Audio Spectrogram
Free online audio spectrogram that runs entirely in your browser. Quickly pinpoint codec, resolution and sync issues. No upload, no watermark, no sign-up.
100% local — files never uploaded100% free
Every feature is free with no usage caps, no length limits and watermark-free exports.
Private by design
Processing happens entirely in your browser — files are never uploaded to any server.
Instant preview
See the result right on the page and download only when you are happy with it.
Online tools
Nothing to install or plug in — open the page and go, on desktop or mobile.
Easy to use
A clean interface with clear steps. No video-editing experience required.
Broad format support
MP4, MOV, MKV, WebM, AVI and more — including formats other tools give up on.
Why use Audio Spectrogram
Free online audio spectrogram that runs entirely in your browser. Quickly pinpoint codec, resolution and sync issues. No upload, no watermark, no sign-up.
100% local processing
Files stay on your device — nothing is uploaded, ever.
Free & watermark-free
Every feature is free with no watermarks or hidden limits.
Batch support
Pair it with batch tools to process whole folders.
No sign-up
No account, no email, no install — open the page and start.
Your files are processed locally on your device and never uploaded to any server.
How to use Audio Spectrogram online
Questions? See the FAQ
Click, drag & drop or paste the file into the workspace.
Pick presets or fine-tune the parameters to your needs.
Everything runs on your device — watch progress in real time.
Preview the result and save it. Nothing is stored anywhere else.
Frequently asked questions
Ready to try Audio Spectrogram?
No sign-up, no watermark, free forever — everything runs locally in your browser.