When multiple PDF files contain identical dates, names, numbers, or fixed terms that need uniform modification, opening each PDF individually to find and replace is time-consuming and prone to omissions. This article uses HeSoft Doc Batch Tool as an example to demonstrate how to import multiple PDF files at once, set the keywords to find and the replacement text, and batch-replace keywords in PDF content, suitable for office scenarios such as contracts, reports, notices, and document archiving.
In daily office work, PDF files are often used as final documents, reports, contracts, notifications, and archived materials. The problem is that once a date, project name, company name, person's name, or number in these PDFs needs to be uniformly modified, manual processing can be very troublesome. Especially when there is more than one file, but dozens or hundreds of them, opening each PDF one by one, searching for keywords, confirming locations, and then modifying and saving not only consumes time but is also prone to missed or incorrect changes.
The problem this article aims to solve is: How to batch find and replace keywords in many PDF files. Below, with screenshots, using the office software " HeSoft Doc Batch Tool " as an example, we will introduce the complete process from selecting functions, importing PDF files, setting find and replace rules, to finally checking the replacement effect. In the example, there are 4 PDF files, and the task is to replace "April" with "August" and "2017" with "2026" in the PDF content, ultimately changing the original date "April 13, 2017" to "August 13, 2026".
Applicable Scenarios: When is it suitable to batch replace PDF keywords
Batch find and replace PDF text is suitable for scenarios where the content structure is similar and fixed text needs to be updated uniformly. Compared to manual per-file modification, using batch processing tools can significantly reduce repetitive work and also makes it easier to confirm the file list and replacement rules before processing.
Common usage scenarios include:
- Batch modify PDF dates: For example, report publication dates, contract signing dates, and notification signature dates that need to be updated uniformly.
- Batch replace company names or brand names: After a company rename, department adjustment, or project name change, historical PDF materials need to be updated synchronously.
- Batch modify numbers and version numbers: For example, replacing old version numbers, document numbers, or project numbers with new ones.
- Batch correct fixed errors in documents: When the same typo, old term, or incorrect description appears in multiple PDFs, it can be replaced uniformly.
- Batch process archived materials: Perform standardized organization on the same batch of PDF reports, manuals, or approval documents.
It should be noted that this article discusses text keyword replacement within PDF content. This operation is generally more suitable for copyable and searchable PDF text; if a PDF is purely a scanned image and the text itself is not a text layer, the replacement effect may be limited. It is recommended to first confirm whether the text in the PDF can be normally selected or searched.
Effect Preview: What changes occur before and after processing
Before Processing: Multiple PDF files need unified modification
From the screenshot of the files before processing, it can be seen that there are 4 PDF files in the current folder, named 1.pdf, 2.pdf, 3.pdf, and 4.pdf respectively. This situation is very common in actual work: a batch of PDF reports, contracts, or materials are placed in the same folder, and they may all contain the same date, year, or keywords.
After opening one of the PDFs, the date content "April 13, 2017" can be seen on the page. The screenshot highlights two key positions that need replacement with red boxes: "April" and "2017". That is to say, this task is not just replacing one word, but processing two sets of replacement relationships simultaneously: replacing "April" with "August", and "2017" with "2026".
After Processing: Keywords have been replaced according to rules
After the batch processing is complete, open the PDF to check, and you can see that the original "April 13, 2017" has become "August 13, 2026". The red box area shows that the month and year have been replaced, while the date "13" in the middle has not been modified, indicating that the replacement rules only take effect for the specified keywords.
This result is very important for batch office work: it is not simply renaming files, nor just searching in file names, but finding and replacing keywords within the PDF file content. For users who need to batch update PDF body text, this type of function can significantly improve processing efficiency.
Operation Steps: Using office software to batch find and replace keywords in PDF
Step 1: Enter PDF Tools, select "Find and Replace Keywords in PDF"
After opening " HeSoft Doc Batch Tool ", select "PDF Tools" from the tool category on the left. The main interface will display multiple batch processing functions related to PDF, such as adding password protection to PDF, adding watermarks to PDF, converting PDF to Word, etc. The function to select here is "Find and Replace Keywords in PDF".
In the screenshot, this function is located as the first item in the PDF Tools list, with the description "Batch find and replace keywords in PDF file content". The purpose of this step is to enter the processing flow specifically for PDF content keyword replacement, rather than performing other operations like PDF merging, conversion, or watermarking.
If there are many tools, you can also use the search area at the top of the interface to quickly locate the function. After finding the function, click to enter, and the software will open the corresponding processing wizard.
Step 2: Add the PDF files to be processed
After entering the "Find and Replace Keywords in PDF" function, you can see at the top of the interface that the processing flow is divided into multiple steps: Select records to process, Set processing options, Set save location, Start processing. Currently, it is at step 1 "Select records to process".
On this page, you can add single or multiple PDFs via the "Add Files" button at the top right, or batch import PDFs from a folder using "Import Files from Folder". In the scenario from the screenshot, 4 PDF files have been imported into the list, with filenames 1.pdf, 2.pdf, 3.pdf, and 4.pdf, all with the pdf extension.
After importing, it is recommended to check whether the files in the list are complete, focusing on the following information:
- Whether the number of files matches the number of files to be processed, for example, the bottom of the screenshot shows the record count is 4.
- Whether the file paths are correct, to avoid importing PDFs from the wrong folder.
- Whether the extension is pdf, ensuring the processing objects meet the functional requirements.
