When a folder contains a large number of PDFs that need a unified keyword replacement, using a batch processing tool is more efficient than manual editing. This article focuses on batch find and replace for PDF keywords, demonstrating how to import multiple PDFs in HeSoft Doc Batch Tool , select formula-based fuzzy text search, and update the month and year in dates in one go through a row-by-row find-and-replace list, suitable for batch document maintenance scenarios.
In enterprise office and document management, it's common to export documents of the same type as PDFs, such as project reports, audit materials, policy documents, product manuals, notices, and announcements. These PDFs often come from the same template, so their content structure is similar. When template information needs to be updated, a problem arises: a folder may contain many PDFs, and each file needs to have the same types of keywords replaced. Manually editing them one by one is not only time-consuming but also makes it difficult to ensure every file is processed correctly.
This article uses the example of "batch replacing date keywords in PDFs" to introduce how to use HeSoft Doc Batch Tool to perform batch find and replace of PDF keywords. In this example, the date in the PDF before processing contains "April 13, 2017", which is changed to "August 13, 2026" after processing. The month and year are the content that needs replacing, while the day of the month remains unchanged. This case effectively illustrates the value of wildcard or formula-based fuzzy searching in batch PDF processing.
Applicable Scenario: All PDFs in a Folder Need Unified Modification
If you only have one PDF to modify, opening a PDF editor and handling it manually might not be too difficult. But if you have multiple PDFs in a folder, or if you need to repeatedly process similar files daily or weekly, the manual method becomes inefficient. The value of batch processing tools lies in turning repetitive operations into a single rule setup, allowing the software to automatically handle processing across multiple files.
Typical scenarios include: batch updating the publication date on the cover of PDF reports; batch replacing old project names in PDF contracts; batch modifying years, version numbers, and URLs in PDF files; batch correcting numbers across multiple PDF archives; replacing old department names with new ones in a batch of PDF notifications. Similar needs often arise for Word, docx, doc, Excel, PPT, and other files, but this article focuses on keyword replacement within the content of PDF files.
When the target content is completely fixed, you can use exact search; when the target content has some variation, fuzzy search is necessary. For example, the month might be April or May, and the year could be any four-digit number. In such cases, using wildcards or formula rules is more efficient.
Pre-Processing Status: PDF Files and Content to be Replaced
From the screenshot of the folder before processing, we can see there are currently 4 PDF files: 1.pdf, 2.pdf, 3.pdf, 4.pdf. These files are the subjects of this batch processing task. In a real office setting, the quantity might be larger, but the operational approach is the same.
After opening one of the PDFs, you can see a report title at the top of the page, with the date "April 13, 2017" located towards the left in the middle of the page. The red box highlights two key areas: the month "April" and the year "2017". This means the target for replacement is not the entire page content, nor the entire date string, but two key parts of the date.
This requirement is common in batch document maintenance: preserving the original layout and most text, while updating only certain variables. Manual processing would require opening each PDF, finding the corresponding location, modifying the month and year, and saving. The more files there are, the more likely it is for omissions and inconsistencies to occur.
Post-Processing Result: Keywords Replaced with New Content
After processing is complete, opening the output PDF shows the date has been updated to "August 13, 2026". From the screenshot effect, the month is changed to August, the year to 2026, and all other content remains as is. This is exactly the desired outcome of batch find and replace: changing only what needs to be changed, without affecting other page elements.
Using this method, if there are a large number of PDFs in the same folder, they can all be batch processed following the same rules. Compared to manual, piecemeal edits, batch tools not only save time but also ensure replacement rules are more consistent, reducing human operational variance.
Operation Step 1: Open the PDF Keyword Find and Replace Tool
After launching HeSoft Doc Batch Tool , first select "PDF Tools" in the left navigation panel. The software's interface displays multiple categories for office file processing, indicating its positioning as a document batch processing tool for office scenarios, rather than an editor for processing single files.
Once inside the PDF Tools section, select "Find and Replace Keywords in PDF". The description for this function is "Batch find and replace keywords in PDF file content", which aligns perfectly with the problem this article aims to solve.
After selecting the correct function, the software enters a step-by-step process. This wizard-style design is suitable for batch tasks, as batch processing typically requires selecting files first, then setting rules, defining the output location, and finally executing uniformly. Following the steps helps reduce the probability of missed settings.
