How to use this audio tool
Compress supported audio files by exporting a lower-bitrate MP3 in the browser.
How the audio logic works
- Choose an audio file.
- Pick a target bitrate.
- Compare the output size after FFmpeg finishes.
Formula
Lower bitrate generally means smaller output and lower audio quality.
Example
Re-encode a large WAV file as a 128 kbps MP3.
Using the audio result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- This is lossy compression.
- Do not use it when you need a lossless archive.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.