Business websites
Responsive website development
A responsive website adapts its layout to the screen it is viewed on, from a small phone to a wide monitor. Done well, visitors never notice; done badly, text is tiny, buttons are hard to tap and content spills off the screen.
We develop responsive websites mobile-first, using flexible layouts and images, and test them on real devices and widths before launch.
Illustrative diagram
- Small phoneSingle column, priorities first
- Large phoneLarger media, same order
- TabletTwo columns where helpful
- DesktopMulti-column, wider spacing
Mobile-first, then wider
Mobile-first development starts with the smallest screen, where space is scarce and priorities must be clear, then adds layout as more room becomes available. It tends to produce cleaner, faster pages than shrinking a desktop design down.
Layouts change at breakpoints chosen by the content, not by particular devices. When a line of text becomes too long to read comfortably, or cards become too narrow, the layout adapts.
Common responsive problems and fixes
| Problem | Fix |
|---|---|
| Page scrolls sideways | Find the element wider than the screen and let it wrap or scroll within its own container |
| Buttons hard to tap | Larger tap targets with spacing between them |
| Tables unreadable on phones | Scrollable table containers or stacked layouts |
| Images too heavy for mobile | Serve appropriately sized images for each screen |
| Menu covers content | Simple mobile navigation that opens and closes predictably |
How responsive sites are tested
Widths and devices
- Small phones, large phones, tablets, laptops and wide screens
- Real devices as well as browser simulation
- Portrait and landscape orientation
Behaviour
- No sideways scrolling at any width
- Forms usable with an on-screen keyboard
- Keyboard navigation with visible focus
- Text resizes without breaking layouts
Responsive also means fast on mobile
A layout that fits a phone but takes too long to load is still a poor mobile experience. Google's Core Web Vitals treat a Largest Contentful Paint within 2.5 seconds as good, and an Interaction to Next Paint of 200 milliseconds or less as responsive.
We keep pages light by sizing images for each screen, loading only what each page needs and avoiding heavy elements above the fold on small screens.
When responsive work is needed
Older fixed-width sites
Built for desktops, now hard to use on phones.
Partially responsive sites
Most pages adapt, but tables, forms or menus break.
New builds
Responsive behaviour planned from the first design.
Flexible images and media
Images are the most common cause of slow mobile pages. Responsive development serves images in several sizes so a phone downloads a small version and a wide screen a larger one, and reserves space for each image so content does not jump while loading.
Videos, maps and other embedded content need the same treatment: they should scale with the page and load only when needed, rather than delaying everything above them.
Forms on small screens
Forms are where mobile visitors most often give up. Fields should be large enough to tap, labelled clearly above the input, and use the right keyboard for each field, such as a number pad for phone numbers. Error messages should appear next to the field and explain how to fix the problem, without clearing what the visitor already typed.
Questions about responsive website development
What does responsive mean for a website?
The layout adapts to the screen size, so the site is comfortable to use on phones, tablets and computers.
Is mobile-first better than desktop-first?
Usually. Starting from the smallest screen forces clear priorities and tends to produce lighter pages.
Can an existing site be made responsive?
Often, though very old sites may be easier to rebuild. We review the site and recommend the more economical route.
How do you test responsive sites?
Across a range of widths and on real devices, checking layout, forms, navigation and keyboard use.
Why does my site scroll sideways on phones?
Usually one element is wider than the screen, such as a table, image or embedded content. It can be found and fixed.
Does responsive design affect search visibility?
Search engines assess the mobile version of sites, so a poor mobile experience can work against you.
How fast should a responsive site load on mobile?
On phones, the main content should appear within about 2.5 seconds, the level Google's Core Web Vitals describe as good. We test on mobile connections, not just office Wi-Fi.
Do responsive sites work on tablets?
Yes. Tablets are tested in both orientations as part of the range of widths.
Does responsive development cost more than a desktop-only site?
Today, every professional site should be responsive, so it is part of normal development rather than an extra.
Sources referenced
Platform features, guidance and rules change. We check the current versions before committing to an approach. This page is general information, not legal advice.
- web.dev (Google): Web Vitals (opens in a new tab) — reviewed 2026-10-22
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