Change File Extension

Related tools

• Filename Privacy Cleaner
• Filename Sanitizer
• Remove Filename Spaces
• Extract File Extension

How it works

1. 1

   Type or paste a filename

   e.g. "report.docx".

2. 2

   Enter the new extension

   With or without the leading dot — e.g. "pdf" or ".pdf".

3. 3

   Copy the result

   The base name stays, only the extension swaps.

FAQ

Does this actually convert the file, e.g. .docx to .pdf?

No — it only renames the extension text; the file content is untouched. Use it to fix a wrong extension, not to convert a file format.

Does this tool upload my filename anywhere?

No — it runs entirely in your browser.