When dealing with multiple PDF reports, contracts, or archived documents, modifying keywords such as dates, names, or reference numbers one file at a time is highly inefficient. This article uses a practical example to illustrate how to batch find and replace keywords across multiple PDFs using HeSoft Doc Batch Tool : first verify the original content, then access the PDF tool and select the corresponding function, import multiple PDFs, set the exact search text and replacement list, and finally save and review the output, helping users complete repetitive PDF modification tasks more quickly.
Many office workers encounter a similar situation: a batch of PDF files has been generated and archived, but a certain date, project name, company name, year number, or fixed description needs to be uniformly updated. If these files were Word, .docx, or .doc documents, it might be possible to batch-adjust the source files and re-export them; however, in reality, many materials only remain in PDF format, or only the PDF format can be used for external distribution. In such cases, manually opening each PDF, searching for keywords, modifying, and saving not only is slow but also prone to issues like missed changes, incorrect modifications, and disordered file saving.
This article focuses on "how to uniformly replace content text in multiple PDF files," emphasizing how to use HeSoft Doc Batch Tool to perform batch keyword search and replacement within PDF content. The example includes four PDF files. Before processing, the page date is "April 13, 2017," and after processing, it becomes "August 13, 2026". Through this example, you can understand the complete workflow for batch-replacing text in PDFs and apply the method to more office scenarios, such as contract dates, report years, company names, product models, contacts, addresses, and more.
Applicable Scenarios: When PDF Body Content Needs Uniform Modification
The advantage of the PDF format is its stable layout and ease of reading and distribution, but this also makes later batch modifications inconvenient. Especially in enterprise office settings, it is common for a batch of files to be generated using the same template. For example, covers for a series of reports all share the same month and year; the Party A name or project abbreviation in multiple contracts needs updating; the time, location, or department name in several notification documents changes; historical archived files require replacing old codes with new ones.
If the modification rules are consistent, such as changing all "April" to "August" and all "2017" to "2026", it is very suitable to use batch processing software. As shown in the screenshot, the pending folder contains four PDF files, named 1.pdf, 2.pdf, 3.pdf, and 4.pdf. The number of such files is not necessarily large, but as long as each file needs the same rules applied, batch processing can save a significant amount of repetitive work.
The core value of this type of tool is not simply "being able to modify a PDF," but helping users process multiple files at once, reducing the mechanical labor of repeatedly opening, searching, editing, and saving. For roles in administration, human resources, legal, finance, project management, and data archiving, batch file processing can often directly improve daily office efficiency.
Effect Preview: PDF Contains Old Keywords Before Processing
Before processing, let's first check the PDF content. The screenshot shows that the first page of the PDF is a report cover, where the date "April 13, 2017" can be seen. "April" and "2017" are highlighted with red boxes, indicating they are the old keywords that need to be replaced this time.
A detail worth noting here: what needs replacing is the text within the PDF pages, not the filenames. That is, even though the filenames are still 1.pdf, 2.pdf, etc., the goal is to enter the PDF's body content, find the specified words, and replace them. The pain point many users encounter when searching for "batch replace PDF text" or "batch modify PDF content" is precisely the inconvenience of maintaining body content uniformly.
If handled manually, one would need to search for "April" in each PDF and change it to "August"; search for "2017" and change it to "2026". For multi-page PDFs, confirming that every occurrence has been processed is also necessary. The example PDF header shows a total of 77 pages; if there are multiple similar files, the cost of manual checking increases rapidly.
Effect Preview: Dates in PDF Have Been Uniformly Updated After Processing
After completing the batch replacement, opening the processed PDF shows that the original "April 13, 2017" has been updated to "August 13, 2026". The screenshot highlights the replaced month and year with red boxes, indicating that the keyword replacement has taken effect in the content of the PDF page.
From this result, we can see that this replacement did not simply overwrite the entire date string but replaced two keywords separately: "April" was replaced with "August", "2017" with "2026", and the original "13," in between remained unchanged. For office documents, this method of precise keyword-based replacement is more flexible. For example, you could replace only the year or replace multiple fixed fields simultaneously, as long as the search list and replacement list correspond one-to-one during setup.
Step-by-Step: Batch Find and Replace Keywords in PDF Files
Step 1: Open the PDF Tool and Access the Keyword Replacement Feature
After launching HeSoft Doc Batch Tool , first select "PDF Tools" in the left navigation bar. This software is a batch document processing tool designed for office scenarios; besides PDF tools, the interface also shows categories like Word Tools, Excel Tools, PowerPoint Tools, Text Tools, Image Tools, etc. For this task, you should enter the PDF-related functional area.
In the PDF tools list, find and click "Find and Replace Keywords in PDF". The description on this function card in the screenshot is "Batch find and replace keywords in PDF file content," which perfectly matches our goal. After selecting this function, the software will enter a dedicated batch replacement wizard.
The expected result of this step is entering the "Find and Replace Keywords in PDF" processing page. Users do not need to search repeatedly through multiple menus for editing entries but directly enter the workflow for replacing keywords in PDF content.
Step 2: Add PDF Files and Confirm the Pending Records
After entering the function page, you will first arrive at the "Select records to process" stage. In the upper right corner of the page, you can see buttons like "Add File" and "Import Files from Folder". If PDF files are scattered in different locations, you can add them one by one; if they are all in the same folder, using "Import Files from Folder" is more recommended, as it allows importing multiple PDFs at once.
