Is it good for building an even album?

Yes. It is exactly for making every song on a record or playlist play at the same volume.

Does it match by peak or real loudness?

By perceived loudness (similar to LUFS), which is how the ear judges volume, not just the maximum peak.

Yes. You can set a target or use the average, loudest or quietest of your files.

Online audio tool

Is one song louder than another? Match the volume of all your files to the same level for playlists, albums or sets, without guessing.

Target search: match the volume of several songs

Upload two or more songs or audio files.

Choose the target level (or let them match each other).

Compare each file’s level on the chart.

Download each matched version.