Martin Šikula

Hey there!

I'm Martin, the person behind CodeUtil. I run a web agency called Šikulovi s.r.o. in the Czech Republic, where we build websites, e-commerce stores, and various web applications.

Like most developers, I spend a lot of time formatting JSON, testing regex patterns, encoding/decoding data, and doing all those small tasks that are part of everyday development work. I got tired of constantly googling for tools - each time dealing with slow websites, intrusive ads, or worrying about pasting sensitive data into random online tools.

Why I built this

I'm not going to pretend CodeUtil is revolutionary. It's just a collection of developer tools that I actually use daily. The key difference? Everything runs in your browser - your data never leaves your device.

I built it this way because I use these tools with production API keys, JWT tokens, and sensitive configuration. If I wouldn't trust a tool with my own credentials, I wouldn't expect you to either.

What you get:

• 22 developer tools, all free
• Everything runs client-side (your data stays with you)
• Works offline once loaded
• No registration, no premium tiers, no usage limits

What I do when I'm not coding

When I'm not building websites or adding new tools to CodeUtil, I experiment with various productivity techniques (with mixed success), play board games, and try not to procrastinate. I also run occasionally - parkrun is a good motivator.

Get in touch

Found a bug? Have an idea for a new tool? Just want to say hi? Feel free to reach out - I read every message.