FileMagic also excels in handling the complex compression algorithms used in HKI3 files. Unlike more common formats such as ZIP or RAR, the HKI3 format uses advanced techniques to achieve higher compression ratios, which can make extraction slower or more resource-intensive on some systems. https://www.filemagic.com/en/compressed-files/hki3-file-extension/hki3-file-problems-why-your-pc-won-t-open-hki3-files/