The idea came to me when we were trying to find ways to manage Terraform secrets , CI vars were a no-go because people sometimes wish to deploy locally for testing stuff, and tools like Vault have honestly been a pain to manage, well, for us at least. So I have been building this tool where the variables are encrypted with `age`, have RBACs around it, and an entire development workflow (run ad-hoc commands, export, templating, etc) that can easily be integrated into any CI/CD alongside local development. We're using this and storing the encrypted secrets in Git now, so everything is version-controlled and can be found in a single place.
Do give it a try. I am open to any questions or suggestions! Interested to know what people think of this. Thanks!
[1]: https://kiln.sh
Although from first look, I can tell you that there's a lot of text on the site and it's a bit too cramped. From my perspective, tools like these should get out of the way and the UX should be self-explanatory for an image "conversion" tool. Basically, just a box to select, drag/drop images, a few user inputs such as the output quality and format. That's about it. A single line at the top explaining what the tool does (and that it is local) should be good enough.
Also, the title says "PNG to JPG converter," but the rest of the site claims it can convert to quite a lot more than just those format. You can possibly change that to, as an example, something like: "ImageConverter - Convert images between formats, locally". And you can get rid of multiple pages, turning it into a single-page with all the possible output options.
As a sidenote, I've been using Mazanoke for this: https://github.com/civilblur/mazanoke. It's not my project, just something I happened to stumble upon a while ago, but it's similar to your project and works exactly like you would want it to.
From my test, the rest of it works great. Good luck!