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
4 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.