Compress audio online
Reduce audio file size online
Need to make an audio file smaller before you upload, send, or save it? This audio compressor helps you reduce audio file size without making the process complicated. It works well when you need to compress audio quickly and keep the file easier to share.
How it works
Upload the audio
Choose the file that is too large.
Compress the audio
Reduce bitrate or change format to make a smaller file.
Download and listen
Compare size and quality before sharing.
Frequently asked questions
About Compress Audio
Compress Audio reduces file size so recordings are easier to email, upload, store, or send in chat. Large audio files usually come from WAV, AIFF, FLAC, high bitrate MP3, long recordings, or stereo audio where mono would be enough. Voice can usually be compressed more aggressively than music. Podcasts, lectures, interviews, and voice memos often sound fine at lower bitrates. Music needs more bitrate to avoid dullness, warbling, or harsh cymbals. After compression, listen to quiet parts, loud parts, and any important speech before submitting the file.
Updated June 2026: Added guidance for reducing audio size for email, podcasts, voice notes, upload limits, bitrate, mono/stereo, and quality checks.