Archive Tools
Create and compress ZIP archives entirely in your browser. Compare fast, normal, and maximum compression levels side-by-side - see exact KB saved at each level. Free, private, and no signup required.
Archive
5 tools
ZIP Compressor (Max Compression)
Create ZIP archives with maximum deflate compression - compare fast, normal, and maximum compression modes side-by-side and see exact size savings. Free online ZIP compressor.
ZIP File Optimizer
Re-compress an existing ZIP archive at maximum deflate compression (level 9) - ideal for ZIPs created with no compression. See before/after size comparison. Free online ZIP optimizer.
ZIP Password Protector
Add AES-256-GCM password protection to files and download as a ZIP - PBKDF2 key derivation, unique per-file salt and IV, entirely browser-based. Free online ZIP encryption tool.
Archive Format Comparison Tool
Compare ZIP, TAR.GZ, and ZLIB compression for the same files side-by-side - shows which format achieves the smallest size with visual bars and exact byte savings. Free online archive comparison tool.
Archive Content Lister
Upload any archive (ZIP, TAR, TAR.GZ, GZip) and list its contents without extracting - shows file names, sizes, compression ratios, and modification dates. Free online archive content lister.