Silence Remover
Remove silence from audio and podcasts online. Auto-trim dead air, long pauses, and quiet gaps from MP3, WAV, M4A, OGG, FLAC in your browser.
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Frequently asked questions
- Are my audio files uploaded to a server?
- No. Silence removal runs entirely in your browser using ffmpeg.wasm. Your audio never leaves your device, which makes the tool suitable for confidential podcast recordings and interviews.
- What audio formats are supported?
- MP3, WAV, M4A, OGG, FLAC, and AAC. The output keeps the input format when possible (lossless WAV/FLAC are preserved); unusual containers fall back to MP3 at 192 kbps.
- What do the threshold and minimum duration settings do?
- Threshold (-60 dB to -20 dB) defines how quiet audio must be to count as silence. Minimum duration (0.3 s to 5 s) is the shortest silence that gets cut — shorter pauses are kept so speech rhythm stays natural.
- What is the difference between Remove and Shorten mode?
- Remove cuts detected silences entirely. Shorten compresses each long silence down to the minimum duration, preserving natural pacing — often better for conversational podcasts where some breathing room helps comprehension.
- Why is the result clipping the start of words?
- The threshold is too high (too strict). Lower it to a more negative value like -45 dB or -50 dB, or raise the minimum silence length so short pauses between words are not treated as silence.
- How long can my audio file be?
- There is no hard limit, but ffmpeg.wasm holds the file in memory. Files under 100 MB (roughly 1-2 hours of podcast audio at typical bitrates) process reliably on most laptops.