Diagram Maker
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Free Online Audio & Music Editor (Trim, Normalise, Convert)
Cut silence, level out loud parts, change speed and export a clean WAV — decoded and rendered entirely client-side with the Web Audio API.
Why use this instead of doing it manually
Free online audio editor: trim, normalise volume and convert MP3, WAV, M4A or OGG files in your browser with a live waveform. No upload, no install.
| Capability | The manual way | With ContentSERP |
|---|---|---|
| Setup | Install a heavyweight DAW | Drop a file, edit in the tab |
| Privacy | Upload audio to a cloud service | Decoded locally with Web Audio |
| Normalise | Manual gain trial and error | One-click peak normalisation |
| Export | Re-encode in another app | Instant WAV download |
Frequently asked questions
Which formats can I edit?
Anything your browser can decode — typically MP3, WAV, OGG and M4A/AAC. Load it, edit, then export as WAV.
Is the audio uploaded to a server?
No. Decoding and rendering happen in your browser via the Web Audio API; the file never leaves your machine.
What does normalise do?
It scans the waveform for the loudest peak and applies a gain so the track hits a target level, making quiet clips consistent without clipping.
Can I change playback speed?
Yes — adjust the rate to create a quick intro or tighten a pause, then render the result to a WAV file.
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