Responsive web design services

Your mobile visitors can't convert if they can't use your site. We fix that.

63% of web traffic arrives on a phone. Most of that traffic bounces from sites built for desktop in 2018. Redefine builds responsive websites that load fast, work on every device, and turn mobile visitors into customers. We have done it 50+ times.

50+ responsive builds deliveredCore Web Vitals on every project

Share of global web traffic from mobile

63%

If your site is not responsive, you lose more than half your audience the second they arrive.

2.8s

Your target load time. We hit it on mobile.

4x

How much more likely bad mobile UX drives visitors away.

Web developer reviewing responsive website mockups on laptop, tablet, and phone simultaneously at a bright studio desk
The cost of a non-responsive site

Half your audience is on a phone. Here is what they hit when your site is not built for it.

See the difference side by side. One experience drives visitors away. The other turns them into customers. The difference is not aesthetic. It is revenue.

What mobile visitors hit on a non-responsive site

The menu is impossible to use without pinching and zooming

Text is the size of a footnote. Reading it means zooming in on every paragraph.

Checkout button is cut off by the screen edge. Tapping it does nothing useful.

Images push past the screen. The page scrolls sideways on every load.

Google ranks your page lower because mobile visitors leave in seconds.

Result: 8 in 10 mobile visitors leave within 8 seconds

Mobile viewport · Non-responsive

Navigation bar, overflows off screen

HomeProductsAboutContact

Hero image, overflows container

This text is completely unreadable at this size because the site was built for desktop only and never scaled for mobile viewports or touch interactions

Call to action button cut off by viewport
Bounce rate: 82% on mobile
Marketing manager calmly reviewing the freshly launched responsive mobile website on a smartphone, satisfied with the result
Real-time mobile performance

These are the numbers your analytics show 90 days after a Redefine responsive build

Every metric below is from a live Redefine client project. Mobile traffic climbed 18 points. Mobile conversion jumped from 0.4% to 2.8%. Bounce rate fell from 82% to 34%. Your results will vary by industry and starting point. These are real numbers from a real build.

Cross-device performance dashboard · Post-launch data
Live

Mobile traffic

0%

+18 points since launch

Mobile conversion

0%

Up from 0.4%

Bounce rate

0%

Down from 82%

Pageviews

0%

+35% post-launch

Core Web Vitals · Mobile

LCP (Largest Contentful Paint)

Good

0.0s

Under 2.5s — pages load fast enough to keep visitors on the page

FID (First Input Delay)

Good

0ms

Under 100ms — the site responds to taps and clicks instantly

CLS (Cumulative Layout Shift)

Good

0.00

Under 0.1 — content stays where it renders, no layout jumping

Device breakdown · Sessions

Mobile
63%
Desktop
29%
Tablet
8%
Responsive design deliverables

What you get on every responsive web design project

We design the mobile layout first. Then we build up to tablet and desktop. Your mobile experience is the primary product, not an adapted copy of the desktop version.

  • Every button and link is large enough to tap without precision on the smallest phone
  • Body text is always at least 16px. Readable on a 320px screen without zooming.
  • Navigation collapses to a touch-friendly menu that works with a thumb, keyboard, or screen reader

Breakpoints tested

Mobile S320px
Mobile L414px
Tablet768px
Desktop1280px
Wide1600px

LCP, FID, and CLS are Google's page performance scores. Pass all three and you rank better in mobile search. Fail and you lose ground to any competitor who passes. Every Redefine build targets "Good" scores before the site goes live.

LCP target

Under 2.5 seconds

Images are compressed. Delivery runs through a fast CDN.

FID target

Under 100ms

The page responds to taps and clicks the moment they happen.

CLS target

Under 0.1

Nothing shifts or jumps after the page loads.

We test on physical iPhones and Android phones, not just browser emulation. Real devices catch problems that simulators miss. Your customers use real phones. We test on them.

  • iOS Safari, Android Chrome, Samsung Internet, Firefox Mobile
  • BrowserStack cross-browser compatibility testing across 100+ device configurations
  • Touch, scroll, and gesture testing on physical hardware before any page goes live

Color contrast is checked. Keyboard navigation works everywhere. ARIA labels are in place. Screen reader compatibility is tested before launch. Accessibility is part of the design process. It is not a post-launch audit.

You receive complete Figma files at the end of the project. Every breakpoint is shown. Components are organized and layers are labeled. Your team builds from a clear source, not a screenshot or a memory of a meeting.

Responsive web design pricing

Every project is scoped before work starts. You receive a line-by-line proposal within 3 days. No hourly billing. No scope changes that inflate the invoice.

