Achetez un café à Roel van Roozendaal

Hey! 👋 I'm Roel.

I build free tools that respect your time, your privacy, and your intelligence. No sign-ups. No tracking. No dark patterns. Just open a URL and get to work.

My latest project is PocketLab Tools, a growing suite of precision utilities for developers:

🔧 Mermaid diagram converter

🔧 JSON formatter & validator

🎨 Color palette generator

...with more shipping every month.

🔗 pocketlabtools.com

I also built PluginSmith (turns docs into Claude Code plugins) and Urban Rider (scooter nav that actually knows city streets).

🔗 pluginsmith.app

Here's the thing. All of this is free. No subscriptions, no premium tiers, no "sign up to unlock." I build these because I needed them, and I keep them free because I think great tools shouldn't have a paywall.

But free doesn't mean it costs nothing to make. Every tool takes nights, weekends, and way too much coffee to build, test, and keep running. ☕️

If a tool I built saved you 10 minutes, fixed a headache, or just made your day a little smoother, consider buying me a coffee. It directly funds the next tool and feature and keeps everything free for everyone.

Thanks for supporting independent dev work from Berlin. 🙌