Free Online File Compressor —
Compress Images, Videos & More
Reduce video size, shrink PDFs, and condense audio files with privacy-safe browser compression. No signup. Fast downloads.
All Compression Tools
Compress Image Online Free
Optimize JPG, PNG, and WebP without losing visible quality.
Reduce Video File Size
Shrink MP4 and MOV files for easier sharing and faster uploads.
Shrink PDF Files
Compress large PDF documents for email while keeping text crisp.
Compress Audio Files
Reduce bitrate of MP3 and WAV files with professional-grade encoders.
Create ZIP Archive
Bundle and compress any files into a single ZIP archive.
Convert Image Format
Convert between JPG, PNG, WebP and resize in batch.
Effortless Compression in 3 Steps
Upload
Drag and drop your files into the secure browser window.
Auto-Process
Our local algorithms shrink file size while maintaining high fidelity.
Download
Save your optimized files instantly to your local drive.
Your Files Never Leave Your Browser
Unlike traditional online tools that upload your private data to remote servers, SimpleCompressor uses WebAssembly technology to process everything locally. Your sensitive documents, family photos, and internal videos stay 100% private.
SimpleCompressor vs Others
| Feature | SimpleCompressor | Cloud Compressors |
|---|---|---|
| Privacy | 100% Local (Private) | Server-side (Exposed) |
| Processing Speed | Instant (No upload) | Slow (Upload/Download) |
| File Size Limit | Up to 2 GB | Usually <100 MB free |
| Account Required | No | Often Yes |
| Watermarks | Never | Frequently for Free Users |
Frequently Asked Questions
How do you compress files without uploading them?
We use WebAssembly to run professional compression libraries (FFmpeg, Canvas API) directly inside your browser. Your data never touches our servers.
Is there a limit on files I can compress?
No. Since we don't use server processing, we don't need to limit you. Compress as many files as your hardware can handle.
Which video formats are supported?
MP4, MOV, WebM, and AVI. Our engine uses H.264 and H.265 encoding for the best balance of size and quality.