Hi — I'm the person behind yydev.
I'm a developer who likes building small, useful things and explaining how they work. yydev is where I put all of it in one place.
How this started
For a long time yydev was just a messy folder on my laptop: half-written notes, code snippets I kept copying between projects, and little tools I'd hacked together for myself. At some point I realised other people might find them useful too, so I started tidying them up and putting them online.
That's really all this is. Not a startup, not a content brand — just one developer sharing the things I build and learn, in the hope they save someone else a bit of time.
What you'll find here
There are three parts to it, each on its own subdomain:
- Learn AI — the material I've been putting together for anyone who wants to actually understand and use AI, not just read headlines about it.
- Dev Tools — small browser tools I made for my own workflow: formatters, converters, and the like. They run locally in your browser and don't send your data anywhere.
- The blog — where I write things up properly. If I spent a weekend figuring something out, there's a decent chance I wrote a post about it.
How I try to write
Two rules I hold myself to:
- I only write about things I've actually done or used. If I'm unsure about something, I say so rather than dressing it up.
- I aim for the explanation I'd give a friend over coffee — plain language, real examples, and no pretending a hard thing is easy.
I'd rather publish one post I'm proud of than ten I churned out to fill a schedule. So the blog grows slowly, and that's on purpose.
How it stays free
Running a site costs a little money and a fair bit of time. To cover that, I show some ads. That's the whole business model — no paywalls, no "premium tier," no course I'm secretly funnelling you toward. If I ever recommend a product, I'll tell you plainly whether there's an affiliate link involved.
Say hello
If something here helped, if you spotted a mistake, or if you just want to say hi, I genuinely like hearing from people. The contact page is the easiest way to reach me.