How frustrating is chaotic file naming? Project documents are mixed with keywords like "2024 version," "old version"... and to find the latest file, you have to rummage through the entire folder; after a company name change, the old name in all contract templates is as stubborn as a stubborn rash, not to mention those wild naming conventions with mixed case and inconsistent symbols—each file search feels like playing a guessing game... How can we batch replace some identical keywords in file names? This is a problem.
Don't panic! The "black technology" for batch replacing file names is here! This article will immediately recommend 5 tools for batch replacing file names, including no-registration-required foolproof tools and enterprise-grade tools for quickly processing large batches of files and multiple documents. I will also analyze the use cases and necessity of batch replacing the same keyword in file names from aspects like project iteration to brand upgrades, error correction to multi-language adaptation! Whether you're a computer novice or a tech expert, you can find the most suitable solution here.
When do you need to batch replace keywords in file names?
In daily work and study, file naming conventions directly affect information retrieval efficiency and team collaboration experience. Batch replacing a single keyword A with B in file names becomes a necessity in the following situations:
- Project cycle iteration, such as changing document names from 2024 to 2025.
- During a company name change, all contract names need modification; batch tools prevent omissions and ensure consistency in external documents.
- For standardizing naming conventions, unifying formats, and improving readability.
- And when spelling errors or version number mistakes are found in file naming, batch operations can correct them all at once!
Preview of batch replacing the year in Word file names
Taking the file name replacement for Word documents like .docx as an example,
Before processing, the year date is 2024:

After processing, all are batch changed to 2025:

Method 1: Use HeSoft Doc Batch Tool for batch replacement
Recommendation Index: ★★★★★
Pros:
- Supports synchronous multi-keyword replacement and can handle 1000+ files.
- Provides a preview feature to avoid operational errors.
- Localized processing, data does not leave your device, fully ensuring personal and organizational privacy security.
- No manual modification or replacement needed; the system operates automatically, avoiding errors while greatly improving efficiency and reducing labor costs.
Cons:
- Requires installation and download to use, taking up storage space.
- Requires a Windows system to support download; does not support mobile devices like phones or tablets, making mobile office work impossible.
Operation Steps:
1. After downloading the software, open the HeSoft Doc Batch Tool as shown below, select [File Name] — click [Find and Replace Keywords in File Names].

2. [Add Files] to add single or multiple files whose names contain keywords like dates that need changing.
[Import Files from Folder] imports folders containing a large number of files whose names have keywords like dates that need changing.
Of course, you can also directly drag and drop all files into the area below in one go.

3. After adding the files, proceed to the next step, then select the precise [Search Method], enter the text content to find and replace in the file name under [Find Files].
Enter the replacement text content under [Replace With]. If you need to delete it, simply leave this field blank.

4. Wait a moment for the processing to complete, then click to view the save location for the files with replaced names.

Method 2: Use the WebRename online batch file renaming tool
Recommendation Index: ★★★☆☆
Pros:
- No download or installation required; operates directly in the browser, supporting mainstream browsers like Chrome and Edge.
- Privacy and security: data is processed only locally and not uploaded to servers.
- Comprehensive features: Supports over 10 modes including replace, insert, truncate, random naming, etc., which can be combined, such as truncating after replacing.
- Large file support: Can process thousands of files at a time, with no file size limit, and supports folder uploads.
- Real-time preview: Preview the effect before modification to avoid operational errors.
Cons:
- Browser compatibility: Lower browser versions may not run properly; requires the latest version of Chrome or Edge.
- Trial period limitation: Currently a free trial period, may charge fees in the future.
Operation Steps:
1. Add files: click the upload area on the page, select files or folders; drag-and-drop addition is also supported.
2. Select mode, switch to the Replace tab, and input the original keyword A and the new keyword B.
3. Click preview; the modified names will be displayed in the file list.
4. After confirming there are no errors, click apply, then download the files. You can choose to download individually, as a ZIP package, or one by one.

Method 3: Use the iRenamer multilingual tool to perform replacement
Recommendation Index: ★★★☆☆
Pros:
- Multilingual support: Includes a Chinese interface, suitable for international users.
- Backup feature: Can automatically back up original files.
Cons:
- Free version limitation: Only supports 10 files per session.
- Server speed: Overseas servers, relatively slow response.
Operation Steps:
1. After entering the website link, first switch the language: you can select Chinese at the top of the official website.
2. Click to select and upload files, then set the replacement rule: Enter the original keyword A and the new keyword B in the replacement bar.
3. Check the option to back up original files, then click preview to inspect.
4. Execute the replacement: click [Start Renaming], and finally download the files. It's very simple.

Method 4: Use a text content batch replacement tool to process filenames
Recommendation Index: ★★★☆☆
Pros:
- Multi-format compatibility: Supports plain text, HTML, Markdown, and other formats.
- Real-time preview: Can view the result before replacement.
Cons:
- Not a professional file tool: Requires manually copying filenames into the text box for processing.
- Functional limitations: Only suitable for simple replacements.
Operation Steps:
1. First, open the website and manually copy the filenames that need modification into the text box.
2. Set the replacement rule: input the original keyword and the new keyword.
3. Click the [Replace] button to execute the replacement, then copy the result and paste the modified filename back into the file properties.

Method 5: Use the online simulation version of ReNamer to replace Word file names
Recommendation Index: ★★★☆☆
Pros:
- Multi-rule combination: Supports various operations like adding, deleting, and replacing.
- Has a renaming log, making it easy to trace modification records.
- No need to download any third-party software.
Cons:
- Free version limitations, high cost, only supports 10 files per session.
- Slow server response, also limited by network connection or file size.
Operation Steps:
1. First, visit the official website and click Start Online, then click [Choose Files] to upload the files whose names need replacing.
2. Next, add a rule: select Replace in the Rules bar, input the original keyword and the new keyword, then click Preview to check.
3. Execute the replacement: directly click [Rename], wait for a moment, and then download the files by clicking Download.

Summary:
Batch replacing keywords in file names may seem like a small feature, but it is actually an invisible lever for improving efficiency. When project cycles iterate, brands upgrade, or naming conventions need adjustment, everyone has experienced the pain of manually modifying hundreds or thousands of file names. The 5 online tools recommended in this article are precisely the weapons to solve this problem.
From beginner-friendly ones to advanced tools supporting regular expressions, from lightweight applications requiring no registration, to enterprise-grade solutions offering backup features... Each tool is optimized for different scenarios. More importantly, most of them support local processing, requiring no upload of sensitive files, making them both efficient and secure. Next time you encounter a situation needing batch filename modification, give these tools a try. An operation of just a few seconds or minutes can save a vast amount of repetitive labor, freeing up time for more valuable tasks~ After all, efficiency is the core competitiveness in the workplace and learning! According to your personal habits and specific needs, choose a method and follow the steps, bid farewell to filename anxiety from now on!