Everyday tool
Audio Spectrogram — View Sound Frequencies Locally
Choose an audio file to see how its frequencies change over time. No upload.
The chosen file stays in this browser and is not uploaded.
File size limit: 25 MB. Keep the clip under 3 minutes. Audio analysis uses device memory and processing.
A spectrogram shows frequency energy over time; it is not a calibrated measurement.
No audio selected.
About this tool
Audio Spectrogram — View Sound Frequencies Locally made simple.
This is a basic linear-frequency visualization for supported browser audio formats, not a calibrated measurement or speech-analysis tool. File decoding and rendering use your device. Keep clips short; larger files need more memory and processing.
Common questions
About Audio Spectrogram — View Sound Frequencies Locally.
How do I use Audio spectrogram?
Choose an audio file to see how its frequencies change over time. No upload.
Is my data uploaded to a server?
No. This tool runs locally in your browser. Your input is not uploaded.