Martin Šikula

Hey, nice to meet you

So you clicked on "Author". Cool. I'm Martin. I run Šikulovi s.r.o. - basically a 3-person web shop in the Czech Republic. We do e-commerce, company websites, some custom apps. Nothing fancy, but we've been at it for 15 years and somehow haven't gone bankrupt yet.

Here's the backstory on CodeUtil: I was debugging some auth issue at 11pm (classic) and needed to decode a JWT. Googled for a tool, found one covered in ads, pasted the token, then had that horrible moment of "wait, where did my client's production token just go?" It was probably fine. Probably. But that was my wake-up call.

What this actually is

CodeUtil is not revolutionary. It's not even particularly impressive. It's just a bunch of dev tools that run in your browser. JSON formatter, regex tester, Base64 encoder, JWT decoder - you know, the stuff we all google for 3 times a week.

The only difference? Your data stays on your machine. There's literally no backend. I couldn't see your data even if I wanted to. Which I don't. I have enough problems with my own code.

Quick facts:

• 22 tools, all free, no catch
• Works offline after first load
• No accounts, no email capture, no premium tier
• Built with Next.js because that's what I know

When I'm not staring at VS Code

I do parkrun on Saturday mornings (my time is mediocre but consistent), play board games with friends when we can coordinate schedules (harder than any project I've ever managed), and consume way too much coffee. Currently experimenting with the Pomodoro technique. Results inconclusive.

Want to chat?

Found something broken? Got an idea for a tool? Or just bored and want to complain about JavaScript? Hit me up. I actually read my emails, usually within a day or two.