ZIP Format
The most universal compression standard, in use for over 30 years
History
ZIP was first released in 1989 by Phil Katz of the United States, alongside PKZIP. It became the de-facto compression standard once Windows, macOS, and Linux all added native support. The Info-ZIP project released open-source implementations in 1996, accelerating adoption further.
Key Features
- DEFLATE algorithm — A classic, fast scheme based on LZ77 + Huffman coding
- Multiple algorithms — Beyond DEFLATE, ZIP also supports LZMA, BZip2, PPMd, and Zstandard
- ZIP64 extension — Supports files over 4GB and archives with more than 65,536 entries
- AES-256 encryption — Standardized by WinZip; the older ZipCrypto is weak
- Independent compression — Each file is compressed separately, enabling fast partial extraction and random access
- Unicode filenames — UTF-8 flag allows multilingual filenames
Strengths
ZIP opens everywhere — built into Windows so no tool is required. Compatibility, stability, and tooling are all best-in-class. Partial extraction is fast, making previews and single-file extraction very efficient.
KingZip Support
KingZip handles ZIP compression/extraction, ZIP64, AES-256 / ZipCrypto encryption, and UTF-8 filenames. When creating archives, you can freely choose between DEFLATE / LZMA / BZip2 / PPMd algorithms and compression levels.