Operation Step 2: Import PDF Records from a Folder
In Step 1, "Select records to process", the top right of the interface provides "Add Files" and "Import Files from Folder". If the target PDFs are all concentrated in a single folder, using "Import Files from Folder" is recommended, as it adds all PDFs from that folder to the task more quickly.
The screenshot shows 4 PDF files have been imported, with the list displaying sequence number, name, path, extension, creation time, and modification time. The summary at the bottom shows a record count of 4, indicating that 4 files will be processed currently.
The purpose of this step is not immediate processing, but to confirm the scope. It is recommended to check file names and paths one by one to avoid including unrelated PDFs in the task. If files need to be reselected, you can use buttons like "Clear" on the interface to clean the list and re-import. After confirming the list is correct, click "Next" at the bottom.
Operation Step 3: Set Wildcard Rules Using Formula Fuzzy Search
After entering Step 2, "Set processing options", you can see the "Search Method" setting. This example selects "Use formula for fuzzy text search" instead of "Exact text search". This is because the target text contains possible variations: the month might not only be April, and the year might not be a fixed 2017.
In the "Keyword list to find" input, two lines of rules are entered: the first line is "April|May", the second line is "\d{4}". The first line is used to match April or May; the second line matches four-digit numbers. Since a year is typically a four-digit number, this can be used to locate the year field.
In the "Replacement keyword list" input, two lines of new content are entered: the first line is "August", the second line is "2026". Special attention must be paid to the row-by-row correspondence: content found matching the first line on the left will be replaced by the first line on the right; content found matching the second line on the left will be replaced by the second line on the right. In other words, April or May will be replaced with August, and the four-digit year will be replaced with 2026.
This setup method is very suitable for batch processing PDFs from similar templates. You don't need to set up rules for each file individually, nor do you need to know the specific year in each file. As long as the target content matches the rule, it can be found and replaced by the software.
Operation Step 4: Save to a New Location and Start Batch Processing
After setting up the find and replace lists, click "Next". The process flow at the top shows subsequent steps are "Set save location" and "Start processing". It is recommended to choose a new output directory when setting the save location, rather than overwriting the original files. This preserves the pre-processing version for comparison and rollback.
Before starting the processing, double-check: Is the number of imported files correct? Is the search method set to "Use formula for fuzzy text search"? Are the row counts in the left and right lists consistent? Is the spelling of the replacement content correct? Proceed to the start processing step only after confirming everything is correct.
After processing is complete, don't just check if the task has ended; also spot-check several output PDFs. Focus on checking whether target keywords were replaced successfully and whether any content that shouldn't have been replaced was affected. For a large number of files, it's recommended to at least sample files from different sources, different page counts, and different date formats to ensure the rule's scope is sufficiently accurate.
Frequently Asked Questions and Notes
1. Could fuzzy search cause erroneous replacements? It is possible. The broader the fuzzy rule, the larger the matching scope. For example, "\d{4}" might match a year, or it could match other four-digit numbers. Therefore, before formal batch processing, it's best to test on a small number of PDFs first.
2. Can the replacement list be left blank? The prompt in the screenshot indicates "Leaving blank means deletion." This means if a row in the replacement keyword list is not filled, it might be used to delete the matched content. Exercise caution during actual operation to avoid accidentally deleting important text.
3. Why replace the month and year on two separate rows? Because they are two different target content items and need to be replaced with two different new values. Setting them on separate rows makes the replacement relationship clearer and preserves the date number in between.
4. If the same word appears in all PDFs, is fuzzy search still necessary? No. For completely identical text, you can use "Exact text search", which has simpler rules and is less prone to false matches.
5. What is the most important preparation before batch processing? First, back up the original PDFs. Second, clearly define the search rules. Third, conduct small-scale tests first. Especially for formal contracts, financial documents, and archival materials, you must confirm the results are correct before batch application.
Summary: Turn PDF Batch Modification into a Single Rule Setup
The core idea of batch find and replace for PDF keywords is to convert repetitive manual operations into reusable rules. With HeSoft Doc Batch Tool , you can first import multiple PDFs, then select "Use formula for fuzzy text search", input wildcard or formula rules, and finally output the processed files uniformly.
In this example, the software replaced the month and year in the PDFs with August and 2026, respectively, successfully achieving a batch update of date fields across multiple PDFs. For users who frequently process a large number of office files, this method can significantly reduce repetitive labor and improve document maintenance efficiency. The next time you encounter a batch task for modifying dates, numbers, names, or version numbers in PDFs, it is recommended to prioritize using a batch processing tool.