SoundTweak

Jivaro Tool

SoundTweak

Batch-normalize audio files in your browser. Drop files, review the queue, preview the selected item, normalize loudness, and download individual results or a ZIP.

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Upload

Add multiple audio files to the queue.

Clear All

↥ Drop audio files here or click to browse MP3, M4A, WAV, FLAC, OGG, and most browser-readable audio files.

Queue

Select a file to preview or adjust advanced settings.

No files yet. Add audio files above to begin.

{{ item.name }} {{ item.ext || 'audio' }}

{{ item.sizeText }} {{ formatTime(item.duration) }} {{ item.sampleRate }} Hz {{ item.channels }} ch ~{{ item.bitrateKbps }} kbps {{ item.gainDb > 0 ? '+' : '' }}{{ item.gainDb.toFixed(1) }} dB

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Normalize Download Remove

Preview

Listen to the selected source or processed result.

Select a file from the queue.

Selected: {{ activeItem.name }}

Play Pause Stop Original Processed

{{ formatTime(previewTime) }} / {{ formatTime(previewDuration) }} Estimated loudness: {{ activeItem.loudnessDb.toFixed(1) }} dB

Output Settings

Shared settings apply to files when processed.

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Format WAV MP3 M4A FLAC OGG

Bitrate 64 kbps 96 kbps 128 kbps 192 kbps 256 kbps 320 kbps

Target Podcast / voice Music standard Louder safe

Sample Rate Original 44100 Hz 48000 Hz

Channels Original Mono Stereo

Selected Gain

Advanced selected-file controls {{ settings.advancedOpen ? 'Hide' : 'Show' }}

Trim Start (seconds)

Trim End (seconds)

Fade In (seconds)

Fade Out (seconds)

Title

Artist

Album

Year

Genre

Select a file to edit trim, fade, and metadata fields.

Actions

Normalize, process, and download selected or queued files.

Normalize Selected Normalize All Download Selected Download All as ZIP

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Loudness is estimated in-browser using RMS with peak protection. WAV output is fully browser-native; other formats use FFmpeg WASM when available.