Audio Loudness Report
Generate mean and peak audio volume estimates as JSON.
How to use Audio Loudness Report
Generate mean and peak audio volume estimates as JSON.
Reports and previews are based on audio stream analysis; they are not proof of audio authenticity.
- Open Audio Loudness Report on Tools4U.
- Upload the supported audio file.
- Adjust any settings, select Process Audio, then wait.
- Preview and download your output within 12 minutes.
Frequently asked questions
Is Audio Loudness Report free?
Yes. Signed-in verified users can process short audio, and Premium members do not see advertisements.
What are the upload limits?
Up to 24 MB per file, 48 MB combined, 180 seconds per track, and 10 jobs per hour. Some effects have shorter input limits.
Where is audio processed?
The audio is processed by an isolated private FFmpeg worker. Outputs are temporary, but you should still avoid uploading confidential material without permission.