When the same date, name, number, or sensitive term appears repeatedly across multiple PDFs, manually opening each file to delete them is very time-consuming. This article uses HeSoft Doc Batch Tool as an example to demonstrate how to use the "Find and Replace Keywords in PDF" feature to batch replace specified text in multiple PDFs with nothing, thereby achieving the effect of batch deleting PDF keywords. The tutorial includes a comparison of before and after effects, file import, keyword settings, and notes on saving and execution, making it suitable for office scenarios requiring batch cleanup of PDF content.
In daily office work, many PDF files don't exist in isolation but come in batches. For example, contract templates, report appendices, public materials, archived documents, and project manuals may all contain the same date, client name, project code, old version number, or text that needs to be hidden. If you only have one or two PDFs to handle, manually opening each and searching page by page might be acceptable; but when the number of files grows to dozens or hundreds, repeatedly searching, locating, and deleting keywords consumes a lot of time and is prone to omissions.
The issue this article addresses is clear: how to batch-delete keywords from many PDF files. "Deletion" here can be understood as finding specified text in the PDF and replacing it with empty content. According to the screenshots, the office software used is HeSoft Doc Batch Tool , which is positioned as a batch processing tool for office files. Its core value lies in reducing repetitive work, allowing similar file modification tasks to be completed in batches through a single configuration.
Below, we will demonstrate how to batch-delete "April" and "2017" from multiple PDFs using pre-processing, post-processing, and software operation screenshots. You can also use this method to delete other PDF keywords, such as company names, dates, header text, fixed numbers, old project names, etc.
Applicable Scenarios: When is Batch Deleting PDF Keywords Suitable
Batch deleting PDF keywords is suitable for all scenarios where "multiple PDFs contain the same text that needs to be uniformly cleaned up." For example, a batch of reports contains an old date, and the month and year need to be removed; a set of materials is being prepared for external distribution, and internal project codes need to be deleted; some PDF templates retain test text or placeholder text that needs to be uniformly cleared; or before archiving files, fixed fields that no longer need to be displayed must be removed.
Unlike Word, docx, or doc documents, PDFs are generally not suitable for direct line-by-line editing like a document. Especially when PDFs have many pages and there are many files, manual processing is not only slow but also prone to problems like a file not being processed, a page being missed, or a certain case version not being matched. Using the PDF batch find and replace feature in HeSoft Doc Batch Tool , you can list the keywords to be deleted and leave the replacement keywords empty, thereby processing multiple PDF files at once.
As can be seen from the screenshot, the files to be processed in this example are 4 PDF files, named 1.pdf, 2.pdf, 3.pdf, and 4.pdf. They are part of the same batch processing task, suitable for unified operation via the batch method.
Effect Preview: Pre-processing PDF Contains Keywords to be Deleted
Before processing, opening one of the PDFs shows the date text "April 13, 2017" on the page. The screenshot uses a red box and arrow to mark the area to be processed, where "April" and "2017" are the two keywords to be deleted this time. That is, the processing goal is not to delete the entire line of content, but only to delete the specified text, preserving other content not in the keyword list.
This scenario is very common in PDF batch cleanup: some text needs to be preserved, while some fixed words need to be deleted. For example, in the example, "13," is still preserved, while the month "April" and the year "2017" are deleted as keywords. Keyword-level processing avoids the content loss caused by deleting entire pages or paragraphs.
Effect Preview: Specified Keywords Replaced with Empty After Processing
After processing is complete, reopening the PDF for inspection shows that the positions where "April" and "2017" were originally located are now blank, while the "13," in the middle is still preserved. The red box in the screenshot points to the positions left blank after the keywords were cleared. This indicates that the software performs a "find keyword and replace with empty" operation, rather than simply deleting the entire page or text area.
For users needing to batch-delete specified text in PDFs, this effect is very practical: it clears keywords you don't want to display, while preserving the PDF's original layout structure as much as possible. Especially in documents like reports, announcements, manuals, and contract appendices, preserving the page layout is often more important than re-editing.
Operation Step One: Enter the PDF Tool and Select Find and Replace
After opening HeSoft Doc Batch Tool , select PDF Tools in the left tool category. As seen from the interface, the software provides various PDF batch processing capabilities, such as adding watermarks to PDFs, PDF conversion, deleting PDF pages, etc. Since the goal this time is to batch-delete keywords in PDFs, select the first item: Find and Replace Keywords in PDF.
The purpose of this step is to enter the functional module specifically designed for finding and replacing text content in PDFs. Because we want to delete keywords, which essentially means replacing found text with blanks, we should choose "Find and Replace" rather than conversion, merging, or watermarking tools.
