessed by unauthorized persons. Whether it is a business contract, financial report, or personal document data, there is a risk of being viewed by unintended objects by direct mail or mobile storage devices. Through the PDF encryption function, you can set a password for the document to effectively control the access rights of the document. This approach does not change the original format and content of the document, but also establishes basic security for important data. This article will share three tools to set a password for PDF files: HeSoft Doc Batch Tool Smallpdf, iLovePDF, introduce the operation method of these tools, analyze the advantages and disadvantages.
Effect Preview
before processing, the file can be opened directly:
after processing, you need to enter the password correctly to open:
1. HeSoft Doc Batch Tool
Advantages:
- the file is encrypted locally, and the processing process does not require networking, which can ensure the security of file information and password.
- Batch processing, can be a large number of files to complete the encryption, fast and efficient.
- The page is set up simple, no operation difficulty, ordinary office staff can quickly learn to master.
- Functional diversity, in addition to pdf encryption, but also a collection of many commonly used file processing functions, convenient and efficient.
Disadvantages:
- this feature requires software to be installed on your computer before you can use it.
Operation steps:
1. Open 【 HeSoft Doc Batch Tool ], click [PDF Tools] in the left column, and then click [2, PDF Add Password Protection]].
2. Click [Add Page] in the upper right corner to add pdf documents that need to be added with passwords.
3. Click [File Open Password] and enter the password in the input box here.
4. After the storage location is set, the operation processing can be started. After the processing is completed, the following interface will appear, which means that the previously imported pdf has been encrypted.
2. using Smallpdf file encryption
advantages:
- open the web page where the Smallpdf tool can be used without downloading and installing software to avoid occupying computer memory.
Disadvantages:
- online encryption tools need to upload files to a web page before processing, which takes a certain amount of time and is time-consuming for users with a large number of files.
- After the file is uploaded to the web page, there may be a certain risk of privacy disclosure.
- Batch processing requires membership and is more suitable for users who only need to encrypt a small number of files.
Operation steps:
1. Use the browser to open the Smallpdf online web page, select [PDF Encryption], and enter the page shown in the figure below.
2. Click the icon in the middle to upload the pdf file to be encrypted to the web page. After uploading, click [To be converted] on the right side of the file name, and a password window will pop up on the web page.
3. Enter the set password and repeat it. Click [PDF Encryption] to start the conversion. After waiting for the conversion to be completed, click [Download] on the right side of the file to save the encrypted file locally.
3. the use of iLovePDF PDF protection features
advantages:
- web page processing online, do not wait to download and install software, directly open the web page in the browser, you can use this function.
Disadvantages:
- online processing tools for file content and file password information security is difficult to fully guarantee.
- For users who need to encrypt a large number of files, it may take a lot of time to upload and download a large number of files.
- The efficiency and stability of file processing and file transfer are affected by network quality.
- Not batch processing, only one pdf file can be encrypted at a time.
Operation steps:
1. Open the web page where the iLovePDF is located in the browser and select [Protect PDF File] to enter the following interface.
2. Click the red icon [Select PDF File] to upload the PDF file to be encrypted to this web page.
3. After uploading, fill in the file opening password to be set in the sidebar on the right side of the webpage. After filling in twice, click [PDF Encryption]].
4. After the encryption is completed, save the file locally.
Summary
this paper introduces three methods to add open password to the pdf file, method one using the local processing of professional software, can handle batch files, and the operation is simple, efficient processing, and the software also has many common file batch processing functions. Method three 2. the use of web online tools, although eliminating the inconvenience of downloading and installing software, but also has the shortcomings of security may be insufficient, the transmission of files consumes more time.