- If files are added by mistake, you can use the delete icon in the operation column of the list to remove them.
After confirming the file list is correct, click "Next" at the bottom to enter the replacement rule setting page.
Step 3: Set find method and replacement keyword list
On the "Set processing options" page, the core settings are concentrated in the "Set keyword options" area. The screenshot shows that "Find method" offers two options: "Exact text search" and "Fuzzy text search using formula", and this example selects "Exact text search".
Choosing "Exact text search" means the software will perform an exact match based on the entered keyword. For example, entering "April" will find text in the PDF content that matches "April"; entering "2017" will find the corresponding year text in the PDF content. This method is suitable for replacing clear, fixed words, dates, numbers, or names.
In the two lists below, the left side is the "Keywords to find list", and the right side is the "Replace with keywords list". The settings in the example are as follows:
- Row 1: Find "April", replace with "August".
- Row 2: Find "2017", replace with "2026".
Special attention should be paid here to the correspondence between rows. The first row on the left corresponds to the first row on the right, and the second row on the left corresponds to the second row on the right. Therefore, if you want to batch replace multiple sets of keywords, you should ensure the order of the two lists is consistent, otherwise replacement relationship errors may occur.
The interface also displays additional options, such as "Ignore letter case" and "Match whole word only, not part of a word". Whether to check these options depends on the actual document content. For example, when dealing with English months and names involving case sensitivity, if you want April, APRIL, april to all be matched, you can consider case-related settings; if you only want to replace whole words to avoid replacing part of a longer word, you should pay attention to the whole word matching option.
After completing the settings, continue by clicking "Next".
Step 4: Set save location and start processing
From the progress bar, you can see that after the replacement rule settings, there are still two steps: "Set save location" and "Start processing". Although the screenshot does not show the specific fields of the save location page, it can be reasonably inferred from the wizard flow that the software will require the user to specify the saving method or location for the processed files.
It is recommended that when batch replacing PDF keywords, you should not directly overwrite the only original copies, especially for important files like contracts, reports, and archived materials. A safer approach is to save the processed PDFs to a new folder, such as "Replaced PDFs" or "Updated Versions", making it easy to compare and check against the original files. If the results are confirmed to be correct, then proceed with subsequent archiving or distribution.
After completing the save location settings, enter the "Start processing" step and execute the batch processing according to the interface prompts. The software will perform find and replace on the content of each PDF file according to the previously imported PDF list and the set keyword correspondence.
Step 5: Open the processed PDF to check replacement results
After the batch processing is complete, it is recommended to spot-check at least some files, especially when the number of files is large or there are many replacement rules, to confirm that the results meet expectations. In the example, opening the processed PDF shows that the original "April 13, 2017" has changed to "August 13, 2026".
When checking, pay attention to the following key points:
- Whether the keywords that needed replacement have become the target text.
- Whether content that should not be modified remains unchanged, for example, the "13" in the example was not replaced.
- Whether the PDF page layout is normal and whether the text position meets expectations.
- Whether multiple PDFs have all undergone the same replacement rules.
In this way, content updates for multiple PDFs can be completed in a relatively short time, without the need to repeatedly open each file for manual searching.
Frequently Asked Questions and Important Notes
1. Why can't some PDFs have their text replaced?
If the PDF is a scanned copy or image-based PDF, text appears on the page but is actually just part of the image and does not have a searchable text layer. In this case, ordinary text find and replace functions may not be able to recognize it directly. It is recommended to first use a PDF reader to test whether you can select text or search for keywords.
2. How to avoid correspondence errors when replacing multiple keywords?
When setting up the replacement list, maintain a row-by-row correspondence between the left "Keywords to find list" and the right "Replace with keywords list". For example, row 1 April corresponds to row 1 August, and row 2 2017 corresponds to row 2 2026. When adding multiple replacement pairs, it is recommended to organize them in a table or text file first, and then copy them into the software.
3. Is it recommended to overwrite the original PDF directly?
It is not recommended to overwrite the original files directly during the first processing attempt. The characteristic of batch operations is that they affect multiple files at once; if the rule settings are wrong, the scope of impact will also be larger. It is recommended to first output to a new folder, and replace the original files or archive them after confirming there are no errors.
4. How should I choose options for case sensitivity and whole-word matching?
If replacing English content, pay attention to case sensitivity. For example, if you only want to replace "April" and not affect other case forms, you should set the case option carefully. If a keyword might appear inside other words, you can pay attention to "Match whole word only, not part of a word" to reduce incorrect replacements.
Summary
Batch find and replace keywords in PDF files is a typical high-frequency office automation need. For fixed content like dates, years, project names, company names, and numbers, if the method of opening PDFs one by one for manual modification is still used, it is not only inefficient but also difficult to ensure consistency.
Using the "Find and Replace Keywords in PDF" function in " HeSoft Doc Batch Tool ", you can first batch import PDF files, then uniformly set find and replace words, and finally complete the content update for multiple PDFs at once. In this article's example, "April" and "2017" in 4 PDFs were batch replaced with "August" and "2026", and the changes before and after processing are clearly visible.
If you often need to process a large number of PDF reports, contracts, notifications, or data files, it is recommended to incorporate this kind of batch replacement process into daily office standards: back up the original files first, then import them into the batch processing tool, set rules and output to a new directory, and finally spot-check to confirm the results. This can both reduce repetitive work and improve the accuracy and overall efficiency of file processing.