Why no-upload conversion matters
An .aep project can reveal project structure, footage names, text layers, plugin usage and client context. Local processing keeps that data on your device.
How browser processing works
The tool reads the .aep file in browser memory, detects the version and writes a new target copy. It does not require an account or server upload.
Still test the result
Privacy and compatibility are different concerns. Keep a backup and open the downgraded copy in the target AE version before relying on it.