Compress audio by quality, percentage, or target size, process up to 10 files, and export MP3, M4A, OGG, or WAV.
Drop audio here to reduce its file size, or import from:
Choose quality, a reduction percentage, or a target size.
An audio file compressor reduces an audio file's size in megabytes (MB), making it faster to upload, easier to share, and less demanding on device or cloud storage.
This tool creates a smaller copy by lowering compressed-audio bitrate or reducing the amount of PCM data stored in a WAV file. You can control quality, reduction percentage, or a target output size while leaving the original file unchanged.
Choose a quality and bitrate, reduce each original by a percentage, or compress audio toward a specific target size.
Apply the same output settings to a group of files, process them sequentially, and download the results together as a ZIP.
See the approximate output size for a single file or the entire batch before starting compression.
Use compressed formats for everyday delivery or control WAV sample rate, bit depth, and channels for PCM workflows.
The Balanced preset is selected by default and works well for most music and general audio.
Choose one file or switch to Batch Compress to add up to 10 MP3, WAV, FLAC, M4A, OGG, AAC, AIFF, WMA, Opus, AMR, or MP4 files.
Use MP3, M4A, or OGG for smaller delivery files, or choose WAV and set its sample rate, bit depth, and channels.
Set a quality and bitrate, enter a reduction percentage, or specify the maximum target size for each output file.
Review the estimate, process the files locally, compare the actual size change, then download one result or the complete batch.
Choose a method based on whether you care most about listening quality, a predictable percentage reduction, a strict MB limit, or keeping WAV output.
Choose a preset or exact bitrate for MP3, M4A, and OGG. Lower bitrate creates a smaller file, while higher bitrate retains more encoded audio detail.
Reduce each source by a selected percentage when you want a smaller copy without calculating a specific bitrate or size.
Enter a maximum size in MB and let the compressor calculate an appropriate bitrate from the audio duration. Leave a small margin for strict upload limits.
Keep WAV output while lowering sample rate, bit depth, or channel count. The size estimate updates directly from the selected PCM settings.
Pick the preset that matches where the finished file will be used.
Use Small File to reduce recordings, demos, and voice notes before sending them through chat or email.
Use Balanced for general podcast delivery or Voice for speech-focused recordings where file size matters most.
Create MP3, M4A, or OGG files that load faster than large WAV, AIFF, or FLAC originals, or work toward a specific upload limit.
Compress large music and recording files into smaller listening copies while keeping the original archive elsewhere.
Import an MP4 video and create a compact audio-only file without keeping the video track.
Use the 64 kbps Voice preset for lectures, meetings, notes, and spoken-word material.
Lower the sample rate, bit depth, or channel count when a workflow requires WAV but the original PCM file is unnecessarily large.
MP3 and WAV reduce file size in different ways. Choose the output according to compatibility, storage limits, and whether the next workflow requires PCM audio.
| Output | How file size is reduced | Best for | Main trade-off |
|---|---|---|---|
| MP3 | Uses lossy bitrate compression | Sharing, web delivery, podcasts, email, mobile storage, and broad playback | Much smaller files, but lower bitrates remove more audio detail |
| WAV | Lowers sample rate, bit depth, channels, or a combination of PCM settings | Editing, transcription, datasets, production handoff, and systems that require WAV | Larger than MP3 and smaller reductions can still change the stored PCM data |
Use MP3 when minimum size and playback compatibility are the priority. Use WAV when the destination requires PCM, and keep the full-resolution source as the master copy.
You can import MP3, WAV, FLAC, M4A, OGG, AAC, AIFF, WMA, Opus, AMR, and MP4 files.
Compressed files can be created as MP3, M4A, OGG, or PCM WAV. WAV output includes controls for sample rate, 16-bit, 24-bit, or 32-bit depth, and mono or stereo channels.
Yes. Batch Compress accepts up to 10 files. The browser processes them one at a time to reduce memory pressure, and completed files can be downloaded individually or together as a ZIP.
Yes. Target Size calculates a bitrate from the track duration and desired size, then tightens the bitrate once more if the first result exceeds the target. Container overhead means the result may not match the requested size byte for byte.
Choose High Quality for detailed music, Balanced for everyday use, Small File for sharing and web delivery, or Voice for speech recordings.
The source may already use a lower bitrate than the selected preset. Choose Small File or Voice, or keep the original when it is already efficiently compressed.
Yes. MP3, M4A, and OGG reduce size by removing some audio information. Higher bitrate presets retain more detail but create larger files.
Yes. FLAC, WAV, and AIFF can be used as sources for MP3, M4A, OGG, or WAV output. WAV size can be changed through sample rate, bit depth, and channel settings.
Yes. Upload the MP4 and the tool will create a compressed audio-only file without the video stream.
It selects a 64 kbps bitrate suited to meetings, lectures, interviews, and voice notes. Choose WAV Mono separately when a one-channel PCM output is required.
It is an approximation based on duration and bitrate. The actual result can vary slightly by format and source content.
Yes. The completed result includes an audio player so you can confirm the quality before downloading.
Edit one or more audio files with a browser-based timeline and export in popular formats.
Batch compress up to 10 files and export MP3, M4A, OGG, or configurable PCM WAV.
Match a sample-peak or LUFS target, compare the original and normalized audio, then export WAV, MP3, M4A, FLAC, or OGG.
Set the peak, shape lows, mids, and highs, control the final ceiling, compare, and export a mastered WAV.
Boost audio up to 300% or normalize it to a consistent -16 LUFS level.
Select a waveform section, add fades, loop-preview it, and export for iPhone or Android.
Select a waveform section, repeat it, smooth every join, then slow down, speed up, transpose, and export.
Update embedded title, artist, album, date, genre, track, comments, and supported cover art.
