Compress WMA
Free, fast and secure: shrink your WMA file right in your browser.
WMA
Make your WMA smaller without changing its format
Compressing WMA re-encodes the audio at a lower bitrate in the same format, so songs, podcasts and voice notes take up less space, upload faster and fit attachment limits, while still sounding clear.
How to compress WMA
- 1 Drop your WMA file into the compressor above.
- 2 Pick a compression level and it is optimised automatically.
- 3 Download your smaller WMA file instantly.
About WMA
WMA
Windows Media Audio
WMA is Microsoft’s audio format, once common on Windows for music and playback. It compresses well but has limited support outside the Windows ecosystem.
Strengths
- Plays natively on Windows
- Decent compression
- Small files
Limitations
- Weak support on Mac, mobile and web
- Lossy compression
- Often needs converting
Best for: Legacy Windows audio: converted to MP3 for universal playback.
Frequently asked questions
Upload your WMA file above, pick a compression level and it is optimised automatically. When it is ready, download your smaller file: the whole thing takes just a few seconds in your browser.
You choose the balance between size and sound. “Light” stays close to the original, while “Strong” maximises the saving. If your file already uses a low bitrate, we keep your original instead of making it larger.
It depends on the file and the level you pick, but savings of 40–80% are common: larger, less-optimised files shrink the most.
Yes. The compressor is free to use, with no watermark and no sign-up required.
Your files are processed securely and are never shared with anyone.