Free online audio tool
Reduce audio file size for sharing, email, messaging, storage, voice notes, and podcast previews.
Choose an audio file from your device. Processing happens locally in your browser when the format is supported.
What is
Audio compression is useful when a recording is too large to upload, email, or send by chat. Lower bitrate and mono output can make speech files smaller.
The compressor creates a new MP3 at the selected bitrate. For speech, 64–128 kbps is often enough. For music, use a higher bitrate.
Use the available controls to adjust the result, listen before saving, and download a new file when you are satisfied.
How to
Formats
The upload field accepts common audio extensions, but the device must be able to decode the actual file. MP3 and WAV are the safest choices. OGG, OPUS, M4A, AAC, M4R, FLAC, and AIFF support can vary.
Common uses
Audio compression is useful when a recording is too large to upload, email, or send by chat. Lower bitrate and mono output can make speech files smaller.
This tool is suitable for quick adjustments to voice notes, recordings, lessons, interviews, podcasts, music clips, and other personal audio files.
Before editing
The compressor creates a new MP3 at the selected bitrate. For speech, 64–128 kbps is often enough. For music, use a higher bitrate.
Your selected audio is processed on your device. For long or large files, keep the page open and avoid running too many other applications until processing finishes.
Preview the result before downloading. Damaged, protected, silent, or unusually created files may not open successfully, and strong adjustments can sometimes produce unwanted changes.
FAQs
Audio compression is useful when a recording is too large to upload, email, or send by chat. Lower bitrate and mono output can make speech files smaller.
The upload accepts common audio formats such as MP3, WAV, OGG, OPUS, M4A, AAC, M4R, FLAC, AIFF. Support can vary depending on how the original file was created.
Yes. Preview the processed result before creating the final MP3 or WAV output whenever the tool provides a preview control.
Most editing tools export MP3 for smaller files and WAV for an uncompressed copy.
Large files and long recordings require more time to prepare. Device speed and available memory can also affect processing time.
Free MP3 Cutter & Converter