1. Upload your audio file
Drag and drop your audio file into the upload area, or click to browse your device. We support MP3, WAV, FLAC, AAC, OGG, M4A, and dozens of other audio formats.
Online Audio Compressor
Compress audio files and reduce audio file size in seconds — right from your browser. Supports MP3, WAV, FLAC, M4A, OGG, and more. 100% free.
Rated 4.5 out of 5 on Trustpilot
Why compress audio with HappyScribe?
Supports All Audio Formats
Compress MP3, WAV, FLAC, AAC, OGG, M4A, AIFF, and more. Our audio file compressor handles every major format — no conversion needed.
No Signup, No Cost
Compress audio files for free, directly in your browser. No account required, no watermarks, no hidden fees.
Quality Preservation
Our smart compression algorithms reduce audio file size while preserving clarity. Choose between maximum compression or balanced quality.
Works on Any Device
No software to install. Compress audio online from Chrome, Safari, or Firefox — on desktop, tablet, or phone.
How to compress an audio file?
2. Choose your compression settings
Select your preferred compression level. Choose maximum compression for the smallest file size, or balanced compression to keep your audio sounding great. Hit the Compress button when ready.
3. Download your compressed audio
Your compressed audio file is ready in seconds. Click the download link to save the smaller file to your device. No software installation needed.
What is audio compression?
Audio compression reduces the file size of audio recordings by removing inaudible data and optimizing how sound is stored. The result is a smaller file that still sounds great for most use cases — from podcasts to music to voice recordings.
Supported audio formats
Our audio compressor supports all major formats: MP3, WAV, FLAC, AAC, OGG, M4A, AIFF, WMA, OPUS, AMR, and more. Upload any audio format and compress it instantly without needing to convert first.
Free Online Audio Compressor
Looking for a fast way to compress audio files? HappyScribe's online audio compressor lets you reduce audio file size in just a few clicks — no software to download, no signups, and completely free. Upload your MP3, WAV, FLAC, or any other audio format, pick your compression level, and download a smaller file in seconds.
Why reduce audio file size?
Large audio files can be difficult to manage. They fill up storage quickly, take too long to upload or send, and often exceed file size limits on email and messaging platforms. Compressing your audio solves all of these problems while keeping the content perfectly listenable.
When to use an audio compressor
Podcasts and voice recordings — Compress audio recordings before uploading to hosting platforms or sharing with editors. Smaller files transfer faster without affecting voice clarity.
Email attachments — Most email providers cap attachments at 25 MB. Compress your audio file to fit within the limit and avoid bounced emails.
Music and sample libraries — Musicians and producers can compress large WAV or FLAC libraries to free up disk space while preserving audio quality for production work.
Cloud storage savings — Running out of space on Google Drive, Dropbox, or iCloud? Batch-compress your audio collection and reclaim gigabytes instantly.
How audio compression works
Audio compression works by analyzing your file and removing data that is either redundant or inaudible to the human ear. Our compressor offers two modes: maximum compression for the smallest possible file (ideal for voice recordings and speech), or balanced compression for the best trade-off between size and fidelity (ideal for music). Either way, the process takes just seconds.
Compress any audio format
Our audio compressor isn't limited to one format. Whether you need to compress MP3 files, reduce WAV file size, shrink M4A or OGG files — it all works the same way. Upload, compress, download. You can also convert your audio to another format or transcribe audio to text — all from the same browser window.
Frequently Asked Questions
How much can I reduce an audio file size?
Depending on the format and settings, you can typically reduce an audio file by 40% to 90% of its original size. WAV and FLAC files see the biggest reductions since they start uncompressed. MP3 files, already compressed, see smaller but still meaningful savings.
Does compressing audio reduce sound quality?
With balanced compression, most people can't hear the difference. For voice recordings and podcasts, even maximum compression sounds perfectly clear. For music production, we recommend using the balanced setting to preserve fidelity.
What audio formats can I compress?
Our audio compressor supports all major formats including MP3, WAV, FLAC, AAC, OGG, M4A, AIFF, WMA, OPUS, AMR, and many more. Upload any audio file and compress it without converting first.
Is there a file size limit?
We support audio files up to 4 GB each in the free version.
How to compress audio for email?
Upload your audio file, select maximum compression to get the smallest file size, and click Compress. Most email providers accept attachments up to 25 MB — our tool can typically get your audio file well under that limit in seconds.
Can I compress multiple audio files at once?
Yes. Upload several audio files and compress them all in one session. No need to repeat the process for each file — batch compress and download them all.
Are my audio files secure?
Absolutely. All transfers are secured with TLS 1.3, and your audio files are automatically deleted from our servers after processing. We never store, share, or access your content.
Can I compress audio on my phone?
Yes — our online audio compressor works in any mobile browser. No app download required. It runs smoothly on iOS Safari and Android Chrome.
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