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English
$
USD
I will create a responsive HTML CSS javascript website with pwa and firestore
Den
About this gig
Looking for a fast, modern, responsive website built with clean HTML, CSS, and JavaScript? You're in the right place.
I'M BACK IN BUSINESS!
After a few years away, I'm back with more experience, sharper skills, and a fresh portfolio of live websites and web apps.
I build custom websites from scratch no WordPress, no templates. Just clean, hand-coded, lightning-fast sites.
WHAT I OFFER:
- Responsive websites (HTML, CSS, JavaScript)
- Progressive Web Apps (PWA) works offline, installable
- Firestore database integration
- License systems via Payhip/Gumroad synced with Firestore
- Modern UI/UX with smooth animations
- Clean, maintainable source code
LIVE PROJECTS:
- deniscasian.com (portfolio)
- movies.deniscasian.com
- tools.deniscasian.com
- qr.deniscasian.com
- aihub.deniscasian.com
Tools and QR are fully functional PWAs working offline. Multiple projects include license systems and Firestore backends.
️TECH: HTML5, CSS3, JavaScript, Firebase/Firestore, PWA, Python (standalone apps only)
Every site is speed-optimized, SEO-friendly, and works on all devices.
I'm excited to be back and ready for great projects. Let's build something amazing!
Message me before ordering to discuss your project!
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Den
Den
Fast responsive websites and PWAs, no templates just code
- FromRomania
- Member sinceOct 2019
- Avg. response time3 hours
- Last delivery5 years
Languages
English, Romanian
Back in business after 4 years!
I build custom websites and web apps from scratch with HTML CSS and JavaScript. No WordPress, no templates - just clean, hand-coded, fast sites.
After a few years away I am back with sharper skills and live projects you can test right now.
I specialize in responsive websites, Progressive Web Apps with offline support, Firebase integration, and Payhip subscription systems.
I have built 200+ tools in a single PWA, movie platforms, QR generators, and AI hubs - all live at deniscasian.com.
Every site is fast, responsive, and clean code. Lets build something great!
My Portfolio
Other Website Development Services I Offer
FAQ
Can my website work offline like a native app?
Yes! I specialize in building Progressive Web Apps (PWA). Your website can be installed on any device and work without internet — all assets are cached locally. Check out tools.deniscasian.com or qr.deniscasian.com for live examples.
Do you use WordPress or templates?
No. Every website I build is 100% hand-coded from scratch using HTML, CSS, and JavaScript. This means faster loading, cleaner code, full customization, and no unnecessary bloat.
Can you add a database to my website?
Absolutely. I integrate Google Firestore for real-time data storage, user authentication, and dynamic content. This is ideal for web apps that need to store and retrieve information.
Will my website be mobile-friendly?
100%. Every site I build uses a mobile-first responsive design approach. It will look and function perfectly on phones, tablets, laptops, and desktops.
What is the license system you offer?
I use trusted platforms like Payhip or Gumroad to handle payments and license key generation. These are then synced with Firestore in real-time, so your website or web app can automatically verify and activate licenses. This means a seamless, fully automated experience for your customers — they purc
Can I see examples of your work before ordering?
Of course! Visit deniscasian.com for my full project portfolio. You can also explore individual projects like movies.deniscasian.com, tools.deniscasian.com, qr.deniscasian.com, and aihub.deniscasian.com.
Do you provide the source code?
Yes, you receive the complete source code with every order. It's clean, commented, and easy to maintain or extend in the future.
Can you also work with Python?
Yes, but only as a separate standalone application. I build Python desktop apps, automation scripts, and tools as independent projects. I do not offer Python server-side or backend hosting. If you need a standalone Python application, feel free to message me and we can discuss your idea.
