Compress Audio
âšī¸ How it works:
- Upload your audio file
- Choose compression level and process
- Download compressed file instantly
Compress Audio Files Online for Free
Shrink the size of your audio by lowering its bitrate. Upload an MP3, WAV, FLAC, M4A, AAC, OGG or WMA file, pick a compression level, and download a smaller MP3 — ideal for email, messaging, web pages, and saving storage. No sign-up and no watermarks.
How to Compress an Audio File
- Click the upload area above or drag and drop your audio file (up to 10 MB).
- Choose a compression level — higher means a smaller file at a lower bitrate.
- Process and download your compressed MP3.
Features
- Adjustable Compression – A simple level sets the output bitrate (roughly 128 kbps down to 32 kbps)
- Wide Input Support – Accepts MP3, WAV, OGG, FLAC, AAC, M4A and WMA
- MP3 Output – Your file is re-encoded to a compact, universally compatible MP3
- Fast & Browser-Based – No software to install
- Private – Files are processed securely and not shared
When to Compress Audio
- Email attachments – fit under size limits
- Website audio – faster page loading
- Storage savings – free up space on your devices
- Messaging & social – meet upload size limits
Frequently Asked Questions
Compression lowers the bitrate, so it is lossy — but at moderate levels the difference is hard to notice for most listeners. Pick a lower compression level if you want to keep more quality, or a higher one for the smallest file.
The result is an MP3, regardless of the format you upload. MP3 is compact and plays on virtually every device. If you only need to change the format, use our Convert Audio tool.
It depends on the original format and the level you choose — typically 30–80%. WAV and other uncompressed files shrink the most when converted to MP3.
You can upload one audio file up to 10 MB.
Related Audio Tools
- Change Audio Bitrate – set an exact bitrate
- Convert Audio – change the audio format
- Trim Audio – cut a clip from your audio
- Join Audio – combine multiple audio files
- Adjust Volume – make audio louder or quieter