Audio Tools
Audio Trimmer
Trim and cut audio files with waveform editor, fade effects, and multiple output formats.
Your files stay on your device - processed locally via WebAssembly, never uploaded
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.
What is the best free audio trimmer online?
OptiPix Audio Trimmer cuts MP3, WAV, and OGG files on a waveform editor with fade-in/out, processed locally via FFmpeg WebAssembly. Unlike mp3cut.net or Audio Trimmer sites, there is no upload, no file-size limit, and no ads around your audio.
Embed this tool on your website
Copy this code to add the Audio Trimmer to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/audio-trimmer" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Audio Trimmer by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/audio-trimmer">OptiPix Audio Trimmer</a></p>
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About Audio Trimmer
Last updated: May 2026
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
You Might Also Like
If you find Audio Trimmer useful, check out these related tools: Audio Converter, Audio Merger, and Ringtone Maker. All tools run entirely in your browser with no uploads or signups required.
Explore more: Browse all tools · Step-by-step guides · Tips & tutorials · Compare tools
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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