Quick Way to Batch Convert English Letters in File Names to Lowercase


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Content note: This article reflects the software version available when it was published. Interfaces and features may change with updates; please refer to the current software. If you find an error, please let us know.
Software featured in this articleHeSoft Doc Batch Tool
Free DownloadSoftware IntroductionUser Guide

In the process of file management, standardizing the capitalization of letters in file names is an important detail that is often overlooked. When dealing with Linux operating systems that are case-sensitive to file names or in software development scenarios, file names containing uppercase letters can lead to failures in file path recognition or inability to run. Therefore, uniformly converting file names to lowercase not only avoids errors but also enhances the standardization and consistency of file management. In summary, the uniform handling of uppercase and lowercase in file names is not only a good management habit but also an important practice to ensure efficient work and reduce errors. This article provides a detailed explanation of how to batch rename file names containing uppercase letters in an entire folder to lowercase, helping everyone resolve the occasional issue of file name errors.

When does converting uppercase English letters to lowercase in file names occur?

  1. Different operating systems handle case sensitivity differently. For example, Linux distinguishes case in file names. Converting uniformly to lowercase can prevent file access errors and improve compatibility.
  2. Lowercase file names are easier to read and search, making file organization for images, documents, etc., cleaner and more orderly.

Preview of the effect of converting uppercase English letters to lowercase in file names

Before processing:

image-Rename files by changing uppercase letters to lowercase,swapping uppercase and lowercase letters in filenames,and converting uppercase letters to lowercase in filenames.

After processing:

image-Rename files by changing uppercase letters to lowercase,swapping uppercase and lowercase letters in filenames,and converting uppercase letters to lowercase in filenames.

Steps to convert uppercase English letters to lowercase in file names

1. Open 【 HeSoft Doc Batch Tool 】, select 【File Name】-【File Name Case Conversion】.

image-Rename files by changing uppercase letters to lowercase,swapping uppercase and lowercase letters in filenames,and converting uppercase letters to lowercase in filenames.

2. Click 【Add Files】 or 【Import Files from Folder】 on the right to import files that need their uppercase file names converted to lowercase letters. You can also drag and drop files to add them, then click Next.

image-Rename files by changing uppercase letters to lowercase,swapping uppercase and lowercase letters in filenames,and converting uppercase letters to lowercase in filenames.

3. In the options interface, select 【Convert to Lowercase】, then click Next. Then proceed to the save interface, click Browse to choose the save location for the modified files.

image-Rename files by changing uppercase letters to lowercase,swapping uppercase and lowercase letters in filenames,and converting uppercase letters to lowercase in filenames.

4. Wait for the processing to finish, click the red path of the save location to open the folder and view the completed files.

image-Rename files by changing uppercase letters to lowercase,swapping uppercase and lowercase letters in filenames,and converting uppercase letters to lowercase in filenames.


KeywordRename files by changing uppercase letters to lowercase , swapping uppercase and lowercase letters in filenames , and converting uppercase letters to lowercase in filenames.
Creation Time2025-07-04 10:05:53
Software featured in this articleHeSoft Doc Batch Tool
Free DownloadSoftware IntroductionUser Guide
Content note: This article reflects the software version available when it was published. Interfaces and features may change with updates; please refer to the current software. If you find an error, please let us know.