This is a file compression program I wrote in JavaScript when I was 17 after 4 years of effort (I’m 21), and I improved it for 4 more years, which outputs to Base32768, rather than the Base2 of binary, and features AES256-CTR encryption too. Files don’t have to be binary. This program’s files have the .B3K extension. This program makes no external requests and can be ran offline.