Loudness Console for YouTube

Independent real-time LUFS, LKFS, VU, True Peak, spectrum and stereo analysis for YouTube playback.

Measure the audio YouTube actually delivers to your Chrome tab. Loudness Console for YouTube adds an on-video metering console for live streams and regular videos, with a separate Studio for reviewing saved sessions. WHAT YOU CAN MONITOR • Momentary, Short-term, and Integrated LUFS/LKFS • Program loudness, LRA, PLR/PSR, and QC events • L/R True Peak, RMS, VU, and peak hold • Linear and radar continuous loudness views • 1/3-octave RTA, waterfall spectrogram, waveform scope, stereo image, and correlation • Video time, live/DVR status, and elapsed measurement time • Expert mode and a clear Simple mode for non-technical users STANDARDS AND REFERENCES Includes profiles for ITU-R BS.1770, EBU R128, ATSC A/85, and ARIB TR-B32. Platform references such as YouTube -14 are clearly separated from standards. Results are measurement aids, not certification. PRIVACY AND OPERATION Audio is analyzed locally in Chrome and is not uploaded. The extension stores only measurement values and session metadata on your device. Measurement starts only after you click the extension button or use its keyboard shortcut. The source player is measured at 100% volume, while monitor level is handled separately and restored when measurement stops. IMPORTANT LIMITS This extension measures decoded tab audio. It cannot measure operating-system volume, sound-driver processing, DAC output, or speakers. Loudness Console for YouTube is an independent open-source project. It is not affiliated with or endorsed by YouTube or Google. Created by Lee Soda with AI-assisted development.