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For companies

Fade in/out

Fade in and fade out audio: the sound rises from silence at the start and falls back to silence at the end, each over the number of seconds you set. Handy for a song cut out of a longer recording, an intro or a ringtone. Nothing is uploaded: your browser does the work.

How to add a fade in and fade out to audio

  1. 1Drop an audio file in, or click to choose one
  2. 2Set "Fade in (seconds)" and "Fade out (seconds)"
  3. 3Type 0 for an end you want to leave as it is
  4. 4Click "Add fades" and save the result
  5. The same audio with a soft start and a soft end

What happens to your files

  • Nothing is uploaded.Your file is read and processed by your browser, on your own device
  • Each end has its own length.Fade in and fade out are set apart, from 0 to 60 seconds each
  • A straight, even fade.The volume rises in a straight line from silence and falls the same way back to silence

What you can do

  • Set the fade in and the fade out in seconds, each from 0 to 60. The tool opens with 2 seconds for both
  • Fade only one end: type 0 for the other one and it stays as it is
  • Read before you start how long the rise and the fall will be and in which format the file is saved
  • Save in the format the file already has, or as MP3, M4A (AAC), WAV or OGG (Opus)
  • Open MP3, WAV, M4A, AAC, OGG, OPUS, FLAC and WebM files, and the sound of MP4, MOV and MKV videos
  • Listen to the result in the player. It is also kept in "Results", from where it can go into another tool

Good to know

  • The two fades together can't be longer than the file. If they are, the tool says so and shows the file's length
  • The fades sit at the very start and the very end of the file. To fade at another point, cut the file there first with the Audio cutter
  • The fade is a straight line. Other shapes can't be chosen
  • The sound is decoded and encoded again. "Same as the original" keeps the format at a bitrate not below the original's. A FLAC is saved as WAV, which is lossless too
  • It works best in desktop Chrome or Edge

Questions

How do I fade out an MP3 at the end?

Drop the MP3 in, type the length under "Fade out (seconds)", set "Fade in (seconds)" to 0 if the start should stay as it is, and click "Add fades".

Can I add only a fade in, or only a fade out?

Yes. A fade of 0 seconds leaves that end untouched. Only when both are 0 does the tool refuse, because nothing would change.

How long should a fade be?

The tool starts at 2 seconds for each end. A short fade takes the hard edge off a cut, a long one lets a song die away slowly. Listen to the result in the player and try another number if it doesn't sound right.

Can I fade in the middle of a recording?

Not directly. The fades always sit at the start and the end of the file. Cut the part you need first with the Audio cutter, then add the fades to that part.

Is my audio file uploaded?

No. Nothing is uploaded. The file is read and processed by your browser, on your own device.

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