Audio Compressor

Compress Audio Files Online in Just a Few Clicks

1. Upload Your Audio Files: Click "+ Add Files" to select audio files from your computer, Google Drive, or Dropbox. Supports MP3, WAV, FLAC, AAC, OGG, M4A, WMA, AIFF, OPUS, AC3, AMR, AU, DSS, M4B, OGA, VOC, WEBA, and more.
2. Choose Compression Settings: Set a target file size percentage, specific size, or custom bitrate. Optionally adjust sample rate, channels, and trim audio.
3. Download Compressed Files: Click "Compress" and download your smaller audio files.

Why Compress Audio Files?

Large audio files are difficult to share, slow to upload, and consume storage space. Compressing audio helps with:

• Smaller File Sizes: Easier to share via email, messaging apps, and file sharing services.
• Faster Uploads: Reduced upload and download times for sharing and streaming.
• Storage Savings: Free up space on devices, cloud storage, and servers.
• Bandwidth Efficiency: Lower data usage when streaming or downloading audio.

Supported Audio Formats

XConvert Audio Compressor works with all major audio formats:

• MP3 — Most widely supported lossy format. Ideal for music and podcasts.
• WAV — Uncompressed, lossless audio. Large files, perfect quality.
• FLAC — Lossless compression. Smaller than WAV with identical quality.
• AAC — Better quality than MP3 at the same bitrate. Used by Apple devices.
• OGG — Open-source lossy format. Good quality at low bitrates.
• M4A, WMA, AIFF, OPUS, M4R, MMF, AU — Full support for compression and conversion.

About XConvert Audio Compressor

XConvert Audio Compressor is a free online tool with flexible compression options:

• File Size Percentage: Reduce to a percentage of the original size.
• Specific File Size: Target an exact size in KB or MB.
• Custom Bitrate: Set constant (CBR) or variable (VBR) bitrate.
• Sample Rate Control: Adjust from 8kHz to 48kHz.
• Channel Options: Convert stereo to mono for additional size reduction.
• Audio Trimming: Cut specific portions before compressing.
• Output Format: Keep the original format or convert to MP3, AAC, OGG, and more.
• Batch Processing: Compress multiple audio files at once.

Frequently Asked Questions

How does audio compression work?

Audio compression reduces file size by removing audio data that's less perceptible to human hearing. Lossy formats (MP3, AAC, OGG) discard some data permanently. Lossless formats (FLAC) compress without any data loss but achieve smaller reductions.

Will compressing audio reduce quality?

It depends on the format and settings. At 192kbps MP3, most listeners can't tell the difference from the original. For speech and podcasts, 64-96kbps is often sufficient. Lossless compression (FLAC) preserves perfect quality.

What's the best format for compressed audio?

• MP3 at 128-192kbps for general use — universal compatibility.
• AAC at 128kbps for Apple devices — better quality than MP3 at the same bitrate.
• OGG at 128kbps for web use — open-source, good quality.
• FLAC for lossless — no quality loss, ~50% smaller than WAV.

Can I compress audio to a specific file size?

Yes. Use the "Specific file size" option to set a target in KB or MB. XConvert adjusts the bitrate automatically to meet your target.

Can I compress multiple audio files at once?

Yes. Upload multiple files and compress them all with the same settings. Download individually or as a ZIP archive.

Is my data secure?

Yes. All uploads use TLS encryption. Files are automatically deleted after processing. We never store, share, or access your audio files.

Does it work on mobile?

Yes. XConvert works in any modern browser on Windows, macOS, Linux, Android, and iOS — no app installation required.