Simple Yet Important utilities

Welcome to SYI (es-why-I), a set of small web tools that stay fast, private, and easy to understand. Every app runs in the browser so you can use it without making an account or sharing more than you want.

I am PioterekS, a builder of tidy side projects. I keep each tool simple, ship it when it already helps me, and then polish it based on the questions people ask.

SYI is my test bench for clean code, light analytics, and useful UI. ⚡

Free Parking (free-parking) for Green Day and University

Finding a spot means guessing or refreshing a bare list of numbers in traditional app not knowing if figures are valid or outdated. Free Parking gathers the feeds from the Green Day garage and from the university leased lots, checks how fresh they are, and warns you if the data is stale.

The main screen shows the live count and two days of charts so you can see when each lot fills up or clears out.

Open the app, and glance at today’s line versus yesterday’s trend. It works on phones and laptops. If the upstream feed stops, the app keeps the last value and shows how old it is. Additionally, in case of data not available for one of the feeds, figures are approximated.

  • 🛰️ Aggregates Green Day and University figure in one place.
  • 📈 Shows two-day trends so you can plan ahead.
  • ⏱️ Displays data freshness to warn about stale feeds.
  • Figures are approximated when fresh data is unavailable.

Run the app: /free-parking/

WordRef Search (🇪🇸 esp-dict)

Studying Spanish with web dictionary often require to use three or four options to get different types of definitions, synonyms, conjugations and translation. 🇪🇸 Esp-Dict search keeps everything in one place so you can read definitions, synonyms, and English hints without the extra clicks.

The app runs your query once, caches all results for a short time, and presents them as simple cards that scroll well on mobile. Jump to synonyms, scan the RAE entry, or expand the English helper when needed.

Type a Spanish word for deep detail or an English word for a reverse translation.

  • 📚 RAE definition definition and WordReference synonyms synonyms, and English translations side by side
  • 🔁 Works for Spanish→Spanish and English→Spanish queries
  • 📱 Card layout tuned for quick thumb scrolling

Run the app: /esp-dict/

VCF Contact Generator (vcf-gen)

The VCF Contact Generator builds contact lists in seconds using simple wildcard patterns.

Enter a phone number, add one or two wildcards, see the preview, and export a VCF file with 10 or 100 numbers that any modern phone can import. All work happens in your browser, so the numbers never reach my server. Once you add contacts, you can use them for legitimate purposes, such as creating test data for software development or organizing your phonebook.

Please use it responsibly and avoid using it for spam or any malicious activities.

  • 🧮 Wildcard expansion preview before you export.
  • 🔐 100% client-side processing for your number lists.
  • 📱 Output compatible with most Android and iOS contact apps.

Run the app: /vcf-gen/

About, Privacy & Terms

If you need details about how the site works or who to contact, check the About page, the Privacy page, and the Terms and Conditions. They outline the stack, the policy on data, liability, and the best way to reach me.

  • ⚡ Fast, browser-first utilities with no sign-ups.
  • 🧰 Narrow scope per tool so you can focus on one job.
  • 🔐 Privacy-aware telemetry kept to the bare minimum.
  • 📬 Direct contact links for feedback and bug reports.

Need a longer story about the projects? See the About page. Want to know how cookies or logs work, or how to reach me about data? Visit the Privacy page.

  • 🙋 About: background, stack, and maintainer details.
  • 🔐 Privacy: cookie notes, logging policy, and contact info.
  • ⚖️ Terms: disclaimer, liability limits, and user conduct.