If multiple PDFs contain the same sensitive words, dates, old numbers, or information that should not be disclosed, manually deleting them one by one is inefficient and prone to omissions. This article introduces the method of using HeSoft Doc Batch Tool to batch remove text from PDFs: first enter the find and replace function in the PDF tool, import multiple PDF files, then fill in the keywords to be removed line by line, and leave the replacement content blank. This allows you to batch delete specified text from PDFs, suitable for office scenarios such as report desensitization, pre-disclosure review of materials, and template cleanup.
Before sending materials externally, archiving projects, organizing contracts, or making reports public, a tricky problem often arises: multiple PDFs contain text you don't want to keep. For example, fixed dates, internal code names, sensitive words, client names, old version years, etc. If there are only a few files, it's still manageable to manually open the PDFs, use the find feature to locate them, and then process them one by one; but when there are many files and many pages, manually deleting PDF text is not only time-consuming but also prone to missed deletions, affecting file compliance and delivery quality.
This article focuses on "how to batch clear PDF sensitive words and dates," demonstrating how to use HeSoft Doc Batch Tool to batch delete specified text from multiple PDFs. This software is a batch file processing tool within office software, suitable for centralizing repetitive, mechanical, and error-prone document processing tasks. In this example, we will perform the same batch of keyword deletion operations on 4 PDF files, clearing "April" and "2017" from the PDF pages.
Applicable Scenarios: PDF Desensitization, Date Cleaning, and Old Content Deletion
Batch deleting PDF keywords is not only applicable to English dates as shown in the example. As long as the same text exists in multiple PDFs and you wish to clear it uniformly, similar methods can be used. Common scenarios include: deleting internal project names from external materials; deleting old dates from report covers or footers; deleting test fields from contract attachments; removing personal names, phone numbers, and serial numbers from public documents; uniformly cleaning watermark-style text or fixed descriptions before archiving.
It should be noted that what is discussed here is deleting text keywords within PDFs, not deleting PDF pages, nor converting PDFs to Word, docx, or doc format before editing. Performing find and replace directly within the PDF batch processing flow is generally more suitable for maintaining the original PDF format, page layout, and file structure.
From the screenshots of the files before processing, it can be seen that 4 PDF files are prepared for this processing, named 1.pdf, 2.pdf, 3.pdf, and 4.pdf respectively. They belong to the same batch of files. If processed individually, one would need to repeatedly open, search, modify, and save four times; after using the batch processing tool, you only need to configure the keyword rules once.
Effect Before Processing: Text to be Cleared Exists in PDF Pages
Opening the PDF before processing, you can see date information like "April 13, 2017" appearing on the page. The screenshot uses a red box to mark "April" and "2017," and uses arrows to indicate that they are the target text to be cleared this time. In other words, we are not deleting the entire date area, but only deleting the two specified keywords.
This keyword-based processing method is more precise. For instance, in some cases, the day number, punctuation, or other text in the date still needs to be retained, and only the month and year need to be deleted. In the example, "13," is not in the keyword list, so it will still be retained after processing.
Effect After Processing: Specified Text Deleted, Other Content Retained
Checking the PDF after processing, you can see that the positions where "April" and "2017" originally appeared have become blank, while the "13," in the middle still exists. The blank area marked by the red box indicates that the keywords have been replaced with empty content, which is the actual effect of batch deleting specified text from PDFs.
For users needing PDF desensitization, this result is very intuitive: sensitive words are cleared, while non-target content is not removed entirely. Compared to manual frame selection deletion or screenshot covering, batch keyword replacement with emptiness is more suitable for the unified processing of a large number of files.
Operation Step 1: Find the Find and Replace Feature in the PDF Tool
After launching HeSoft Doc Batch Tool , first select PDF Tools in the left navigation bar. The interface will list multiple PDF-related batch processing functions. To complete the deletion of specified text in PDFs this time, select the 1st option Find and Replace Keywords in PDF.
The purpose of this step is to enter the function page that can recognize PDF text and execute replacement rules. Since "deleting keywords" is essentially "replacing keywords with emptiness," using the find and replace function best meets the requirements. In the screenshot, this function card is highlighted, indicating that the correct entry point has been located.
Operation Step 2: Import the PDF Files Needing Sensitive Word Cleanup
After entering the function page, the software's top section displays a step-by-step flow: select records to process, set processing options, set save location, start processing. First, import files in Step 1. In the top right of the interface, you can see the Add Files and Import Files from Folder buttons.
