Audio Volume / Fade In/Out
Adjust volume level, add fade in/out effects, and normalize loudness. All processing happens locally in your browser — no files uploaded, completely free.
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点击选择，或把音频拖到这里
调整音量大小、添加淡入淡出、一键响度归一 · 全程本地处理，不上传服务器
FAQ
How much can volume be increased?
Up to 300%. Excessive amplification may cause distortion; we recommend using "Loudness Normalization" for more stable results.
What is loudness normalization?
Automatically adjusts the entire audio to a consistent, optimal loudness level (around -16 LUFS), ideal for uniform listening experience across multiple clips. When enabled, manual volume multipliers are ignored.
How do I use fade in/out?
Enter the duration in seconds for fade-in and fade-out. The audio will gradually increase in volume at the start and decrease at the end.
Are my files uploaded?
No. All processing is done entirely within your browser — audio never leaves your device or goes to any server.
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