When multiple Excel reports, lists, and ledgers need to be sent to others for review, setting read-only passwords on files one by one is not only time-consuming but also prone to omissions. This article explains how to use HeSoft Doc Batch Tool to batch-add a file content read-only password to multiple xlsx files, allowing recipients to open and view them in read-only mode, but requiring a password before saving any modifications, thereby reducing the risk of accidental changes or overwriting of the spreadsheet content.
In daily office work, Excel files often need to be circulated between departments, such as product lists, sales ledgers, financial statistics, project schedules, inventory details, etc. Often, we hope that colleagues, clients, or external collaborators can open and view these xlsx, xls spreadsheets, but we don't want them to freely modify formulas, data, headers, or formatting. If there are only one or two files, manually setting passwords one by one in Excel is acceptable; but if a folder contains dozens or even hundreds of Excel files, opening, saving as, and setting read-only passwords individually becomes very repetitive and error-prone.
The problem this article aims to solve is: How to batch-add file content read-only passwords to many Excel files, so that when others open the files, they can choose "Read Only" to view, but if they want to obtain write or modify permissions, they need to enter a password. Combined with screenshots, the following will introduce how to use the Excel password protection feature of the office software " HeSoft Doc Batch Tool " to complete batch processing.
Applicable Scenarios: Which Excel files are suitable for batch adding content read-only passwords
Batch setting Excel content read-only passwords is suitable for files that need to be shared for viewing but not edited at will. It is not simply for hiding file content, but to reduce inadvertent modifications, overwriting, and version confusion.
- Sending quotes and product lists to external parties: Clients can view product names, prices, specifications, and other information, but should not directly modify the source file content.
- Sharing statistical reports within departments: For example, daily sales reports, inventory ledgers, procurement summary tables, where there are many viewers but few maintainers, setting a read-only password can reduce the probability of erroneous changes.
- Archived Excel files: Confirmed data such as annual data, monthly settlement tables, and historical records, which are not intended to be arbitrarily changed later.
- Workbooks containing formulas: Many xlsx files contain formulas, references, and formatting. Misoperation can lead to abnormal calculation results, so adding a content read-only password serves as a reminder and restriction.
- Table templates for bulk distribution: Templates can be viewed and copied for use, but the original file is not intended to be directly overwritten.
The value of using a batch processing tool becomes very apparent, especially when there are many files. It can import multiple Excel files at once, uniformly set file content read-only passwords, reduce repetitive labor, and prevent missing the protection setup for a file.
Effect Preview: Differences Before and After Processing
Before Processing: Excel files can be opened and edited directly
Before processing, when an Excel file is opened, you can normally enter the worksheet interface. The cells, formula bar, and sheet tabs in the table are all in a viewable state. For files without additional protection, users can usually directly edit cell content, modify formulas, or save and overwrite the original file.
As shown in the figure below, before processing, the xlsx file can be opened directly to the table content page, which includes product list data, column headers, quantities, units, remarks, and other information.

If these files need to be sent to multiple people for viewing, a problem easily arises when a read-only password is not set: someone might only want to browse but accidentally modifies a cell; or the recipient saves and overwrites the original file, making the version untraceable.
After Processing: Prompted to enter password for write permission upon opening, or can open as read-only
After batch adding file content read-only passwords, when you open the Excel file again, a password prompt window will appear. The window prompts that a password is needed to obtain write permission, or the file can be opened as read-only. This means that someone without the password can still choose "Read Only" to view the file, but cannot directly edit in writable mode and save the original file.

From the effect point of view, this protection method is very suitable for scenarios where "viewing is allowed, but modifying the original is not permitted." It reminds the user at the first moment of opening the file: This file has modification permission protection set; if you are only viewing, please click "Read Only".
Operating Steps: Using HeSoft Doc Batch Tool to Batch Add Excel Read-Only Passwords
The complete process is explained below according to the order of the operational screenshots. The software used in this article is " HeSoft Doc Batch Tool ". Its positioning is an office file batch processing tool, capable of executing batch conversion, batch encryption, batch organization, and other tasks for office files like Excel, Word, PDF, and images. Here we are using the "Excel Add Password Protection" feature in the Excel tools.
Step 1: Enter the Excel tools and select "Excel Add Password Protection"
After opening HeSoft Doc Batch Tool , select "Excel Tools" in the left function category. The right side will display multiple batch processing functions related to Excel files, such as Find and Replace, Convert Format, Export Images, Add Password Protection, Remove Password Protection, etc.
Find "Excel Add Password Protection" in the function list. The description for this feature in the screenshot is "Batch add file open passwords, read-only passwords, and other protection measures to Excel," which aligns with the requirement of this article: batch adding file content read-only passwords to multiple Excel files to prevent arbitrary modification by others.

The purpose of selecting this function is to enter the dedicated Excel encryption protection wizard. Unlike manually opening Excel settings, a batch tool can process multiple xlsx files at once, suitable for situations where multiple reports or lists in a folder need unified protection.
Step 2: Add the Excel files to be processed
After entering the "Excel Add Password Protection" page, you can see buttons like "Add Files," "Import Files from Folder," "Clear," and "More" at the top of the interface. For a small number of files, you can click "Add Files" to select manually; if the files are concentrated in a single directory, you can use "Import Files from Folder" to import all Excel files within that folder at once.
The screenshot shows that 4 xlsx files have been imported, with filenames 1.xlsx, 2.xlsx, 3.xlsx, 4.xlsx. The list also displays information such as file path, extension, creation time, and modification time, facilitating verification that the correct files were selected before processing.