If the PDFs you need to process are scattered in different locations, you can use "Add Files" to select them one by one; if these PDFs are all in the same folder, using "Import Files from Folder" is faster. After importing, the file list will display information such as serial number, name, path, extension, creation time, and modification time. As shown in the screenshot, 4 PDF files have been successfully imported, and the bottom summary shows a record count of 4.
In this step, it is recommended to carefully check the file names and paths in the list to confirm that no incorrect files were imported. The efficiency of batch processing is high, but it also means that the rules will be applied to all files in the list, so file confirmation before starting is very important.
Operation Step 3: Fill the PDF Text to be Deleted into the Keyword List
After confirming the files are correct, click the bottom Next Step to enter the Set Processing Options page. Here you can see areas like "Find Method," "Additional Options," "Keyword List to Find," and "Replaced Keyword List."
In the example, the find method chosen is Exact Text Search, which is suitable for deleting clear, fixed text content. In the left "Keyword List to Find" area, two lines are filled in: April and 2017. The right "Replaced Keyword List" area is empty, and the interface prompts "Leaving blank indicates deletion." Therefore, the software will search for April and 2017 in the PDFs during processing and replace them with empty content.
If your actual requirement is to delete multiple sensitive words, you can write them into the left list line by line. For example, write the client name on the first line, the project code on the second, and the date on the third. As long as the replacement list remains empty, it means all these contents are to be deleted. If you are not deleting but replacing with other text, you need to fill in the corresponding new content on the right side; however, the focus of this tutorial is batch clearing, so keeping it blank is fine.
Operation Step 4: Save to a New Location and Execute Batch Clearing
After setting the keywords, continue by clicking Next Step. According to the interface flow, you then need to proceed to Set Save Location, and finally Start Processing. It is recommended to save the processing results to a new output folder, rather than mixing them directly into the original directory. This makes it easy to compare files before and after processing and allows you to retain the original PDFs if any issues are found.
After starting the process, HeSoft Doc Batch Tool will execute batch processing according to the file order in the task list. The same keyword deletion rules will be applied to each PDF. After processing is complete, open the output PDFs, check if the target text has been deleted, and randomly spot-check different files and page numbers to confirm the stability of the batch clearing results.
FAQ: What to Confirm Before Batch Clearing PDF Text
1. Will deleting PDF keywords change the page layout?
Judging from the example effect, the keyword positions will become blank, while other text remains. Since the text structure might differ across PDFs, it is recommended to test with a copy first, and only proceed with batch processing of the formal files after confirming the page display meets expectations.
2. If the same word appears multiple times in a PDF, will it all be deleted together?
Find and replace type operations typically target all matched keywords. To avoid accidental deletion, it is recommended to make the keywords as specific as possible. For example, deleting "2017" will affect all positions where 2017 appears. If you only want to process a specific fixed area, you need to first evaluate whether the file content is suitable for using global keyword deletion.
3. What to do about different English letter cases?
There is an "Ignore letter case" option on the settings page. If you wish April, april, and APRIL all to be recognized, you can enable it as needed; if you only want to delete the exactly identical writing, then keep the exact search.
4. Why can't some PDFs find the text?
Some PDFs are scanned images; the page appears to have text, but there is actually no editable or searchable text layer. When encountering such files, you can try searching for the keyword in a PDF reader first. If it cannot be found, batch find and replace may not be able to match it directly either.
5. Is it suitable to convert to Word first and then delete?
If you are only deleting fixed keywords, performing batch find and replace directly in the PDF is simpler. Converting to Word, docx, or doc and then editing may cause layout changes. Only consider conversion editing when you need to extensively rewrite the content.
Summary
The key to batch clearing PDF sensitive words, dates, or old codes lies in standardizing repetitive operations. When using HeSoft Doc Batch Tool , you just need to enter the PDF Tools, select "Find and Replace Keywords in PDF," import multiple PDFs, write the text to be deleted into the keyword list, and keep the replacement content empty, allowing you to batch delete the specified text.
This method is particularly suitable for office scenarios with a large number of files, fixed keywords, and the need to maintain PDF formatting. It is recommended that you organize the keyword list before formal processing and test with a small number of PDFs; after confirming the effects, execute batch processing for all files. This can both improve efficiency and reduce the risk of manual missed deletions.