Audio Trim
Trim audio to a specific start–end range with optional fade in/out. Decodes any browser-supported format (MP3, WAV, OGG, M4A, FLAC) and exports a lossless WAV.
Decodes any browser-supported audio format and exports a WAV with samples between start and end. (Re-encoding to MP3/OGG is not supported client-side without large encoders — WAV output is lossless and universally compatible.)
→ Send output to:
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How to use Audio Trim
- Pick an audio file.
- Set start and end (seconds).
- Optionally add fade-in/out (milliseconds).
- Click Preview to listen, then Trim and Download WAV.
What is Audio Trim?
The tool decodes audio via the Web Audio API, slices samples between your start and end timestamps, applies linear fades on each side if requested, and encodes a 16-bit PCM WAV. Output is universally compatible — re-encode to MP3 with a dedicated app if needed.
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FAQ
- Why WAV output and not MP3?
- MP3 encoding requires a ~150 KB encoder library. WAV is uncompressed but lossless and ubiquitous. If you need MP3, run the WAV through a dedicated encoder.
- Does it support .opus or .aac?
- Yes — anything your browser's Web Audio API can decode, including most modern codecs.