Batch removal of PDF document property information: author, title, subject, and keyword cleanup methods

The author, title, subject, keywords, and other information in PDF document properties are often automatically written by the generating software, which may not match the file content and may not be suitable to retain when sharing externally or archiving. This article explains how to use HeSoft Doc Batch Tool to batch remove PDF document property information, and illustrates the effect through screenshots before and after processing, helping users quickly clean metadata from multiple PDFs and reduce manual repetitive operations.

In office document circulation, PDF is often regarded as the "final version" file, but the final version does not mean there is no hidden information. Many PDFs automatically write document properties when they are generated, such as title, author, subject, keywords, creation date, modification date, and generating program. This information is collectively referred to as PDF metadata. It does not appear directly on the page like the main text, but it can be viewed through the document properties window and may also be read by certain systems.

If only one PDF is being processed, manually opening the properties window to make changes may be acceptable; however, in real office scenarios, users often face a batch of files: a batch of scanned contracts, a batch of course handouts, a batch of project materials, and a batch of PDFs converted from Word, doc, docx, or PowerPoint. At this point, deleting the author, title, subject, and keywords one by one is not only inefficient but also makes it difficult to ensure consistent processing across all files. This article will demonstrate how to use " HeSoft Doc Batch Tool " to batch remove PDF document property information, helping users hand repetitive tasks over to the software.

Applicable scenarios: What problems can batch removal of PDF property information solve

Batch removal of PDF document property information is suitable for various practical office needs. The first type is checking files before sending them out. When PDFs are sent externally to clients, partners, students, or public platforms, retaining internal author names, project subjects, or old keywords may cause misunderstandings or even leak unnecessary information.

The second type is archiving historical materials. Long-accumulated PDF files come from various sources, some from scanning systems, some from online conversion tools, and some from office software used by different employees. The title and author in the document properties may be disorganized. After unified removal, file management can rely more on standardized file names and directory structures.

The third type is batch submission of materials. Some systems read PDF metadata as display information. If the title field still contains an old template name, the display after upload will be inaccurate. Cleaning it before uploading can prevent the system from misreading the document title.

The fourth type is privacy and compliance handling. The author field, application field, or XMP information may contain personal identity, software environment, or generation source. Although the screenshots in this article mainly show title, author, subject, and keywords, the tooltip also indicates that this function is intended for batch deletion of document metadata such as title, author, time, and XMP.

Effect preview: From having property information to empty property fields

Before processing: Multiple descriptive fields exist in the PDF properties

The screenshot before processing shows that in the "Document Properties" window of Adobe Acrobat Pro DC, the title, author, subject, and keyword fields of the current PDF all contain content. Red boxes mark these key positions: the title is "Class Notes Packet", the author is "Ian Stone", the subject is "2026 Class Notes Activity", and the keywords also contain multiple English keywords.

These fields may come from the PDF generation software or from the source document properties. For example, when a Word document is converted to PDF, the title or author in the Word, docx, or doc file is sometimes carried into the PDF. For files that need unified cleanup, this information is the target of batch processing.

After processing: Author, title, subject, and keywords have all been cleared

The screenshot after processing again shows the same type of document properties window. The title, author, subject, and keyword areas marked in red are now empty, indicating that the PDF property information has been removed. The page content can still be viewed normally, but the metadata used to describe the file no longer shows the original content.

For batch files, this result is verifiable: as long as you spot-check the processed PDF and see that the relevant fields are empty in the properties window, you can confirm that the batch removal operation has taken effect.

Operation steps: Batch delete PDF metadata using office software

Step 1: Find the corresponding function in HeSoft Doc Batch Tool

After opening HeSoft Doc Batch Tool , you can see that the left side of the software is categorized by file type and office task. Because this article is about processing PDF files, first click "PDF Tools" on the left. The interface will display several PDF-related functions, such as deleting blank pages, optimizing compression, repairing PDFs, modifying PDF metadata, setting the initial view, converting PDF to Word, and converting PDF to PowerPoint.

Among these functions, select "32. Delete metadata in PDF". In the screenshot, this function card is already selected and shows a prompt: batch delete document metadata such as title, author, time, and XMP in PDF files. This matches the need in this article to batch delete PDF author, title, subject, and keywords.

The expected result of this step is to enter the metadata deletion task page, rather than entering editing, conversion, or compression functions. After selecting the correct function, you only need to follow the wizard to add files and execute the processing.

Step 2: Import the PDF files whose properties need to be cleaned

After entering the "Delete metadata in PDF" page, you will see the task flow at the top. The current step 1 is "Select records to be processed". In the upper right corner of the interface there are operation buttons such as "Add Files", "Import Files from Folder", "Clear", and "More".

