When there are a large number of PDF files and you need to uniformly replace the same batch of keywords across multiple files, manual operation can be very inefficient. This article introduces the method of using HeSoft Doc Batch Tool to batch find and replace text in PDFs, including a comparison of effects before and after processing, file import, keyword settings, saving and processing suggestions, and illustrates with an example how to replace April and 2017 in a PDF with August and 2026 respectively.
How to batch find and replace text in PDF? This is a problem that many office users encounter when processing reports, contracts, notices, and certification materials. The PDF format is stable, easy to read and distribute, but when the same text needs to be modified across multiple PDFs, the traditional method often involves opening files one by one, searching for keywords page by page, and finally saving new files. This process is not only slow but also prone to omissions due to the large number of files.
This article will introduce a method more suitable for office scenarios: using HeSoft Doc Batch Tool to modify keywords in multiple PDF files at once. In the example, there are 4 PDF files, and the text "April" needs to be replaced with "August", and "2017" with "2026". Through this case, you can understand the complete workflow for batch replacing PDF text and master the precautions during the operation.
Applicable Scenarios: When do you need to modify text in multiple PDFs at once
When the number of PDF files is large and the modifications are repetitive, batch find and replace is suitable. For example, the release dates of a batch of PDF reports need updating, the company name in a set of contract files needs to be changed, the year in multiple project documents needs adjustment, or the version number in several PDF manuals needs to be changed from an old version to a new one. Manually modifying them one by one in these cases not only wastes time but also increases the probability of errors.
The value of batch processing office software lies in its ability to apply the same processing rules to multiple files. Users only need to set the search content and replacement content once, and the software will process all PDFs according to the task list sequentially. For tasks like file organization, data archiving, project document maintenance, and administrative notice updates, this method can significantly reduce repetitive labor.
It should be noted that batch find and replace is more suitable for PDFs with selectable text. If the PDF is a scanned image, the characters on the page look like text but are actually image content, find and replace may not process them directly. Therefore, before formal batch operations, you can open a PDF to confirm whether the text can be selected or copied.
Effect Preview: PDF files and keywords that need replacement before processing
Before processing, four PDF files were placed in the folder, namely 1.pdf, 2.pdf, 3.pdf, and 4.pdf. They all need to execute the same keyword replacement rules.
After opening the PDF, you can see the date displayed on the page is "April 13, 2017". In the screenshot, "April" and "2017" are marked with red boxes, indicating these two text fragments are the targets for this batch find and replace.
The business requirement here is not to delete the entire date or rearrange the PDF layout, but to replace the old month and old year with a new month and new year. This keeps the original content structure of the PDF largely unchanged, updating only the specified keywords.
Effect Preview: PDF text has been replaced after processing
After completing the batch processing, opening the processed PDF shows the date has changed to "August 13, 2026". The month changed from April to August, the year from 2017 to 2026, and the day "13," in the middle remained unchanged.
From the processing results, it can be seen that the software performs replacements according to the search words and replacement words set by the user, suitable for scenarios requiring unified modification of fixed text within PDFs. If these old keywords exist in the same batch of PDFs, batch updates can be accomplished through a single task run.
Step 1: Open the software and enter the PDF keyword replacement function
After launching HeSoft Doc Batch Tool , first select "PDF Tools" from the tool category on the left. This software provides various office file processing functions, and under PDF Tools, there are multiple batch operations related to PDF.
On the PDF Tools page, 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 directly corresponds to the "PDF batch find and replace text" requirement.
The expected result of this step is to enter the batch find and replace task page. When selecting the function, be careful not to mistakenly choose other functions like PDF conversion, PDF watermarking, or PDF encryption. Only after entering the keyword replacement function will the subsequent workflows for adding files, setting keywords, setting save location, and starting processing appear.
Step 2: Add PDF files to the processing list
After entering the function page, you can see "Add Files" and "Import Files from Folder" at the top. If the number of files is small, you can add files directly; if you have a whole folder of PDFs to process, using "Import Files from Folder" is more convenient.
The screenshot shows 4 PDF files have been imported, and the list displays the serial number, name, path, extension, creation time, and modification time. The file names are 1.pdf, 2.pdf, 3.pdf, 4.pdf, all with the pdf extension, and the bottom summary shows the record count is 4.
