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What is responsive web design?

Short answer

Responsive web design means one website that adapts its layout to any screen, from a small phone to a wide monitor. The same content rearranges, with columns stacking, images resizing and menus collapsing. It replaced separate mobile sites. Google recommends it because one URL and one set of content are simpler to crawl and maintain.

In this answer
  1. 01How it works
  2. 02Why it matters for search
  3. 03Responsive is not enough on its own
  4. 04How we build it

How it works

Responsive sites use flexible layouts, images that scale and CSS rules called media queries. When the screen gets narrower, the layout changes. Three columns become one, navigation moves behind a menu button and images shrink to fit.

One page across three screens
  1. DesktopThree columns of services side by side with a full menu.
  2. TabletTwo columns, with a shorter menu and larger tap targets.
  3. PhoneOne column, a menu button and a call button in reach.

Google indexes the mobile version of your pages. With a responsive site, the mobile version is the same page with the same content, so Google sees everything. Older setups with a separate mobile site at a different address need extra care to keep content and tags matched.

Responsive is not enough on its own

A layout can technically fit a phone and still work badly. Check these too.

  • Text is readable without zooming.
  • Buttons are big and spaced for thumbs.
  • Forms use the right keyboard for phone and email fields.
  • Nothing important hides on small screens.
  • Images do not load at desktop size on phones.

Good example. A gym's class schedule turns into a simple list on phones, with a book button on each class.

Bad example. The same schedule shrinks into a tiny table that visitors must pinch and drag to read.

How we build it

We design the phone layout first, then expand for larger screens. That keeps the most important content and actions at the top, where phone visitors need them.

Read why mobile-first design matters. Our web design team tests every page on real phones before launch.

Keep reading

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