The only browser-based tool that compresses audio files, video files, and ZIP/7Z archives — all in one place. Nothing ever uploads to a server. No subscription. One-time $9.
💳 Secure checkout · Instant access after payment
Perfect for
Most online compressors do one thing. This does everything — privately.
| Feature | Media Compressor Pro | Other tools |
|---|---|---|
| Compress audio files (MP3, WAV, FLAC) | ✅ | Audio tools only |
| Compress video files (MP4, MOV, AVI) | ✅ | Video tools only |
| Extract & compress ZIP / 7Z archives | ✅ | ❌ Rarely |
| Files never uploaded to any server | ✅ Always | ❌ Most upload |
| Set exact target file size (e.g. 140MB) | ✅ | Quality slider only |
| Batch compress multiple files at once | ✅ | One file at a time |
| One-time payment — no subscription | ✅ $9 forever | ❌ Monthly plans |
Media Compressor Pro is a browser-based tool that compresses audio files (MP3, WAV, FLAC, M4A, OGG, AIFF), video files (MP4, MOV, AVI, MKV, WMV, WebM), and archives (ZIP, 7Z) without uploading them to any server. Everything happens locally on your device — your files never leave your computer.
It was built to solve a common problem: online platforms, learning management systems, and website builders often impose strict file size limits — typically 150MB or less. Media Compressor Pro lets you compress audio and video files to meet those limits directly in your browser, with no software to install, no account to create, and no monthly fee.
Drop your audio file into Media Compressor Pro, choose 192 kbps or higher, and click compress. The tool re-encodes using MP3 — entirely in your browser — producing a smaller file that still sounds full and clear. For most speech and music, 192 kbps is indistinguishable from the original.
Switch to Target Size mode, set your limit to 140MB, and drop in your video. The tool calculates the right bitrate automatically and re-encodes using H.264/MP4 — the most widely compatible video format — right inside your browser.
Yes — completely. Media Compressor Pro runs entirely inside your browser using WebAssembly. Your files are never sent to any server. No one else can see or access them. This is especially important for sensitive recordings, confidential presentations, or private community content.
Audio: MP3, WAV, FLAC, M4A, OGG, AIFF. Video: MP4, MOV, AVI, MKV, WMV, WebM. Archives: ZIP and 7Z (audio/video files inside are automatically extracted and compressed in one step).
Yes. Drag and drop as many files as you like — they'll be processed in a queue. You can even drop an entire ZIP or 7Z archive and the tool will extract all the audio and video inside and compress them automatically.
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Media Compressor Pro · Online audio compressor & video compressor · Compress MP3, WAV, MP4, MOV in browser
All processing happens locally in your browser · No files are ever uploaded · 100% private · Works on Mac, Windows, and mobile
© 2026 Spring Breeze Ventures · compressor.springbreezeventures.com
Compress audio & video · ZIP & 7Z archives supported
Output quality (MP3):
Output quality (lower CRF = better quality, larger file):
💡 CRF 18–22 = near-lossless · CRF 23–28 = excellent quality · CRF 29–35 = smaller files
Bitrate is auto-calculated per file from its duration.
Drop files or archives here
Any mix of audio, video, ZIP or 7Z files
📁 Browse Files100% private — everything runs in your browser. No files leave your computer.