Practical focus
Use this page for a more comfortable upload target that keeps better quality than very small limits.
Private browser-based audio compression
Compress Audio to 20MB
Compress audio to 20MB for voice, podcast segments, and shorter music files with more bitrate headroom.
Your audio is compressed locally in your browser. Files are not uploaded to a server.
MP3 / WAV / M4A / AAC / OGG / FLAC inputMP3M4A / AACOGG
File-
Size-
Duration-
Your audio is compressed locally in your browser. Files are not uploaded to a server.
Compression mode
Quick targets
Advanced settings
Select an audio file to begin.
Compression result
Original size-
Compressed size-
Saved-
Output-
Bitrate-
Quick tips
- 20MB is friendly for speech and podcasts.
- Music clips can often use 160-192 kbps.
- Very long high-quality audio may still need mono or lower bitrate.
How to use
- Use Target Size mode at 20MB, or 19.5MB if the limit is strict.
- For voice, 96 kbps mono often keeps a natural sound.
- For podcast segments, try 96-128 kbps.
- For music clips, test 160-192 kbps if the duration is not too long.
Recommended settings
| Content | Suggested setting |
|---|---|
| Voice recording | 96 kbps mono |
| Podcast episode segment | 96-128 kbps |
| Music clip | 160-192 kbps |
| Long lecture | 64-96 kbps mono |
Supported formats
MP3 is suitable for most 20MB sharing and upload workflows.
AAC/M4A can be a good mobile output when playback compatibility is known.
Quality vs file size
20MB allows higher bitrates than 10MB or 16MB, so speech and podcast audio can usually sound less constrained.
Long music still consumes space quickly. Duration, bitrate, channels, and format decide whether 20MB is realistic.
Privacy and local processing
Compression runs in your browser, so the original audio is not uploaded to a server.
Large files can still be slow because decoding and encoding use your device memory and CPU.
Things to watch
- 20MB is not a guarantee of high quality for very long music.
- Email systems may count attachments differently after encoding or transfer.
FAQ
Is 20MB enough for high-quality audio?
For short or medium files, often. For long music, it may still require compromise.
What bitrate should I choose for 20MB?
Use 96 kbps mono for voice, 96-128 kbps for podcasts, and 160-192 kbps for short music.
Can I compress a WAV file to 20MB?
Yes, usually by converting it to MP3 or AAC.
Does 20MB work for email?
Often, but leave margin because email providers have different limits.
Should I choose MP3 or AAC for 20MB?
MP3 is safer for compatibility; AAC can be more efficient on modern devices.