Audio Compressor
Compress audio files by reducing bitrate and file size
Upload Audio File
Drag & drop your audio file here, or click to select
About the Audio Compressor
The Audio Compressor reduces the file size of an audio recording by lowering its bitrate, so large files become small enough to email, upload, or store without using as much space. It trades a controllable amount of audio detail for a much smaller file — ideal when convenience matters more than studio fidelity.
Big WAV files and high-bitrate recordings can be awkward to share: email limits, slow uploads, and full storage all get in the way. Compressing brings the size down dramatically while keeping the audio perfectly listenable for speech, demos, and casual music, so you can move files around easily.
Everything is processed in your browser, so your audio stays on your device with no upload. That keeps interviews, voice notes, and unreleased tracks private, and there is no account or queue — just choose your settings and download the smaller file.
How to use the Audio Compressor
- Upload your audio file by dragging it onto the tool or browsing for it.
- Choose your target quality or bitrate — lower bitrate means a smaller file.
- Review the estimated output so you know roughly how small the result will be.
- Start compression and let the tool re-encode the audio locally.
- Compare the result if needed, then download the compressed file.
Common use cases
- Shrinking a large recording so it fits within an email attachment limit.
- Reducing the size of voice memos and interviews before archiving them.
- Preparing audio for faster upload to a website or messaging app.
- Saving storage space across a library of recordings.
Frequently asked questions
Does compressing reduce audio quality?
Lowering the bitrate removes some fine detail, which is the trade-off for a smaller file. For speech and casual listening the difference is usually hard to notice; choose a higher bitrate if you need to preserve more fidelity.
What bitrate should I choose?
For spoken word, a lower bitrate (such as 96 kbps) is usually fine. For music, a higher bitrate (such as 192 kbps or more) preserves more detail. Pick based on how the audio will be used.
Is this the same as normalizing volume?
No. This reduces file size by changing the bitrate. To even out loudness instead, use the Volume Normalizer; the two tools solve different problems and can be used together.
Is my audio uploaded anywhere?
No. Compression happens entirely in your browser, so your file never leaves your device.
Can I compress an already-compressed file further?
You can, but re-compressing a low-bitrate file again will degrade quality more noticeably. For best results, compress from the highest-quality source you have.