Why WAV is heavy
WAV is often uncompressed or lightly compressed. It is great for editing, but it can be too large for email, uploads, and quick sharing.
Best output choices
Use MP3 for broad compatibility, M4A for compact mobile playback, and FLAC when you want a smaller lossless-style archive.
Before deleting the WAV
Keep the original WAV if you plan to edit or master the recording later. Use compressed copies for distribution.