Client result

One BigCommerce engagement. Pageviews up 35%. Search rankings climbing.

Developer and designer reviewing responsive breakpoint artboards of a website in Figma on a monitor at a bright studio desk

Lizzy's Fresh Coffee

Ecommerce · BigCommerce

Lizzy's Fresh Coffee sells personalized and subscription coffee products direct to consumer on BigCommerce.

The problem

The site had payment errors on mobile checkout. Pages loaded slowly. The personalization feature that customers paid for did not work reliably on phones. Mobile visitors were leaving before they reached checkout.

What we built

One engagement covered a mobile-first responsive rebuild and a redesigned product customization / conversion path. We rebuilt the personalization engine for every device, optimized page speed to hit Core Web Vitals targets, and rebuilt checkout to complete in fewer taps on a phone.

The result

+0%

Pageviews in the months after launch

From one engagement that included the responsive redesign and the redesigned product customization / conversion path

  • Search rankings improved as Core Web Vitals passed on mobile
  • Mobile checkout conversion increased after the personalization feature was rebuilt for phones
  • Page speed scores went from failing to "Good" across all three Core Web Vitals

Platform

BigCommerce · Responsive redesign

How we compare

Most agencies say their sites are "responsive." Here is what that word actually means in practice.

Many agencies pass Chrome's mobile simulator and ship the project. That simulator does not catch the bugs your real customers hit on real phones. This table shows where the gap lives.

What we compare
Typical agency
Redefine

Mobile-first design process

Desktop-first, shrunk for mobile

Mobile designed first, then enhanced

Core Web Vitals optimization

Sometimes included, often not

LCP, FID, and CLS — all three Google performance scores — targeted on every project

Real device testing

Chrome DevTools emulation only

Physical iOS and Android device testing

WCAG 2.1 AA accessibility

Optional, often costs extra

Built into the design from the start. Not added after launch.

Figma responsive source files

One viewport only, sometimes

All breakpoints in Figma, full ownership transferred

Fixed-price project billing

Hourly or retainer, scope creep common

Scoped before work starts. Line-by-line proposal.

Common questions

What buyers ask before hiring a responsive web design service

Mobile-friendly means the site loads on a phone without crashing. Responsive design goes further. The layout changes. Navigation collapses. Text resizes. Buttons grow to a tappable size. A desktop site with a few CSS tweaks is technically mobile-friendly. A responsive site is built for the phone first and for every screen from there.

A responsive redesign of an existing site runs 6 to 12 weeks depending on scope. A new responsive build runs 8 to 14 weeks. A targeted mobile optimization of specific pages runs 3 to 4 weeks. Every timeline includes cross-device testing and Core Web Vitals optimization. We agree on the timeline in the proposal before any work starts.

Yes, directly. Google ranks sites based on the mobile version first. A slow or broken mobile experience lowers your ranking even if your desktop site is fast. Google's Core Web Vitals scores, LCP, FID, and CLS, are confirmed ranking signals. A responsive site that passes all three outranks a non-responsive site on mobile search. Most search traffic is mobile.

Sometimes, but a targeted rebuild usually gives better results. Adding responsive CSS to a site designed for desktop produces fragile code. It looks fine in a browser simulator. Real iPhones and Android phones find the problems. A brief call tells us whether a retrofit or a clean responsive build fits your situation. We recommend what is actually needed.

Pricing depends on site size, platform, and scope of the responsive build. Submit a brief and receive a line-by-line proposal within 3 days. There are no hourly rates or scope creep charges. What we scope is what you pay.

Submit your brief

No commitment. No pitch. A proposal you keep either way.

Tell us your current mobile performance. Describe what is not working on phones. Tell us what you need the site to do better. We scope the work and return a line-by-line proposal in 3 business days. It is yours to keep either way.

Call within 48 hours

A senior engineer reviews your brief and calls to confirm scope, timeline, and fit

Proposal in 3 days

Phase-by-phase plan with a clear timeline and fixed price

Sprint 1 within 1 week of sign-off

Mobile-first wireframes start the week you sign

Your team's time across a responsive design build is 2 to 3 hours per week: one sprint review, async device-testing feedback, and a final sign-off. We handle everything else.

Form
Response within 48 hours
Proposal in 3 days
50+ responsive sites launched
Core Web Vitals on every build
Clean desk with phone and laptop both showing the same responsive website design on different screen sizes
Start here

Describe your mobile problem. We turn it into a build plan. No commitment. No pitch.

Tell us what is not working on your site for mobile visitors. Tell us what you need it to do. We return a line-by-line proposal within 3 business days. Keep it whether you hire us or not.

Get My Proposal in 3 Days

Get on a call with us to see how we can help you

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