View a full-track spectrogram, find the high-frequency cutoff, and compare it with the file’s declared quality.
Drop tracks here or choose Add Files to begin.
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Lossy encodes often leave characteristic high-frequency cutoffs. A mismatch between that pattern and the declared bitrate is a reason to verify the source, not an absolute verdict.
FLAC and WAV can preserve audio that already came from a lossy source. A lossless container prevents further codec loss; it cannot recreate missing detail.
MP3, FLAC, WAV, and OGG share the same full-track view and cutoff estimate, so you can inspect them with one workflow.
No. A 128 kbps encode often stops near 16 kHz and a 320 kbps encode often reaches closer to 20 kHz, but the encoder and master can change that pattern.
It may come from a lossy source, but the original recording or master may also have been low-pass filtered. The cutoff is a clue, not proof of transcoding.
It provides a similar full-track spectrogram plus an automatic cutoff estimate. Neither tool turns a cutoff alone into forensic certainty.
Analysis runs on your device, so its speed mainly depends on CPU performance, available memory, and track length; long tracks and lower-powered devices take longer. If analysis fails, close memory-heavy tabs or apps and try again with the latest browser version. If it still fails, use a computer with more available memory.
Get the latest Google ChromeUse the audio formats guide to understand lossy versus lossless tradeoffs, the converter when you need a different format, and the BPM changer for tempo preparation.