If the number of files is small, you can click "Add Files" to select PDFs; if all files to be processed are already concentrated in one folder, it is recommended to use "Import Files from Folder", which is more in line with batch office habits. In the screenshot, 4 PDF files have already been imported, and the list shows the sequence number, name, path, extension, creation time, and modification time. The bottom shows that the number of records is 4.

The purpose of this step is to establish an accurate list of files to be processed. The software does not require users to open each PDF properties window one by one, but instead centrally manages the files to be processed through the list. For dozens or even hundreds of PDFs, this approach can significantly reduce repeated clicking and manual inspection time.

Step 3: Check the list and confirm that no incorrect files have been imported

After importing, it is recommended to confirm based on the table information. First check whether the extension is pdf, to avoid mixing non-PDF files into the task; second, check whether the path is the target folder, such as D:\test\ in the screenshot; finally, check whether the number of records matches expectations. If there are PDFs in the list that do not need to be processed, you can click the delete icon in the operation column to remove them.

Although this step is simple, it is very important in batch tasks. Because metadata deletion will take effect on all files in the list, if you start processing without checking, files that do not need cleaning may also be processed. Especially for enterprise files and archived files, it is recommended to first copy the PDFs to be processed into a dedicated directory and then import them into the software.

Step 4: Enter the save location settings and specify the output directory

After confirming the file list, click "Next" at the bottom. According to the step bar in the interface, the next stage is "Set save location". In the screenshot after processing, you can see that the result file location is the output directory, which means that the processed files will be saved to the specified location for easy separation from the original files.

It is recommended not to set the output directory too scattered. You can create a clear folder, such as "PDF properties after cleaning", "PDF metadata deletion results", or a unified output directory. In this way, after processing is complete, users can quickly find the result files and compare them with the original files. If reprocessing is needed later, the original files and processed files can also be clearly distinguished.

Step 5: Start processing and verify the PDF properties

After the save location is set, follow the wizard to enter "Start Processing". The software will perform batch metadata deletion on the PDFs in the list. Because this is batch processing, users do not need to open files one by one or delete the title or author item by item. The whole process is more suitable for large numbers of office files.

After processing is complete, it is recommended to open one of the PDFs in the output directory and go to document properties for verification. Focus on checking whether the title, author, subject, and keyword fields are empty. If they match the post-processing screenshot, it means that the common metadata of the file has been removed. For tasks with a large number of files, you can spot-check multiple PDFs from different sources and with different names to improve the reliability of the confirmation.

Frequently asked questions and precautions

What is the difference between deleting PDF metadata and modifying PDF metadata?

The goal of deleting metadata is to clear existing property information, such as removing the author, title, subject, keywords, and other fields; modifying metadata usually means changing these fields to new content. The scenario in this article is cleaning and desensitization, so choosing "Delete metadata in PDF" is more appropriate. If your goal is to uniformly write a company name or standard title, you should choose the corresponding modification function according to your actual needs.

Will the file size change significantly after processing?

Metadata usually accounts for only a small part of a PDF file, so after deleting the title, author, subject, and keywords, the file size may not change significantly. In the screenshot, the file sizes before and after processing are similar, which is also consistent with common situations. To determine whether the operation was successful, you should not only look at the file size, but also check whether the document property fields have been cleared.

Will it affect the page count and page display of the PDF?

From the effect images, the PDF is still 9 pages before and after processing, and the page content is still visible. This function focuses on document property information, not page cropping, compression, or content deletion. For safety, it is still recommended to test samples first for important files and keep the original files.

Why keep the original files?

The advantage of batch processing is high efficiency, but it also means that one operation will affect multiple files. Keeping the original files allows you to quickly roll back if the processing result does not meet expectations. Putting the original PDFs in one directory and outputting the processed PDFs to another directory is a recommended way of handling office files.

Summary

Batch removal of PDF document property information can solve the problem of metadata such as author, title, subject, and keywords being inappropriate to retain, and is suitable for various scenarios including external sharing, archiving, platform submission, and privacy protection. HeSoft Doc Batch Tool turns this need into a clear wizard process: select "Delete metadata in PDF", import files or folders, confirm the task list, set the save location, and then start processing.

Compared with opening PDFs one by one and manually clearing the properties, using batch processing software can significantly reduce repetitive work and also keep the processing results consistent across multiple files. If you are organizing a large number of PDFs, it is recommended to first verify the effect with a small number of samples and then batch process the official files. In this way, you can ensure safety while truly leveraging the efficiency value of office software in batch file processing.