In the screenshot, the software has imported four records: 1.pdf, 2.pdf, 3.pdf, and 4.pdf. The list shows sequence number, name, path, extension, creation time, modification time, and an action column, with a summary at the bottom showing the total number of records as 4. Through this list, users can clearly know which files this batch task will affect.
Before proceeding to the next step, it is recommended to carefully check two things: first, ensure the file count is correct to avoid missing any PDFs; second, ensure the file paths are correct to prevent accidentally processing files in other directories. After confirmation, click "Next" at the bottom. If you find files in the list that do not need processing, you can remove them via the action column, or use "Clear" to re-import.
Step 3: Select Search Method and Fill in Keyword Correspondence
Next, you enter the "Set processing options" stage. In the "Set Keyword Options" area, the screenshot shows "Exact Text Search" is selected. This setting is suitable when you clearly know the words to be replaced, such as months, years, codes, company names, fixed phrases, and so on.
The most critical part of the page is the two lists on the left and right. The left "Keywords to Find" list is for entering old content, and the right "Keywords to Replace With" list is for entering new content. In the example, the first row on the left is "April," and the first row on the right is "August"; the second row on the left is "2017," and the second row on the right is "2026". With this setup, the software will search for "April" in the imported PDFs and replace it with "August", and search for "2017" and replace it with "2026".
When filling in the lists, pay special attention to the correspondence between rows. The biggest fear with batch replacement isn't slow processing, but incorrect rules leading to a batch of erroneous results. It's advisable to place each search term and its replacement term in the same corresponding row number, and double-check before clicking next. For example, row 1 corresponds to row 1, row 2 to row 2, and do not mix fields with different meanings.
Additional options like "Ignore letter case" and "Match complete word instead of part of the word" can also be seen in the interface. For English keywords, if the case is inconsistent in the document, pay attention to the case option; if the keyword is short and might appear inside other words, use the complete word matching settings cautiously. Characteristics of different document contents vary, so testing with sample files is recommended.
Step 4: Set Output Location and Execute Start Processing
After completing the keyword setup, continue by clicking "Next". From the progress flow at the top of the page, you can see subsequent stages are "Set Save Location" and "Start Processing". The significance of setting the save location is crucial: it determines where the processed PDF files will be saved. To ensure data security, it is recommended to output the processed results to a new folder, so the original PDFs are preserved for comparison and rollback.
After setting the save location, you enter the "Start Processing" stage, where the software executes the batch task based on the previously imported PDF list and keyword replacement rules. Once processing is finished, open the output folder to check the results. It is recommended to spot-check at least a few PDFs, especially pages containing the target keywords, to confirm that old words have been replaced with new ones and that page layout and other content remain normal.
Common Questions and Considerations
1. Why is it recommended to test before batch replacing PDF text?
Because PDF files come from complex sources; some are text-based PDFs exported from Word, .docx, .doc, or layout software, while others are image-based PDFs generated from scans. Text-based PDFs are usually more suitable for keyword search and replace; text in image-based PDFs might not be directly recognizable as text. Testing with one or two files first can confirm whether the software can find the target keywords and check the display effect after replacement.
2. How to maintain correspondence between the left and right keyword lists?
You can think of the left list as the "Old Words List" and the right as the "New Words List". The same row represents one set of replacement relationships. For example, row 1 on the left, "April", corresponds to row 1 on the right, "August"; row 2 on the left, "2017", corresponds to row 2 on the right, "2026". Do not leave empty rows causing misalignment when filling out, as this could lead to unexpected replacement relationships.
3. Can multiple different keywords be replaced at once?
As seen from the list structure in the screenshot, multiple keywords can be entered row by row. In actual office work, dates, years, company names, project codes, and other rules can all be processed in the same batch task. However, the more rules there are, the more carefully you need to check. It is recommended to verify using a small number of PDFs first before batch processing all files.
4. Will the replacement overwrite the original PDFs?
The screenshot shows that the process includes "Set Save Location", indicating the user needs to specify where the processed results are saved. In practice, it is recommended to choose a new output directory to avoid directly overwriting the original files. This preserves the original versions, making it easier to compare differences before and after processing.
5. What if a keyword appears many times in the PDF?
The advantage of batch find and replace is precisely handling content that appears repeatedly. However, because it follows rules to find target text, you should confirm before setup whether the keyword only appears in the locations you wish to modify. If the same word appears in the body, headers, footers, or explanatory text, it's advisable to first assess whether they should all be replaced.
Conclusion: Leave Repetitive PDF Text Modification to Batch Processing Tools
Uniformly replacing content text in multiple PDF files is a typical repetitive office task. Using HeSoft Doc Batch Tool , you can select "Find and Replace Keywords in PDF" within the PDF tools, batch import PDF files, set exact text search and the keyword replacement list, and save the output uniformly. Compared to opening and modifying PDFs one by one, this method is more suitable for scenarios involving a large number of files with consistent replacement rules.
If you are handling a batch of PDF reports, contracts, notices, or archived materials that need uniform replacement of dates, years, names, or codes, you can follow this article's process: first import a small number of files for testing, confirm the effect, and then batch process the complete folder. This can reduce repetitive labor, lower the risk of human missed corrections, and make PDF content maintenance more efficient and controllable.