By Team Edtoolkits · Audio
Boost or reduce volume, normalize peaks to a chosen ceiling and remove DC offset.
Use the guide alongside the working tool.
Open Volume Booster & Normalizer →Prepare and preview
Add a recording and trim it if needed.
Choose peak normalization or manual gain. Set a ceiling and optionally remove DC offset.
Prepare the preview, compare levels and download MP3 or WAV.
Limits and output quality
Browser-supported MP3, WAV, M4A, AAC, OGG, FLAC and WebM inputs; mono or stereo only. One file up to 20 MB and two minutes of source audio. Output is limited to two minutes. Processing stays local at 44.1 kHz in a cancellable worker. WAV is 16-bit PCM. MP3 re-encoding is lossy, can add frame padding and may use a lower sample rate at low bitrates. Export metadata is not preserved. The encoder reduces gain when necessary to prevent sample clipping. Peak normalization uses a shared gain across channels and preserves dynamics. It is not LUFS loudness matching, compression, noise removal or clipped-audio repair. Manual gain is capped at the selected sample-peak ceiling. DC offset correction subtracts each selected channel’s mean; it does not remove hum. Gain can increase existing background noise. Silent input remains silent. Reported PCM peaks are measured before export fades and lossy MP3 encoding; true peaks can differ.
Ready to apply this workflow?
Try Volume Booster & Normalizer →Explore a related workflow
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- Voiceover + Music Mixer in your browser
Mix voice and music, loop a backing track, set its start time and lower music automatically during speech.
- Stereo Channel Editor in your browser
Extract left or right, swap channels, mix mono, isolate mid or side, adjust stereo width and invert polarity.
Keep your original files and review the result. Found unclear instructions? Contact Team Edtoolkits.