Audio Trimmer

About Audio Trimmer

This online audio trimmer allows you to cut and trim audio files directly in your browser. Simply select an audio file, choose the start and end time using the timeline or manual input, and trim your audio. All processing happens locally for complete privacy.

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 do I trim an audio file?

Upload your audio file, play it to find the section you want to keep, then use the 'Set as Start' and 'Set as End' buttons to mark your trim points. You can also manually enter the start and end times. Click 'Trim Audio' to process.

What is the file size limit?

The maximum file size is 50MB. This ensures smooth processing in your browser. For larger audio files, consider using desktop audio editing software.

Will trimming affect audio quality?

Using 'Copy' quality mode trims the audio without re-encoding, preserving 100% original quality (fastest). Other quality modes will re-encode the audio with your chosen bitrate settings. This tool uses FFmpeg.wasm for professional-grade audio processing.

Can I preview before downloading?

Yes! The audio player shows the exact section that will be trimmed. You can play the selected portion to verify it's correct before downloading. After trimming, you can also preview the final trimmed audio.

Is my audio file safe?

Absolutely! All audio processing happens directly in your browser using FFmpeg.wasm (WebAssembly). Your audio file is never uploaded to any server. Everything stays private on your device.

Why does FFmpeg take time to load initially?

FFmpeg.wasm is a powerful audio/video processing library (about 30MB) that runs in your browser. It only needs to load once per session. After loading, all trimming operations will be fast and efficient.

Can I trim multiple sections?

Currently, this tool supports trimming one continuous section per operation. To create multiple clips, trim each section separately and download them individually.

How long does trimming take?

Trimming time depends on your audio file length and device performance. A typical 1-minute trim takes 5-15 seconds. Longer audio files or slower devices may take more time. Using 'Copy' quality is much faster as it doesn't re-encode.

What quality settings should I use?

Use 'Copy' for fastest processing and original quality. Use 'High' (320kbps for MP3) for best quality with re-encoding. Use 'Medium' (192kbps) for balanced quality and file size. Use 'Low' (128kbps) for smaller file sizes.