I got tired of having to download loads of different apps to convert data formats, so I built an all in one[0]. The plan is to add more formats, I just haven't had time yet. I've also had a thought of making it a bit more Swiss army knife like, in that it includes things like encoding/decode, encrypt/decrypt and others similar to cyberchef[1] but on the command line.
[0] https://github.com/hoshsadiq/big-fat-converter/
[1] https://gchq.github.io/CyberChef/