Silence Trimmer
Free online silence trimmer. Automatically remove silence from beginning and end of audio files. Adjust threshold and duration. Supports MP3, WAV, OGG, AAC. Fast and easy.
About Silence Trimmer
This online silence trimmer automatically detects and removes silence from the beginning and end of your audio files. It analyzes your audio and trims quiet portions based on your threshold settings, leaving only the actual content. Perfect for cleaning up recordings, podcasts, and voice memos.
What audio formats are supported?
Input: MP3, WAV, OGG, AAC, M4A, and other common formats. Output: You can choose to keep the same format as input or convert to MP3, WAV, OGG, or AAC.
How does silence detection work?
The tool analyzes your audio file and identifies portions where the volume is below the threshold you set (e.g., -40dB) for at least the minimum duration you specify (e.g., 1 second). These portions at the start and end are then removed.
What threshold should I use?
For most recordings, -40dB (Quiet) works well. Use -50dB (Very Quiet) for nearly silent backgrounds. Use -30dB (Moderate) or -20dB (Loud) if your recording has background noise you want to keep. Lower thresholds are more sensitive and detect quieter sounds as silence.
What is minimum silence duration?
This is the minimum length of quiet audio to be considered silence. For example, 1 second means only silent portions lasting 1 second or more will be removed. This prevents removing short pauses in speech.
Does it remove silence from the middle of audio?
No, this tool only removes silence from the beginning and end of your audio file. Silence in the middle is preserved. This is ideal for cleaning up the start and end of recordings without affecting the content.
What is the file size limit?
The maximum file size is 50MB. This ensures smooth processing in your browser.
Can I preview before downloading?
Yes! You can listen to the original audio, then preview the trimmed version to verify that the silence was removed correctly before downloading.
Is my audio file safe?
Absolutely! All audio processing happens directly in your browser using FFmpeg.wasm. Your audio file is never uploaded to any server.
What are common use cases?
This tool is perfect for: cleaning podcast recordings with long silence at start/end, trimming voice memos and interviews, preparing audio for video editing, removing countdown silence before speeches, and batch processing recordings to remove dead air.