About the Spectrogram
Visualise the frequency content of a whole file — great for spotting noise, hum or hidden images.
How to use it
- Drop a file.
- Choose colour map and frequency scale.
- Download the PNG.
Questions
Log or linear?
Log matches how we hear (more detail in the bass). Linear shows high frequencies more evenly.
Is WaveCraft free?
Yes. Every tool is free with no sign-up, no watermark and no file limits.
Are my files uploaded?
No. All processing happens in your browser on your own device, so your audio never leaves your computer or phone.
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