File Compressor (ZIP)
Pack and compress multiple files of any type into a single ZIP archive. Processing happens entirely in your local RAM.
Click or drag any files here
Max recommended total size: 500MBReality Check: ZIP compression works miracles on text files, CSVs, and raw data. It will do almost nothing to shrink files that are already heavily compressed (like MP4 videos, JPG images, or existing ZIPs).
File Compression Standards
Client-Side Processing
Your files are loaded into your browser's local memory and packed natively. No server uploads mean absolute privacy, zero bandwidth costs, and no waiting in server queues.
DEFLATE Algorithm
This tool uses standard ZIP compression (DEFLATE). It works by finding repeated patterns in your files' raw data and replacing them with shorter references. Higher compression levels search deeper for patterns but require more CPU time.
RAM Constraints
Because the archive is built in-memory before being offered for download, processing multi-gigabyte batches may cause your browser tab to crash. If you need to compress 5GB of data, use native desktop software.