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Audio Editor
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Trim, join, and adjust audio right in your browser—no software installation required. Import and export popular audio formats with ease.
Choose filesUpload local audio
Support for common audio files, processing is done in the browser and will not be uploaded to the server.
Once the audio has been uploaded and the results generated, you can audition and export it here.
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
Use this page to open one audio file, keep a continuous section between a start and end time, optionally adjust gain and add fades, preview the source and edited result, then download a WAV file. It is suited to a quick single-clip trim such as shortening a voice memo or selecting a passage from a recording. It is not a multitrack timeline and does not export MP3 or another compressed format.
Gain is entered in decibels (dB), a logarithmic measure of level change. Positive gain raises the sample values and negative gain lowers them. Fade-in and fade-out are durations in milliseconds. The output is encoded as 16-bit PCM WAV at the decoded audio’s sample rate and channel count; this means an MP3 or AAC input is decoded and then written to a different format, not preserved as the original compressed stream.
After processing, the page reports the source file, selected start and end, resulting duration, gain, fade durations, WAV format details, and output file size. Preview the processed clip before downloading so you can catch a misplaced boundary or an unwanted level change.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Select a single supported file, such as MP3, WAV, M4A, AAC, OGG, FLAC, OGA, or WebM audio. The browser must be able to decode the file; a recognized extension does not guarantee that every codec is supported.
Enter the start and end in seconds within the file duration. The selected range must have positive length; the editor keeps at least a short interval between the two boundaries.
Leave gain at 0 dB and fades at 0 ms for a plain trim. Raise or lower gain in dB as needed, and set fade durations in milliseconds to soften the clip’s beginning or ending.
Generate the edited result, preview it, check the summary, then download the WAV. If the cut or sound level is wrong, change the controls and process again.
For a 45-second recording, setting the start to 12 seconds and the end to 20 seconds produces an 8-second selected passage before fades. A 250 ms fade-in lasts one quarter of a second. The export remains PCM WAV even if the source file was compressed.
Use cases
See how the tool fits into real work and everyday tasks.
Keep the useful beginning or ending from a spoken note, preview the trim, and save a WAV copy for attaching to a project.
Select one continuous answer from a longer recording and add brief fades to avoid an abrupt start or stop before handing it to an editor.
Lower gain or shorten a reference clip when sharing it with collaborators, while keeping the original file as a separate source.
Q&A
Find concise answers to common questions and confusing cases.
No. The download is a WAV containing 16-bit PCM samples. If you need MP3, convert the WAV with a suitable encoder after export.
The browser must support decoding the file’s actual audio codec. Try a browser-supported export of the source if decoding fails.
No. The source is decoded and the selected samples are written as PCM WAV. WAV avoids another compressed MP3 export, but it cannot restore information already lost in a compressed source.
The interval is constrained to a valid range within the decoded duration. Set the start and end again, then process the result and preview it.
Notes
Review scope, result limitations, and important precautions before use.
Processing depends on browser decoding support and available device memory, especially for long or large recordings. Applying positive gain can push samples beyond the representable range; the export clamps samples, which can cause audible clipping. Fades and trimming alter the audio, so keep the original if you need an unchanged source. The page’s processing description says audio is handled in the browser; still avoid treating an online editing page as a substitute for your organization’s approved workflow for sensitive recordings.
Related
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