About FreeCompressKit
Free online file toolkit that respects your privacy. Every operation runs in your browser — your files never leave your device.
5
File Tools
3
Hash Algorithms
0
Sign-ups Required
0
Data Sent to Server
Our Tools
Zip Creator
Create ZIP archives from multiple files with adjustable compression levels (store, fast, normal, max).
Zip Extractor
Extract ZIP files in your browser. View contents with file sizes and download individual or all files.
Base64 Converter
Convert files to Base64 strings or decode Base64 back to files. Auto-detect MIME types and preview images.
File Hash Checker
Compute SHA-1, SHA-256, and SHA-512 hashes. Compare against expected hashes to verify file integrity.
File Size Analyzer
Analyze file sizes with distribution charts, type breakdown, largest/smallest files, and average size.
Privacy & Security
100% Browser-Based
All processing happens in your browser. Your files are never uploaded to any server.
Instant Processing
No waiting for server responses. Everything is processed instantly using browser APIs.
Works Everywhere
Use on any device with a modern browser — desktop, tablet, or phone. No installation needed.