Isn't CyberChef[0] also local and without ads, and also open source?
The README isn't clear, what exactly is "data conversion utils" and what is the usage?
Outlining exactly what the tool does in the README would help a lot. I was having trouble finding that info.
love this, i always use sketchy websites for simple utils like counting number of words, validating JSON etc.
though this is nothing that can't be done on the CLI (wc, jq, grep etc) - it's obviously easier through a web interface if it's only used sparingly.
On this note I really recommend cyberchef[1]: a large collection of open-source web based utils and converters that can be chained together. Oh and it's maintained by the GCHQ, the agency that cracked the german enigma codes.
[1] https://gchq.github.io/CyberChef/