Flexible quality
Use a lower bitrate for speech or a higher one for music.
VoysumPrivate browser tool
Change Audio Bitrate
Choose an MP3 bitrate to balance audio quality and file size without uploading the file.
No uploadNo accountFree to use
✓ Runs locally in your browser
↥Choose or drop a fileaudio/*, .mp3, .wav, .m4a, .webm · up to 500 MB
🔒 Your media file is never uploaded to Voysum.
Private by default
Useful conversion without giving up your file.
Predictable output
Encode with a selected constant MP3 bitrate.
Local and free
No account, API, or server upload is needed.
Common questions
Change Audio Bitrate FAQ
How local browser processing works and what to expect.
Which bitrate should I use?
128 kbps is a practical general choice; 64–96 kbps often works for voice.
Can a higher bitrate restore quality?
No. It cannot restore information already lost in a low-quality source.
Keep working
Related free tools
Free browser tool
Audio Compressor
Compress audio to a smaller MP3 locally in your browser.
Open tool →Free browser toolChange Audio Sample Rate
Resample audio to 16, 22.05, 44.1, or 48 kHz locally.
Open tool →Free browser toolAudio Volume Normalizer
Normalize perceived audio loudness locally in your browser.
Open tool →Turn this recording into searchable text.
Download the result, then upload it to Voysum for an editable transcript plus TXT, SRT, VTT, and CSV exports.
Continue to audio transcription