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Audio Tools

Audio Volume Booster

Boost quiet audio files or normalize peak levels directly in your browser. Upload MP3, WAV, M4A, OGG, and other audio files, choose a volume adjustment, then export clean MP3 files. Your files stay on your device. Free to use with no account or card needed.

Drop audio files here

MP3, WAV, M4A, OGG, and more. MP4 and video files are not supported. Export as MP3.

  • Free to use
  • No account required
  • Files stay in your browser
  • Boost or normalize audio
  • Export MP3 files or ZIP

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Frequently asked questions

How do I boost audio volume online?
Upload an audio file, choose Boost mode, set a volume level between 25% and 400%, then click Adjust audio. When processing finishes, download the boosted MP3 or export all finished files as a ZIP.
Can I normalize audio with this tool?
Yes. Choose Normalize mode for any uploaded file. The tool measures the loudest peak and adjusts the file near a safe maximum level, which helps quiet recordings play back more clearly.
Is this audio volume booster free?
Yes. This audio volume booster is free to use with no account, card, or software install required.
Are my audio files uploaded to a server?
No. Audio decoding, gain adjustment, normalization, and MP3 export run locally in your browser. Your files are not uploaded to Vidsembly or sent to a third-party server.
What audio formats can I boost or normalize?
You can upload common browser-supported audio formats such as MP3, WAV, M4A, OGG, AAC, FLAC, and audio WebM. MP4 and other video files are not supported. Support can vary slightly by browser.
Can I adjust multiple audio files at once?
Yes. Add multiple audio files, choose boost or normalize for each one, then process them in one session. Download each MP3 separately or export the finished files together as a ZIP.

About this tool

Boost quiet audio without uploading files

This free audio volume booster runs in your browser, so your recording does not need to leave your device just to make it easier to hear. It is useful for quiet voice notes, remote interviews, classroom recordings, training narration, and draft podcast clips.

Boost volume or normalize peaks

Boost mode applies a chosen gain percentage to the file, which is helpful when you know the recording needs a moderate lift. Normalize mode measures the loudest peak and raises the file near a safe maximum level, which can make inconsistent recordings easier to review.

When to adjust volume before sharing

Adjust audio before posting course narration, sending a customer call excerpt, sharing a podcast clip, or placing a voiceover into a video timeline. Clearer playback helps listeners focus on the content instead of reaching for the volume control.

Best formats for browser-based audio boosting

MP3 and WAV files are the most reliable inputs across modern browsers. M4A, OGG, AAC, FLAC, and audio WebM are also supported in many browsers, depending on local codec support. Finished files export as compact MP3 downloads.

Batch volume adjustment and ZIP export

You can queue several files, set a different mode for each recording, and export finished MP3 files individually or as a ZIP. That helps when preparing lesson recordings, interview answers, narration takes, or meeting clips in one pass.

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