After importing files, it is recommended to check three points first. First, whether the file count is correct, to avoid missing PDFs that need processing. Second, whether the file paths are correct, to prevent mistakenly processing files in other directories. Third, whether any PDFs not needing modification were mixed into the list. If problems are found, you can use the operation buttons in the list to delete a single file, or click "Clear" and re-import.
After confirming the processing list is correct, click "Next" at the bottom. The software will then proceed to the second stage, which is setting processing options.
Step 3: Enter the find text and replace text
On the processing options page, first confirm the "Search Method". The screenshot shows "Exact text search" is selected, suitable for scenarios where you clearly know which text to replace, such as dates, years, English months, names, numbers, etc.
Then, enter the text to be found in the "Keyword List to Find" on the left. In this example, two lines are entered: April and 2017. Next, enter the corresponding new text in the "Replacement Keyword List" on the right: August and 2026. With this setup, the software will replace April with August and 2017 with 2026 in the PDFs.
When filling in, pay close attention to the line correspondence. The first line on the left corresponds to the first line on the right, and the second line on the left corresponds to the second line on the right. If you need to replace more keywords, you can continue adding lines, but ensure the left and right sequences match. For batch replacement tasks, the keyword correspondence is key to the accuracy of the results.
The page also provides additional options, including "Ignore letter case" and "Match whole words instead of partial matches". If the English case might be inconsistent in the PDF, you can consider whether to ignore case based on the actual situation. If worried that a keyword is only part of another word, you should pay attention to the whole word match option. For important files, it's advisable to test the effect with a small number of PDFs first.
Step 4: Set the save location and start batch replacement
After setting the keywords, click "Next". According to the workflow prompts on the interface, the following steps are "Set Save Location" and finally "Start Processing". The save location setting determines where the processed PDF files will be placed.
For safety reasons, it is recommended to save the processed PDFs to a new folder, rather than directly overwriting the original files. This preserves the original versions and facilitates comparison of differences between before and after. Especially when replacing text in multiple PDF files, if the replacement rules are written incorrectly, keeping the original files avoids the hassle of retrieving the source materials again.
After entering the start processing step, execute the batch task. The software will process all PDFs according to the file list. When the task is complete, open the output files to check the replacement results and confirm the target keywords have changed to the new content. The final effect in the example is that "April 13, 2017" becomes "August 13, 2026".
Common Issues and Precautions
1. Will all identical keywords in the PDF be replaced? Batch find and replace matches based on the entered keywords. Before processing, confirm whether all occurrences of these keywords in the PDF need to be replaced. For instance, the year "2017" might appear in dates, numbers, or body text explanations; if not all occurrences need changing, settings must be made cautiously.
2. Can I write multiple pairs of find and replace words? Yes. As seen from the screenshot, the list supports multi-line input. The example replaced two sets of content simultaneously: April to August, and 2017 to 2026. In practice, more lines can be added, but the correspondence should be checked line by line.
3. Why is it recommended to output to a new folder? The defining characteristic of batch processing is affecting multiple files at once. Outputting to a new folder preserves the original PDFs, facilitating review and rollback, which is a more prudent office habit.
4. Will the layout be exactly the same after replacement? Judging from the example effect, the replaced text appears near the original position, and the overall page content remains consistent. However, different PDFs may have different fonts, encodings, and text structures, so spot-checking after processing is recommended, especially for files officially distributed externally.
5. What if the PDF is a scanned image? Text in scanned images usually cannot be found directly as text. When encountering such PDFs, first confirm if the text is selectable. If it is not selectable, other OCR processing might be required first before considering subsequent replacement.
Summary
The core idea of batch find and replace text in PDF is: first organize the PDF files that need processing, then set clear find words and replace words, and finally let a batch processing tool execute the task uniformly. The example in this article used HeSoft Doc Batch Tool to replace "April" and "2017" with "August" and "2026" respectively in four PDFs, successfully modifying keywords in multiple PDF files at once.
If you frequently need to process PDF reports, contracts, manuals, notices, or archived materials, it is recommended to prioritize batch processing methods over manually editing files one by one. This saves time and reduces omissions caused by repetitive operations. You can now prepare your PDF files, set up keyword rules, and complete an efficient PDF batch find and replace task by following the steps in this article.