Why Spotify turns your master down, what −14 LUFS means, and how to check any file free in your browser.
Free LUFS meter in your browser: integrated, short-term max, momentary max, LRA, true peak and sample peak — no upload, no install.
See how Spotify will normalize your master: reference −14 LUFS, recommended true peak ≤ −1 dBTP (−2 dBTP if your master is louder than −14).
Check your video's audio against YouTube's −14 LUFS normalization reference and a −1 dBTP true-peak ceiling.
Check a podcast episode against the industry standard: −16 LUFS stereo (−19 mono), true peak ≤ −1 dBTP.
Enter your master's LUFS and see exactly how many dB Spotify will turn it down (or up) at the −14 LUFS reference, in all three user settings.
Measure inter-sample true peaks (4× oversampled, BS.1770 Annex 2) and check against the −1 dBTP broadcast/streaming ceiling.
Every tool on ToolJolt is free, runs in your browser and needs no sign-up.