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Browser extension
Freemium

SoundSift by KitlyAppsMP4 to MP3 Converter

Turn a video into MP3 or WAV on this device, then trim it on a waveform.

Chrome and Microsoft Edge · Free to install

Add to Chrome (opens in a new tab)Add to Edge (opens in a new tab)

Media stays on the device. SoundSift is offline, with no analytics and no remote code. MP3 encoding uses lamejs under LGPL-3.0. Privacy policy

Features

Audio from the video, on this device

Conversion stays offline. MP3 encoding uses lamejs, credited under LGPL-3.0 on the privacy page.

  • MP3 or WAV

    Convert MP4 to MP3 from 64 to 320 kbps, or to WAV. The work runs on this device.

  • Waveform trim

    Trim the clip on a waveform before you save it.

  • Batch

    Convert more than one file in a batch.

  • ID3 tags

    Write ID3 tags on the MP3.

  • Pro · coming soon

    ZIP, fades, and normalise

    Pack a batch as a ZIP, add fades, and normalise loudness. Those are part of Pro and are coming soon.

Pricing

Free vs Pro

Pro is coming soon. The Pro price is a placeholder.

Pro

Coming soon

TODO

Coming soon. Placeholder price: TODO.

  • ZIP
  • Fades
  • Normalise

Not on sale yet.

FAQ

Questions

Does SoundSift upload the video?+
No. Conversion is offline. The file stays on this device, and there is no analytics and no remote code.
Which formats can I save?+
MP3 from 64 to 320 kbps, or WAV. You can trim on a waveform, convert a batch, and write ID3 tags.
What is lamejs?+
MP3 encoding uses lamejs, included in the extension. lamejs is licensed under LGPL-3.0 and credited on the privacy page.
What does Pro include?+
Pro is coming soon. It adds ZIP, fades, and normalise. The Pro price on this page is a placeholder.
Privacy

Stays on your device

Media stays on the device. SoundSift is offline, with no analytics and no remote code. MP3 encoding uses lamejs under LGPL-3.0.

Read the SoundSift privacy policy