Audio Trimmer
Audio Trimmer lets you cut a section out of an audio file without installing sof
Audio Trimmer lets you cut a section out of an audio file without installing sof
How to use Audio Trimmer
- Choose an audio file to load it into the trimmer.
- Drag the start and end sliders (or type exact seconds) and preview the selection.
- Click Trim & Download WAV to save the clipped audio.
About Audio Trimmer
Audio Trimmer lets you cut a section out of an audio file without installing software or uploading anything. Pick a file, drag the start and end sliders (or type exact seconds), preview the selection to hear precisely what will be saved, then download the trimmed clip.
It works entirely in your browser using the Web Audio API. Your file is decoded locally, the region you choose is copied out, and the result is written as a 16-bit PCM WAV — a lossless format that plays everywhere. An optional tiny fade in/out smooths the cut so you don't get a click at the edges. Because the export is WAV, the trimmed file is uncompressed and will typically be larger than an equivalent MP3; you can re-encode it later if you need a smaller file.
Nothing is sent to a server, so your audio stays private on your device. The tool can open any format your browser can decode (commonly MP3, WAV, OGG, M4A, and AAC); very unusual or DRM-protected files may fail to decode.
Frequently asked questions
- What audio formats can I trim?
- Any format your browser can decode, which usually includes MP3, WAV, OGG, M4A, and AAC. The trimmed output is always saved as a lossless WAV file.
- Is my audio uploaded anywhere?
- No. The file is decoded and trimmed entirely in your browser using the Web Audio API. Nothing is uploaded, and no sign-up is required.
- Why is the downloaded file a WAV, and why is it bigger?
- WAV is uncompressed and lossless, so it preserves quality and plays on any device. That also makes it larger than a compressed MP3. If you need a smaller file, re-encode the WAV to MP3 afterward.
- How precise is the trim?
- You can set start and end points to a hundredth of a second with the sliders or number boxes, and the cut is made at the exact sample position. Use the preview button to confirm the selection before downloading.
- What is the fade in/out option for?
- Cutting audio mid-waveform can cause a small click or pop. The optional fade applies a very short (about 8 ms) ramp at each edge so the clip starts and ends cleanly.
- Is there a length or file size limit?
- There's no fixed limit, but the whole file is decoded into memory, so very long or large files may be slow or fail on low-memory devices. Trimming shorter files is fast and reliable.