Audio File Compressor

Dramatically reduce MP3 and WAV file sizes for Email attachments or server uploads using client-side downsampling.

Upload Audio for Compression

Shrink massive 100MB uncompressed WAV files down to 2MB MP3s effortlessly inside your browser to bypass email size limitations.

Reduction Matrix

Lowering the bitrate drastically removes frequency fidelity to shrink physical bytes written.

Merging a Stereo track into Mono mathematically drops the file size roughly by half instantly. Highly recommended for Voice Memos.

Client-Side Audio File Crusher

When attempting to share interview logs, uncompressed music tracks, or massive voice memos over the internet, you will frequently be hit with harsh 25MB attachment limitations. Rather than uploading your private personal conversations into third-party cloud architectures, our application shrinks everything natively within your web browser string buffer.

How does algorithmic downsampling work?

Underneath the hood, our application leverages the industry-standard LAME MP3 encoder bundled within the FFmpeg WebAssembly build. The reduction involves three massive vectors: The Bitrate (determining audio resolution detail), The Channel count (Stereo panning data versus simple Mono tracking), and The Sample Density. Lowering all three parameters results in file sizes that are less than 90% of their original storage footprint while protecting vocal comprehension fidelity.

About Audio File Compressor

This is a free, fast, and fully client-side audio file compressor tool. All processing is done locally within your browser to ensure maximum privacy and security. No data is sent to our servers. Bookmark this page for quick access to ad-free, high-performance SEO and developer utilities.