Extension Case Converter

Tool Guide

Tool Overview

The online file extension case converter can batch-convert file extensions in a path or file list to uppercase or lowercase. The tool only processes file extensions; it does not touch paths, file names, or parameters.

Sometimes file extension cases are inconsistent, and because file names and other information must not be changed, you cannot simply convert all the list text to uppercase or lowercase. In that case, use this tool to batch-process file extension case.

The tool supports file lists that carry paths, file names, and GET query parameters. You can click "Show Example" to view sample data for a quick trial.