PDF Document Properties Batch Setting Tutorial: How to Unify Title, Author, Subject, and Keywords

The title, author, subject, and keywords in PDF document properties affect file archiving, document retrieval, and document management. If multiple PDFs have empty or inconsistent properties, modifying them one by one is very inefficient. This article uses before-and-after effect images and software operation screenshots to introduce how to use HeSoft Doc Batch Tool to batch set PDF metadata, helping users standardize the properties of multiple files in one go.

Many people only focus on the PDF page content in their daily office work, but overlook the PDF document properties. In fact, PDF metadata such as title, author, subject, and keywords are very important for document archiving, internal search, e-book management, and project delivery. For example, if there are dozens of PDF reports under the same project, and some have empty author fields, some have titles that are old file names, and some have no keywords filled in, it will be very inconvenient to retrieve them later in the document library.

If you use a PDF reader to open the "Document Properties" window one by one and manually fill in the title, author, subject, and keywords, it is not only time-consuming but also error-prone. In particular, PDFs generated from Word, doc, docx, PPT, web pages, or scanning tools have complex metadata sources, and it is more suitable to use specialized office software for batch organization. The following uses HeSoft Doc Batch Tool as an example to explain how to batch set PDF document properties.

Applicable scenarios: Why unify PDF document properties

PDF metadata can be understood as the "background explanatory information" of a file. It does not appear directly on the page like the body text, but it is read by many software, systems, and platforms. For example, the properties window of a PDF reader, enterprise knowledge bases, document management systems, and search indexing tools may all use this information to assist in identifying files.

The following scenarios are very suitable for batch setting PDF metadata:

• Company policies, training materials, and product manuals need to unify the author as the company name or department name.
• Course materials, e-books, and learning PDFs need unified titles and subjects for easier classification management.
• Project delivery documents need to include keywords such as project year, version, and person in charge.
• PDFs batch exported from Word, docx, or doc have empty properties and need to be supplemented later.
• Old PDF files contain incorrect authors or irrelevant titles and need to be corrected in batches.

The biggest feature of this kind of work is "the same rules and many files." Therefore, batch processing tools are more suitable than manual operations.

Effect preview: Before processing, the document properties lack title, author, subject, and keywords

Before processing, when you open the document properties of one of the PDFs, you can see that the title, author, subject, and keyword fields are empty. Although the PDF file can be read normally, these properties do not provide any effective information.

The red-boxed area in the screenshot is the focus that needs to be batch set this time. For a large number of PDF files, if each file is in a similar state, then later when uploading to a document library, sending to clients, or archiving, there will be a lack of unified identifiers. Especially in an enterprise environment, irregular document properties increase search costs and are not conducive to version management.

Effect preview: Metadata has been uniformly written after processing

After the batch processing is completed, when you open the PDF document properties again, you can see that the title, author, subject, and keywords have been written. In the example, the title is Title for 2026, the author is Jack, the subject is How to learn English, and the keyword is 2026.

This shows that the software has written the configured metadata into the output PDF. It should be noted that modifying metadata is not equivalent to modifying the PDF body text. It mainly changes the document property information, so it is suitable for standardizing PDFs without affecting the file content.

Operation steps: Batch set PDF title, author, subject, and keywords

Step 1: Find "Modify PDF metadata" in the PDF tool

Open HeSoft Doc Batch Tool , and select "PDF Tool" in the left tool category. The interface will display multiple PDF-related batch processing functions. According to the screenshot, you need to click "34. Modify PDF metadata." The function description clearly mentions that it can batch modify the title, author, subject, keywords, and other information in PDF files.

The purpose of this step is to enter the correct function entry. Because the same software also includes functions such as deleting PDF metadata, deleting bookmarks, compressing PDFs, and converting PDFs, if the goal is to write or modify document properties, you should choose "Modify PDF metadata" instead of "Delete metadata in PDF."

Step 2: Import the PDF files that need batch processing

After entering the function page, the first stage is "Select records to process." The top of the interface provides operation entries such as "Add Files," "Import Files from Folder," "Clear," and "More." You can choose the import method according to the number of files: for a small number of files, use "Add Files"; when a large number of files are concentrated in one directory, using "Import Files from Folder" will be more convenient.

