File Impersonator

File Impersonator does one peculiar thing: it renames the files in one folder to match the filenames found in another folder, in alphabetical order. Same number of files, same order, different names — without touching the file contents.

What it does

You have folder A with 1,000 files. You have folder B with 1,000 files that you wish had the names from folder A. Two Explorer windows and a lot of clicking would take a day. File Impersonator does it in ten seconds.

Pair the folders, press the button. The Nth file in folder A (alphabetic order) is renamed to the same filename as the Nth file in folder B. File contents are never modified — only names change.

When you need it

• You re-rendered a video set and the new files have generic names — you want them to match the original filenames
• You processed a batch of images and the output names don't match the source set
• You translated a set of subtitle files and need the translations to share names with the originals
• You converted audio formats and the encoder lost the original filenames

Features

• Compact single executable
• Pair folders by alphabetic order
• File contents untouched — renames only
• Portable, no installer, no registry edits

System requirements

• Windows 7, 8, 10, 11
• A few MB of free RAM
• Under 1 MB of disk space