LUFS Checker

The LUFS Checker is a web-based analysis tool that measures LUFS loudness from an uploaded audio file, producing Integrated, Momentary, and Short-term LUFS values along with true peak and loudness range. It implements standard-compliant metering (ITU-R BS.1770-4, EBU R128) to support consistent loudness across assets. Conceptually, the tool decodes the audio, applies K-weighting, and aggregates loudness over defined windows to yield file-wide and per-window metrics. It is useful for podcast producers, music masters, QA teams, and broadcast coordinators who must assess and align loudness targets before distribution. Unique value lies in combining standard-compliant analysis with easy export options and per-file summaries, enabling rapid benchmarking against target LUFS levels. Core features include file upload, integrated/momentary/short-term LUFS calculation, true peak measurement, and a concise result summary. Optional capabilities include per-channel analysis, batch processing via API, CSV export, and target loudness comparisons to streamline workflows. Use cases span pre-release mastering, broadcast compliance checks, and on-the-fly loudness QA during post-production. The tool emphasizes accuracy, standard adherence, and interoperability with downstream systems, making it suitable for both independent creators and production teams.