After the files are imported, the software will list information such as file name, path, extension, creation time, and modification time in the table. In the screenshot, 4 records are imported, namely 1.pdf, 2.pdf, 3.pdf, and 4.pdf, and the paths are all located in the D:\test\ directory. This list is equivalent to a processing checklist, and the metadata set later will be applied to these files.

Before clicking "Next," it is recommended to confirm three points: first, whether the extensions are all pdf; second, whether the paths are the target directory; third, whether any files were selected by mistake. Batch processing is very efficient, but it also means that incorrect settings may affect multiple files at once, so checking after import is very necessary.

Step 3: Enable the fields to be modified and fill in the content

After clicking "Next" at the bottom, you enter the second stage, "Set processing options." This page lists multiple metadata fields in the form of switches plus input boxes. In the screenshot, the four items of title, author, subject, and keywords have been enabled, and the corresponding content has been filled in.

The specific setting examples are as follows:

• Title: Title for 2026
• Author: Jack
• Subject: How to learn English
• Keyword: 2026

Here it is important to understand the meaning of the "switch." Only the fields with the switch turned on will be written or modified. For example, if you turn on "Author" and fill in Jack, then the author field of the PDFs in the imported list will be set to Jack; if the "Creation Date" switch is off, the creation date will not be modified by this operation. This design can avoid unnecessary property changes.

When filling in the content, pay attention to unified rules. The title can be the project name, material name, or course name; the author can be an individual, team, or company; the subject can describe the field to which the document belongs; for keywords, it is recommended to fill in words that can help retrieval, such as year, department, product, course, project number, etc. For Chinese PDFs, Chinese keywords can also be filled in; for English materials, English keywords can be filled in.

Step 4: Set the save location and output the processed PDF

After setting the processing options, continue to click "Next" to enter "Set save location." In the process bar, you can see that this is the third stage before starting processing. It is recommended to choose a new output folder to save the processed PDFs to avoid directly overwriting the original files. In this way, even if you later find that the title or keywords need to be adjusted, you can quickly return to the original file and process it again.

After setting the save location, enter "Start Processing." The software will batch process the PDFs according to the previously imported file list and the configured metadata content. After completion, you can open any PDF in the output directory and use the document properties window to check whether it was written successfully. The effect image after processing in this article has already proven that the title, author, subject, and keywords can all be displayed correctly.

Common questions or precautions

1. Will the PDF file size change after modifying metadata?

Writing metadata may cause a slight change in file size. In the example, the file sizes before and after processing are slightly different, which is normal. As long as the page content, page count, and readability are not abnormal, it means the processing result meets expectations.

2. Can PDFs in a folder be batch processed?

From the screenshot, it can be seen that the software provides an "Import Files from Folder" button, so when multiple PDFs are concentrated in one directory, you can use this method to import them quickly, which is suitable for batch organizing materials.

3. Are the title and file name the same thing?

No. The file name is the name seen in the system, such as 1.pdf and 2.pdf; the title is the metadata field in the PDF document properties. Modifying the title is not the same as renaming the file. If your goal is to change the file name, you should use a file name-related tool; if your goal is to change PDF properties, use the function introduced in this article.

4. Should I back up before batch setting?

It is recommended to back up, or at least output to a new folder. The biggest advantage of batch processing is speed, but you should also avoid accidental operations affecting the original files. Keeping the original PDFs can make the modification process safer.

Summary: Use batch processing to improve PDF property management efficiency

Unifying PDF document properties is not a complicated task, but repeated operations consume a lot of time. With HeSoft Doc Batch Tool , you can centrally set the title, author, subject, and keywords of multiple PDFs, reducing the mechanical labor of opening the PDF properties window one by one. This batch processing method is very practical for organizing enterprise materials, course files, e-books, project documents, and files converted from Word to PDF.

If you are organizing a batch of PDFs, it is recommended to first determine unified metadata rules, then import the files, enable the fields to be modified, fill in the content, set the save location, and start processing. This can not only ensure standardized document properties but also significantly improve office efficiency.