Choose Files:
Compression Settings:
Output Files:
To compress all output files in a ZIP file, click "" icon on the right, then click "Add to ZIP". To download one single file, simply right-click on file link and click "Save link as...".
| File Name | Original Size | Output Size | Size Compressed | Actions |
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How to compress audio files:
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Settings
Set overall audio quality first. Overall audio quality value can be 1 (lowest audio quality and highest compression) to 100 (best quality but least effective compression). You can also select "Change specific audio parameters" option to set audio bitrate and sample rate.
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Add Files
Drag multiple audio files to the "Choose Files" section. Each audio file size can be up to 200 MB. This audio compressor supports many audio formats such as MP3, M4A, AAC, OGG, OPUS, AMR, WAV, WMA, AU, FLAC, MKA, AIFF or RA.
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Compress Files
The batch compression automatically starts when files are uploaded. Please be patient while files are uploading or compressing.
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Output Files
The output files will be listed in the "Output Files" section. To compress all output files in a ZIP file, click "" icon on the right, then click "Add to ZIP". You can right-click on file name and click "Save link as..." to save the file. The output files will be automatically deleted on our server in two hours, so please download them to your computer or save them to online storage services such as Google Drive or Dropbox as soon as possible.
About:
You can use this online audio compressor to compress MP3, compress M4A, compress AAC, compress OGG, compress OPUS, compress WAV, compress WMA, compress MKA or compress AIFF.
The exclusive "Overall Audio Quality" option on our website is inspired by the "JPEG Quality" option in image compression. It's more intuitive than setting audio parameters such as audio bitrate or sample rate. A few formats are lossless audio formats, for example, WAV (Waveform Audio File Format) is typically uncompressed audio used by audio experts for maximum audio quality. We created new calculator to calculate "Overall Audio Quality" value for these uncompressed audio files. Compression algorithm for lossless audio formats is different from compression algorithm for lossy audio formats such as MP3 or OGG.
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Aconvert.com is a sister website of Compresss.com, it focuses on converting files instead of compressing files.