Compress AAC
Free, fast and secure: shrink your AAC file right in your browser.
AAC
Make your AAC smaller without changing its format
Compressing AAC 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 AAC
- 1 Drop your AAC file into the compressor above.
- 2 Pick a compression level and it is optimised automatically.
- 3 Download your smaller AAC file instantly.
About AAC
AAC
AAC audio
AAC is the successor to MP3, offering better sound at the same bitrate. It is the standard for streaming services, YouTube and Apple devices.
Strengths
- Better quality than MP3 at equal size
- Standard for streaming platforms
- Wide modern-device support
Limitations
- Lossy compression
- Slightly less universal than MP3
- No lossless mode
Best for: Streaming and modern playback where quality-per-byte beats raw compatibility.
Frequently asked questions
Upload your AAC 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.