Have you ever encountered the problem of file naming confusion? Obviously want to find a Project file, but because of the inconsistent case of the file name, in the computer turned dizzy. In teamwork, some people use uppercase, some people like to use lowercase, HR file management is like a mess... It's really big! In fact, uniform file name case is not only the gospel of obsessive-compulsive disorder, but also the need for efficient work efficiency! It also effectively avoids cross-platform compatibility issues, improves file retrieval efficiency, and allows teams to collaborate more smoothly. But manually modify hundreds of file names? Think about it!
Don't panic, I will arrange some convenient batch processing tools for you now, which is very fast and convenient! From the operation steps to the advantages and disadvantages are attached with detailed information, hand-in-hand to teach you to batch handle file name case conversion, so that file management from now on worry-free and safe!
Under what circumstances do we need to change the uppercase English letters of the file name to lowercase?
- When it comes to cross-platform compatibility, avoid the case trap: Linux systems are strictly case sensitive to file names, while Windows and Mac are not.
- Multi-team and multi-person collaboration requires standardized requirements to avoid naming confusion and arbitrary use of case, and improve file retrieval efficiency.
- Code management to prevent bugs in case-sensitive error reporting.
- Also in SEO optimization, lowercase file names are more in line with user search habits and can help improve file readability.
Preview of the effect of replacing word file names with lowercase in English batch
before treatment:

after treatment:

method 1: Use HeSoft Doc Batch Tool Replace docx file name case
recommended Index:★★★★★
- Support Word/PDF/Excel/PPT and other format file processing, can be offline processing, suitable for government agencies sensitive data processing.
- Focus on batch processing, support 1000 file synchronization, very quickly.
- Friendly interface, a few simple steps to complete the operation.
- Automatically generate operation logs to meet compliance requirements.
- There is also a file encryption function, there is also a close encryption function, you can also convert the format, support one-stop operation.
Disadvantages:
- is the need to download software to install, occupy memory.
- It only supports windows systems and cannot be downloaded on mobile devices such as mobile phones.
Operation steps:
1. Open 【 HeSoft Doc Batch Tool ], select the [File Name] button-find the [File Name Case Conversion] function.

2. Click [Add File] or [Import File from Folder] on the right in the upper right corner of the page to import the files that need to convert uppercase file names into lowercase English letters in batch, or drag the files into for direct addition, and then click Next.

3. Select [Convert to Lowercase] in the options interface, then click Next, then enter the save interface, and click Browse to select the save location of the modified file.

4. Wait for the processing to end. Click the red path of the save location to open the folder to view the modified files.

Method 2: Use the ReNamer Web to modify the case of the file name.
Recommended Index:★★★☆ ☆
advantages:
- supports real-time preview, and displays the effect immediately after modifying the rule.
- Provides the function of saving rules and can reuse common naming templates.
- Support multi-language interface, including Chinese, user-friendly, super suitable for cross-international collaboration projects.
- File processing is faster, and the preview function can adjust the rules in real time.
Disadvantages:
- the free version only supports 20 files at a time, and the paid version is unlimited.
- The server response speed is slow, and the peak period may be stuck.
- Server response delay, affecting the smooth operation.
Operation steps:
1. First, open the tool website, click Add Files to upload the required files, click Add Rule in the Rules panel, and then select Case Change.
2. Then check To Lower Case in the next step and click Preview to view the effect.
3. Click Apply after confirmation to download the file.

Method 3: Use File Renamer Basic to handle file name case conversion
recommended Index:★★★☆ ☆
advantages:
- completely free, no file limit.
- Support drag and drop upload, simple operation, suitable for novice.
- Provide revocation function, one-click recovery after misoperation.
- Upload hundreds of text files, processing takes only a few seconds and is extremely fast.
Disadvantages:
- single function, only supports basic case conversion and batch replacement.
- No cloud storage integration, you need to manually upload and download files.
- The functionality is too basic to meet complex naming needs.
Operation steps:
1. First, we visit the official website and click Drag & Drop Files Here to upload files.
2. Then select the Lower Case option in the Case drop-down menu, and click the Rename button to wait for the processing to complete.
3. Click on the Download All to download the file after the processing is completed.

Method 4: Use the text content batch replacement tool to handle the replacement of file name case
recommended Index:★★★☆ ☆
advantages:
- multi-format compatibility: supports plain text, HTML, Markdown and other formats.
- Support real-time preview, you can view the results before replacing.
- Online operation without installing any software, does not take up space.
Disadvantages:
- non-professional file tools: need to manually copy the file name to the text box processing.
- Functional limitations, only suitable for simple replacement, batch file processing is not recommended.
Operation steps:
1. First open the URL and manually copy the file name to be modified to the text box.
2. Set replacement rules and enter the original keyword and the new keyword.
3. Click the [Replace] button to perform the replacement, copy the result, and paste the modified file name back to the file attribute.

Method 5: Use the Online File Renamer to operate the file name.
Recommended Index:★★★☆ ☆
advantages:
- drag sort, support file order adjustment, suitable for sequential renaming.
- Custom output, you can specify the output folder.
Disadvantages:
- advertising interference, page advertising more.
- File size limit, maximum support 200MB files.
- Personal privacy cannot be guaranteed, and important documents are not recommended.
Specific operation steps:
1. After opening the correct web page link, you can drag the file directly to the upload area.
2. Set classification rules, select the first word in the classification column, and enter Chinese or English mode.
3. Then check Overwrite and select Overwrite Existing Files to avoid duplication.
4. Perform classification, click Rename, download the file after a while, and click Download All.

Summary
batch modification of file name case seems to be a trivial matter, but it is actually a necessary artifact to improve efficiency! From cross-platform compatibility to team collaboration, from code management to SEO optimization, unified naming rules can help you avoid countless pits. The above I introduce these tools, each has its own advantages, but if you need a large number of enterprise-level operations, want to get fast and good processing results, but also to ensure the privacy and confidentiality of your file content...... In general, the first method is better and more recommended! I hope that after reading this article, whether you are a developer, designer or ordinary office worker, you can find the one that suits you! Next time you encounter the problem of file name confusion, try these tools to save time and effort in file management! After all, spending time on more valuable things is a truly efficient life.