01Zero upload
Open media locally
Drag and drop your audio or video file. The browser immediately runs a capability preflight and prepares local Web Audio decoding without sending any bytes over the network.
100% Browser-Local Processing · No Account Required
Keep the pause.
Cut the dead air.
AutoSilenceCut finds extended quiet gaps in your recording, then lets you review every proposed cut before you export — right in your browser.
Natural-Pause Workspace
Active DeskReady for a local media file
Audio & video are decoded strictly in local browser RAM. No bytes are sent over the network.
Local Browser Analysis
Scanning for quiet pauses…
Reading media and computing RMS energy…
1Reading file
2Decoding audio
3Scanning quiet
4Building map
0:00 saved
Pause Map & TimelineClick or drag to scrub
0:000:00
Proposed cut (Amber)
Restored pause (Slate)
Playhead / Selected
Lossless Local WAV Export
Rendered locally with 8ms anti-click crossfades. Zero server upload.
Three steps to natural, calibrated pacing
A focused workflow designed to get you from raw take to reviewed export in seconds.
02Reversible
Review proposed cuts
Inspect every detected silence on the interactive waveform. Listen to before/after previews, adjust pacing presets (Natural, Tight, Fast), and restore natural pauses with one click.
03Lossless audio
Export clean media
Download your finished audio as uncompressed 16-bit WAV with smooth 8ms anti-click crossfades. Video preview allows instant verification in sync before saving.
Engineered for human speech rhythm
Why professional creators and audio engineers choose reviewable pacing over blind silence deletion.
Retained Speech Cushion
Natural mode preserves a 0.32s ambient pause around words, preventing clipped consonants and unnatural breathless delivery.
Reversible Decisions
Nothing is deleted until export. Restore single pauses, restore all, and use unlimited undo/redo with full keyboard support.
Anti-Click Crossfading
Splice boundaries apply calibrated 8ms micro-fades to eliminate audio pops and clicks common with crude noise gates.
100% Local Privacy
Zero cloud uploads, zero telemetry trackers, and zero accounts. Confidential recordings remain strictly on your machine.
Purpose-built for your specific recording workflow
Explore specialized guides and optimal pacing configurations for different media types.
Talking-Head & Video
Cut thinking gaps in video lectures, presentations, and webinars while preserving synchronized playback.
Voiceover & Narration
Trim script retries and breath pauses from voice tracks with studio-grade WAV export.
Podcasts & Interviews
Eliminate remote call lag and Zoom silence without clipping natural speaker handoffs.
Dead Air Elimination
Understand the difference between unintentional dead air and intentional dramatic pauses.
Frequently asked questions
Everything you need to know about browser-local silence trimming and privacy.
How does AutoSilenceCut keep my recordings private?+
All silence analysis, waveform rendering, and audio export execute entirely inside your browser using the HTML5 Web Audio API. Your audio and video files are never transmitted to any cloud server or third-party service.
Why does AutoSilenceCut shorten silence instead of deleting it completely?+
Completely deleting all quiet intervals makes spoken delivery feel rushed, robotic, and breathless. AutoSilenceCut preserves a customizable cushion (0.32s by default in Natural mode) around spoken words to keep breathing room and conversational pacing intact.
Can I undo or restore specific cut pauses?+
Yes. Every detected gap is plotted on an interactive pause map and numbered list. You can preview the cut before and after, restore any individual pause with a single click or keyboard shortcut (R), or restore all pauses simultaneously.
What file formats are supported?+
AutoSilenceCut supports standard audio formats (MP3, WAV, M4A, AAC, FLAC, OGG) and video formats (MP4, WebM, MOV) up to 1 GB on desktop and 250 MB on mobile devices.
Is there a watermark or subscription fee?+
No. AutoSilenceCut is completely free to use with zero watermarks, zero usage credits, and no account required.