Operation Step Two: Add PDF Files for Batch Processing
After entering the "Find and Replace Keywords in PDF" function, the software enters a wizard-based process. Step 1 is Select records to process. According to the screenshot, the interface provides Add File and Import Files from Folder buttons at the top right. If you only need to process a few PDFs, you can click "Add File" to select them individually; if a batch of PDFs is stored in the same folder, it's more convenient to use "Import Files from Folder" to import all PDFs in that folder at once.
After importing, the files are displayed in the list. As seen in the screenshot, there are 4 records: 1.pdf, 2.pdf, 3.pdf, and 4.pdf, all located in the test directory on drive D, with the pdf extension. The list also displays creation time, modification time, etc., making it easy to verify the files are correct before processing begins.
The expected result of this step is that all PDFs from which keywords need to be deleted appear in the task list. If a file not intended for processing is imported, you can remove the corresponding record via the delete icon in the operation column; if there are many files, you can also use the filtering and sorting functions in the interface to assist with verification.
Operation Step Three: Set PDF Keywords to Delete
After adding files, click Next Step at the bottom to proceed to Step 2: Set Processing Options. Here, you need to configure the search mode, additional options, the list of keywords to find, and the list of replacement keywords.
From the screenshot, Find Exact Text is selected as the search mode. This means the software will perform an exact match based on the text input. In the example, two lines of keywords are entered in the "Keywords to find" list: the first line is April, and the second line is 2017. Because the goal is to delete this text, the "Replacement keywords" list on the right remains empty. The interface also clearly prompts: Leave empty to delete.
This step is key to the entire batch PDF keyword deletion task. You need to list all words you want to delete line by line in the left keyword list, such as dates, names, numbers, identifiers, etc.; if it's a deletion rather than a replacement with other text, do not fill in the right replacement list. This way, the software will replace matched keywords with empty during processing, visually appearing as deleting the specified text from the PDF.
Operation Step Four: Set Save Location and Start Batch Processing
After completing keyword settings, continue by clicking Next Step. Following the top process bar, the subsequent steps enter Step 3: Set Save Location, and then Step 4: Start Processing. Although the screenshot does not show the specific save location page, it can be reasonably inferred from the step names that the software will allow the user to specify the output location for processed files and then execute the batch processing task.
When setting the save location, it is recommended not to overwrite the original files directly, especially when processing PDF keywords for the first time. A safer practice is to save the results to a new folder, such as "Processed PDFs" or "Keywords Deleted". This way, even if there is an error in the keyword settings, you can return to the original files for reprocessing.
Once processing starts, the software will process the PDFs in the file list one by one, deleting the set keywords from each PDF. After completion, open the PDFs in the output directory to check the effect, confirming whether the keywords have been cleared and whether the page layout meets expectations.
Common Issues and Precautions
1. Why leave the replacement keyword list empty?
Because the goal this time is to delete keywords, not to replace them with new text. In the screenshot, the prompt next to the "Replacement keywords" list says "Leave empty to delete", so leaving it blank achieves the effect of clearing the specified text.
2. Can multiple keywords be deleted at once?
Yes. In the example, two keywords, April and 2017, were entered at once, and both positions became blank after processing. In actual use, you can enter multiple PDF keywords to be deleted line by line.
3. Will it affect other content in the PDF?
From the example results, the "13," not listed as a keyword is still preserved, indicating that processing focuses on the specified keywords. However, before formal batch processing, it is recommended to test with a small number of files first, confirming the effect before processing all PDFs.
4. Does case sensitivity affect matching?
The interface has an additional option to "Ignore letter case". Whether to check this depends on the actual situation. If you only want to delete exactly matching English words, you can leave it unchecked; if you want April, APRIL, april to all be matched, you can consider using this option.
5. Can text be deleted from scanned PDFs?
The screenshot shows a scenario where text content in a PDF is being found and replaced. If the PDF is a pure image scan, the text might not be recognizable text, and the processing effect will depend on whether the PDF itself contains searchable text content. When encountering scanned documents, it's safer to try searching for the keyword in a PDF reader first; batch processing is more reliable if the keyword can be found.
Summary
The core idea for batch-deleting keywords from many PDF files is: first import the PDFs into HeSoft Doc Batch Tool , then use the "Find and Replace Keywords in PDF" function, write the text to be deleted into the keyword list, and keep the replacement content empty. This way, specified text in multiple PDFs can be batch-cleared, avoiding the inefficient operations of opening individually, searching page by page, and editing manually.
If you often need to process batches of PDF, Word, Excel, PowerPoint, and other office files, it's recommended to delegate such repetitive tasks to batch processing tools. For the scenario in this tutorial, you can prepare the PDFs to be processed and the keyword list in advance, follow the steps in this article to import files, set keywords, save results, and check the output files, thereby quickly completing the task of batch-deleting PDF keywords.