WAV Compressor
Choose your channel mix and sample rate, then compress your WAV file and preview the result before downloading — free, private, and processed entirely in your browser.
About the WAV Compressor
Our free online WAV compressor shrinks uncompressed WAV audio files for easier sharing, faster uploads, and less storage use — without converting to a lossy format like MP3. Downmix stereo to mono, reduce the sample rate, or both, then preview the result before you commit to a download.
Unlike most online tools, decoding, resampling, and re-encoding happen entirely inside your browser using the Web Audio API — your recording is never uploaded to a server. That means it's fast, works without an internet round-trip, and keeps your audio completely private and secure.
How to Compress a WAV
Step 1
Upload your WAV file
Drag and drop a .wav audio file, or choose one from your device.
Step 2
Choose channel mix and sample rate
Pick Stereo or Mono, then select a target sample rate — Keep Original, 22,050 Hz, or 11,025 Hz.
Step 3
Compress, preview, and download
Click "Compress WAV", preview the result in the built-in player, then download your compressed file.
Frequently Asked Questions
Will downmixing to mono affect audio quality?
Downmixing combines the left and right channels into one. For music, it might slightly affect the stereo spatial width, but for voices, podcasts, and sound effects, it preserves quality while cutting the file size exactly in half.
Are my audio recordings secure?
Yes. All audio decoding, resampling, and WAV container wrapping happen 100% locally in your browser — your file is never uploaded to a server.
Why compress a WAV instead of converting it to MP3?
WAV compression here reduces file size while keeping the uncompressed PCM format — no lossy encoding artifacts, and the file stays compatible with every tool that expects a WAV. It's ideal when you need a smaller file but still want to avoid lossy formats.
What sample rate should I choose?
22,050 Hz is a good general-purpose choice that keeps most music and voice sounding clear at roughly half the data rate of a typical 44.1kHz file. 11,025 Hz saves the most space and works well for speech-only recordings like voice memos or podcasts.
Does it cost money?
No. The WAV compressor is 100% free to use, with no registration or account required.