Responsive web development for every device
Front-end code that adapts cleanly from the smallest phone to the widest screen, and stays fast on both.
Responsive Web Development starts at From $2,499
Why Responsive Web Development matters
Responsive design is a plan. Responsive development is making that plan work in real browsers, on slow connections and on cheap phones. That is where most sites fall apart.
We write mobile-first CSS, serve images at the right size for each screen and load only the scripts each page needs. Then we test on real devices and measure Core Web Vitals in the field, not only in a lab.
Core Web Vitals: where we aim
Google's thresholds, measured at the 75th percentile of real visits
View as table
| Metric | Good | Needs work | Poor | Our target |
|---|---|---|---|---|
| LCP | ≤ 2.5 s | 2.5–4 s | > 4 s | ≤ 1.8 s |
| INP | ≤ 200 ms | 200–500 ms | > 500 ms | ≤ 150 ms |
| CLS | ≤ 0.1 | 0.1–0.25 | > 0.25 | ≤ 0.05 |
What's included in our Responsive Web Development service
Mobile-first CSS
Base styles for phones, with media and container queries for larger screens.
Responsive images
srcset and modern formats so phones never download desktop-sized images.
Touch and keyboard support
Menus, sliders and forms that work with fingers, mice and keyboards.
Performance budgets
Limits on page weight and scripts so speed does not slip over time.
Cross-browser QA
Testing in Chrome, Safari, Firefox, Edge and Samsung Internet.
Retrofits
Make an existing desktop-only site responsive without starting over.
Is this right for you?
Responsive Web Development is usually a good fit if any of these sound familiar.
- Your site was built before mobile mattered
- Mobile pages fail Core Web Vitals
- Your menus or forms break on phones
- You want to merge a separate mobile site
How our Responsive Web Development process works
Device audit
We record how your site behaves on common phones and tablets.
Fix plan
A prioritized list: what to retrofit and what to rebuild.
Development
Mobile-first code changes, image pipeline and script cleanup.
Field testing
We check real-user data in Search Console after launch.
Platforms and tools we use
- HTML5
- CSS3
- Container queries
- JavaScript
- Lighthouse
Responsive Web Development pricing
Every project is quoted at a fixed price after a short call, so you know the cost before we start.
Starting price: From $2,499
What affects the price
- Number of pages, screens or features
- Integrations with other systems
- Content and copywriting needs
- Timeline and launch date
Related services
Website Development
We build websites and web platforms that are quick to load, safe to run and easy to grow.
Custom Web Development
When a plugin or template will not do the job, we build exactly what you need.
WordPress Web Development
Custom themes, custom plugins, speed fixes and migrations from developers who know WordPress inside out.
Shopify Web Development
Custom Liquid sections, private apps, integrations and speed fixes from experienced Shopify developers.
Ecommerce Web Development
Reliable online stores with the payments, integrations and speed you need to grow.
Magento Web Development
Custom modules, upgrades, integrations and speed fixes for Magento 2 and Adobe Commerce.
Responsive Web Development FAQs
Straight answers. Still unsure? Ask us directly.
Can you make my old website responsive?
Usually yes. If the site is built on a modern CMS, we can retrofit the theme. If it uses old table layouts or Flash-era code, a rebuild is faster.
How do you measure mobile performance?
We use Lighthouse and PageSpeed Insights for lab tests, and Chrome UX Report data in Search Console for real-user results.
Will a responsive site improve my rankings?
It removes a common ranking drag. Google indexes the mobile version of your site, so a poor mobile experience can hold you back.
Ready to get more from your website?
Get a free audit of your site's speed, SEO and conversion issues. A real person reviews it and sends you the report.