Audio Tools
Audio Trimmer
Trim and cut audio files with waveform editor, fade effects, and multiple output formats.
Drop audio file or click to upload
MP3, WAV, OGG, FLAC, AAC, M4A, WebM
🔒 Your audio files are processed in your browser. OptiPix never hears your recordings.
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About Audio Trimmer
OptiPix Audio Trimmer lets you cut and trim audio files directly in your browser. Upload MP3, WAV, OGG, FLAC, AAC, M4A, or WebM files and see a visual waveform display. Drag selection handles on the waveform to choose exactly which part to keep or remove. Add fade-in and fade-out effects for smooth transitions. Export in multiple formats including MP3, WAV, OGG, FLAC, and AAC with adjustable bitrate. The waveform editor supports zoom, precise time input, and keyboard shortcuts for frame-accurate editing. Uses FFmpeg.wasm for high-quality encoding — everything runs locally in your browser. Your audio files are never uploaded to any server.
How It Works
The tool decodes your audio file using the Web Audio API to generate a visual waveform. You select the segment using draggable handles or precise time inputs. FFmpeg.wasm then encodes the selected segment with your chosen format, bitrate, and fade effects — all running locally in your browser.
Use Cases
- •Cut a song segment for a ringtone
- •Trim podcast intros and outros
- •Extract a clip for TikTok or Instagram
- •Remove silence from voice recordings
- •Create audio samples for music production
Frequently Asked Questions
What audio formats are supported?
Can I add fade effects?
Is my audio uploaded to a server?
Can I make precise cuts?
What bitrate options are available for MP3?
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