File Compression Online
Compress your files into ZIP archives with adjustable compression levels. Process everything locally in your browser for maximum privacy.
Features
Adjustable compression levels
Multiple file upload
Instant compression
No server upload
How to Use
- Open the Zip Creator
- Upload files to compress
- Select compression level
- Download the compressed ZIP archive
FAQ
How much can files be compressed?
Compression ratio depends on file type. Text files compress well (50-80% reduction). Images and videos are already compressed, so minimal further reduction is possible.
What compression algorithm is used?
The tool uses the DEFLATE algorithm via the browser's CompressionStream API.
Can I compress a single file?
Yes, you can create a ZIP archive with just one file.
Is this faster than desktop tools?
Performance is comparable for small to medium files. For very large archives, desktop tools may be faster.