The purpose of this step is to establish a list of files pending processing. Before clicking "Next," it is recommended to check three points: first, whether the number of files is correct; second, whether the path is the directory to be processed; third, whether the extensions are the target Excel file formats, such as xlsx, xls, etc. If you find wrongly selected files, you can remove them via the delete operation on the right side of the list, or use "Clear" to re-add them.
Step 3: Set processing options, enable "File Content Read-Only Password"
After adding files, click "Next" at the bottom to enter the "Set processing options" page. This page offers different protection options, as shown in the screenshot, including "File Open Password," "File Content Read-Only Password," "Restrict Editing Password," etc.
The goal of this tutorial is to prevent others from modifying file content while allowing them to view it in read-only mode, hence the need to enable "File Content Read-Only Password." In the screenshot, this option has been turned on, and the example password "123456" has been entered below.

A key point to understand here is: The file content read-only password is typically used to control write or modify permissions. After setting, users will see a password prompt when opening the file. Entering the correct password grants write permission; without the password, they can choose to open as read-only. It is very suitable for table distribution scenarios requiring "readable but not arbitrarily editable".
If your need is "cannot open the file at all without a password," then you should pay attention to the "File Open Password" option; if your need is to restrict specific editing behaviors within a worksheet, it might involve other editing restrictions. The scenario in this article is batch adding content read-only passwords, so just setting up the "File Content Read-Only Password" is sufficient.
Step 4: Continue to the next step, set the save location and start batch processing
After setting the read-only password, click "Next" at the bottom of the page. According to the interface wizard, the subsequent steps include "Set Save Location" and "Start Processing." The purpose of this step is to determine where the processed files will be saved, to avoid directly overwriting important original files or causing version confusion.
It is recommended to preferentially save the processed files to a new output folder, such as directories named "Added Read-Only Password," "External Sending Version," or "Read-Only Protected Version." This preserves the original files and facilitates subsequent verification of the processing results. If everything is confirmed correct, proceed to start the processing step according to the page prompts.
Once batch processing begins, the software will add the content read-only password to each Excel file in the import list one by one. Compared to manually opening and setting files individually, this method significantly reduces repetitive clicking, waiting, and saving operations, especially suitable for office scenarios involving batch processing several dozen xlsx files.
Step 5: Open the processed file and verify the read-only password effect
After processing is complete, it is recommended to randomly open one or a few files for checking. The verification method is simple: double-click the processed Excel file. If a prompt appears saying "Enter password to obtain write permission, or open as read-only," it indicates the content read-only password has taken effect.
In the effect screenshot, a password window pops up when Excel opens, with a "Read Only" button on the lower left. Users without the password can click "Read Only" to view; those needing to modify and save the original file need to enter the correct password.
Through this step, you can confirm whether the batch-added password protection meets expectations. For files officially sent out, it is recommended to complete a spot check before sending to ensure each batch of files has been protected as required.
Frequently Asked Questions and Precautions
1. What is the difference between a file content read-only password and a file open password?
A file open password is typically used to restrict opening the file itself; without the password, the content cannot be viewed. A file content read-only password focuses more on restricting write permissions. Users can choose to open and view in read-only mode, but if they want to open in writable mode and save modifications, they need to enter a password. This article introduces the latter, which is more suitable for preventing inadvertent modification and protecting the original spreadsheets.
2. After setting a read-only password, can others still copy the content?
A read-only password is primarily used to control modification and save permissions, and is not equivalent to anti-copy, anti-screenshot, or data encryption isolation. If the file content itself is highly sensitive information, it should be protected comprehensively by combining file open passwords, permission management, control over the distribution scope, etc.
3. Why is it recommended to save to a new folder?
Preserving the original files is very important when batch processing files. Saving the processed xlsx files to a new directory makes it convenient to compare the effects before and after processing, and also retains a backup in case of incorrect password entry, wrong file selection, or the need for reprocessing later.
4. How should passwords be set and managed?
It is recommended not to use overly simple or easily guessed passwords, such as 123456, company abbreviations, dates, etc. Although an example password was used in the screenshots, in actual office work, a more secure password should be set and properly recorded. When batch processing multiple files, if the same read-only password is used uniformly, management is more convenient; if different files require different permissions, planning should be done in advance.
5. Do Excel files that are open need to be closed before processing?
It is recommended to close the pending Excel files before batch processing. If a file is occupied by Excel or another program, it may affect the saving or processing results. It is a safer practice to organize the folder and close relevant workbooks before batch processing.
Summary: Use batch processing tools to reduce repetitive work and make Excel sharing more controllable
Adding a content read-only password to Excel files is a very practical way of office protection. It neither prevents others from viewing the table content nor sets a permission barrier before modifying and saving, reducing issues of inadvertent modification, deletion, and overwriting. For multiple xlsx, xls files, manually setting them individually is not only inefficient but also prone to missing files.
With the "Excel Add Password Protection" feature of HeSoft Doc Batch Tool , you can import multiple Excel files at once, uniformly enable the "File Content Read-Only Password," and then follow the wizard to set the save location and start processing. The entire process is clear and suitable for high-frequency office scenarios like batch report distribution, archived file protection, and sending lists externally.
If you are currently setting read-only passwords for a large number of Excel files one by one, it is recommended to first gather the files into a single folder, then use a batch processing tool to complete the task uniformly. This saves time and makes file sharing and permission control more standardized.