Service
Web Design and Development: Fast Websites That Pass Core Web Vitals and Convert
Sites that load fast and turn visitors into customers
We design and build websites and web applications that load fast, pass Google's Core Web Vitals, and are engineered to convert. Speed, accessibility and clean technical SEO are written into the code from the first line, not bolted on later. You don't get a recycled template: you work with the same Istanbul team that builds and runs our own production software, Welda Stock and Welda Clinic. That means real custom engineering, measured against Lighthouse scores and conversion numbers, not just a pretty mockup.
The Problem We Solve
When your website works against you
Your site loads slowly and breaks on mobile, so visitors leave before they ever see your offer.
The design looks dated and doesn't earn trust, so people who land on it quietly bounce to a competitor.
You can't update your own content, and the site barely shows up on Google or turns visits into enquiries.
Scope
What's included
Custom websites & corporate sites
Brand-aligned, trust-building sites engineered from scratch, not a stock theme, so the structure fits your business and converts.
Landing pages that convert
Fast-loading, focused pages built for campaigns, launches and paid traffic, with clear calls to action and conversion tracking.
Web applications
Dashboards, portals and customer areas on a scalable, maintainable codebase, built by the team behind Welda Stock and Welda Clinic.
Performance & Core Web Vitals
We optimize LCP, CLS and INP, compress assets and ship lean code so the site passes Core Web Vitals on real devices.
Technical SEO & analytics
Clean markup, fast pages, structured data, plus Search Console and GA4 set up so you can see traffic and conversions from day one.
CMS, hosting & maintenance
A content system so you edit pages yourself, reliable hosting, and optional packages for security, updates and performance monitoring.
Process
How we work
Discovery & scope
We clarify your goals, audience and conversion targets, then agree on the sitemap, pages and scope so there are no surprises.
Design in Figma
We design the interface, user flow and content layout around your brand in Figma and refine it with you before a single line of code is written.
Development
We build in fast, modern code (Next.js/React or WordPress), set up the CMS and integrations, and tune performance against Lighthouse as we go.
Launch & support
We test, optimize Core Web Vitals, go live on Vercel/Netlify or your host, hand over the code, train your team and stay on for maintenance.
Tools & Platforms
Tools we use
Metrics We Track
What we measure
- Core Web Vitals: LCP, CLS and INP
- Lighthouse performance score
- Page load time on mobile and desktop
- Mobile responsiveness across devices
- Conversion rate and form completion
- Bounce rate
Deliverables
What you receive
FAQ
Frequently asked questions
How much does a website cost?
There's no fixed price; it depends on scope, number of pages, design and integration needs. We don't sell off-the-shelf packages, so we scope and quote against what you actually need. Reach us at get@welda.app for a tailored estimate.
Do I own the site and the code?
Yes. The site, the design and the source code are yours, with documentation, and we don't lock you in. You can host it where you like and take it to another developer if you ever want to.
Can I edit the site myself afterwards?
Yes. We set up a CMS so you can update text, images and pages on your own, without writing code or coming back to us for every change. We train your team on how to use it.
Do you handle hosting and ongoing maintenance?
Yes. We can deploy to Vercel, Netlify or your own host and offer optional maintenance packages covering security updates, performance monitoring and further development. Or you can manage hosting yourself, the choice is yours.
Will the site be fast, mobile-friendly and SEO-ready?
Yes, and we measure it. Speed, mobile responsiveness and technical SEO are written into the code from the start, and we tune the site against Core Web Vitals and Lighthouse so it performs for real users and search engines, not just on paper.
Other Services
Other digital solutions from Welda
Let's talk about your project
Tell us what you need and we'll prepare a tailored quote. No commitment required.