EasyFilesConverter

Reduce MP3 size

Reduce MP3 file size for email, WhatsApp or storage. Choose a target MB or quality and download a smaller MP3 - free and private.

Uses the open-source FFmpeg engine (ffmpeg.wasm, LGPL/GPL) running in your browser.

Free · No sign-up · Your files are processed on your device and never uploaded

How to use Reduce MP3 size

  1. MP3song.mp3
    1

    Choose your file

    Drop it on the page or pick it from your phone or computer.

  2. Compress audio
    2

    Press "Compress audio"

    Pick the options you want - the defaults suit most files.

  3. MP3song-compressed.mp3
    3

    Download the result

    Ready in seconds. Your file never left your device.

How to compress an MP3

Example: a 50 MB WAV recording becomes about 5 MB as a 128 kbps MP3; a 10 MB song at 320 kbps becomes about 4 MB at 128 kbps.

  • Choose your audio file (MP3, WAV, M4A, AAC, OGG, FLAC).
  • Pick Auto, Target size (MB) or Quality: High 192 kbps, Medium 128, Low 96, Smallest 64.
  • Press Compress audio, listen to the result and download the MP3.

Private and free

Compression runs in your browser with the open-source FFmpeg engine - your audio is never uploaded. No sign-up, no watermark, no limits.

Questions

Is my audio uploaded?

No. Everything happens on your device.

Which quality should I choose?

128 kbps (Medium) sounds clear for music and is the usual choice. 64 kbps is fine for voice notes and podcasts.

Can I compress WAV to MP3?

Yes - any supported audio file comes out as a smaller MP3.

How do I make an MP3 under a certain size?

Choose Target size, set the MB and press Compress audio; the bitrate is set to fit.

More ways to use Compress MP3 / audio

Compress MP3 / audioMP3 compressorAudio compressor

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