Table of Contents
Important Notice: Changing a file extension renames the file only. It does NOT convert the file's actual format data (e.g. renaming
.jpg to .mp3 does not convert image data into audio). Only change extensions when the file content is already compatible with the new extension.Drag & Drop your files here or click to browse
Supports single or batch file uploading
Select Target Extension Preset
Custom Extension:
How to Change a File Extension
Drag and drop your file(s) into the tool, select a new target extension from the category presets (Documents, Images, Audio, Video, Archives, Developer, Office) or type a custom extension, and click Download.
Renaming vs File Format Conversion
Changing a filename extension renames the file label only. It does not alter or re-encode the internal binary data structure of the file.
Frequently Asked Questions
Does changing a file extension convert the file format?
No. Renaming an extension changes the filename only. It does not convert the internal format data.
Are my files uploaded to a server?
No. All renaming and downloads are performed 100% locally in your web browser.
Can I rename multiple files at once?
Yes, you can drag and drop multiple files for batch extension renaming.