Zip File Creator

This tool addresses the critical need for secure, local file archiving without exposing sensitive data to third-party servers. By leveraging the client-side CPU and browser memory, it constructs industry-standard ZIP archives entirely within your device's sandbox. This approach eliminates network latency and ensures that confidential documents - such as financial records or legal contracts - never leave your local environment.

Unlike basic archiving tools, this engine preserves complex directory hierarchies (nested folders) and offers granular control over compression algorithms. It supports Deflate for maximum size reduction and Store for zero-latency packaging. Critical for developers and privacy-conscious users, the tool also implements standard ZipCrypto encryption, adding a layer of security to your bundled assets.

The efficiency of the archiving process is measured by the Compression Ratio (CR), which represents the reduction in data size relative to the original payload.

When using the Deflate algorithm, the sliding window size (w) and compression level (L) determine the balance between CPU cycles and output density. Higher levels (L → 9) perform exhaustive string matching, maximizing CR.