Responsive Design: Basics, Examples & Best Practices




Updated 2/3/2024

Find basic responsive design principles and best practices. Learn how to create web layouts and provide a good experience across devices.

responsive design - multiple canvases of art

Responsive design is a web design and development approach aimed at crafting websites to provide an optimal viewing experience across a wide range of devices.

It ensures your website looks good and functions smoothly, whether someone is accessing it from a desktop computer, a tablet, or a smartphone.

Why is Responsive Design Important?

In today’s diverse device landscape, ensuring your website caters to various screen sizes and resolutions is a necessity. Here’s a breakdown of the pivotal reasons:

  1. Ubiquity of Mobile Devices: With an ever-increasing number of users accessing websites via smartphones and tablets, a responsive design ensures you don’t alienate a significant portion of your audience.
  2. Improved User Experience: A responsive site leads to a better user experience. If users can access and navigate your website easily on any device, they’re more likely to stay longer and return in the future.
  3. Boosted SEO Rankings: Search engines, particularly Google, favor mobile-friendly websites. A responsive website can lead to better SEO and search performance.
  4. Cost-Efficiency: Maintaining separate sites for desktop and mobile can be costly and time-consuming. Responsive design allows for a single site that works seamlessly across all devices.
  5. Reduced Bounce Rate: Non-responsive sites can frustrate users, leading to a higher bounce rate. Ensuring a smooth experience can keep visitors on your page longer.
  6. Future Scalability: As new devices with various screen sizes come into the market, a responsive design ensures your website is prepared for whatever the future holds.

The bottom line is that it ensures your site and content look good, no matter how they’re viewing it. This is the result of a few web development techniques that examine screen width and adjust to it.

How Does Responsive Design Work?

The magic lies in its adaptability. As the screen size changes, the website restructures and resizes itself, making sure the content remains accessible and visually coherent. This is achieved through a combination of techniques:

  • Flexible Grids: The design is built using percentage-based grids instead of fixed units like pixels. This ensures that layout components resize in relation to one another.
  • Breakpoints: The points at which a website’s content and design will adapt in a certain way to provide the user with the best possible layout to consume information.
  • Adaptable Images: Images used in responsive designs are flexible and can adjust within their containing elements.
  • Media Queries: These apply styles based on the device’s characteristics, like width or orientation. For instance, a website might have one look for tablets in landscape and another for portrait views.

Developers use these to build sites that work well in a variety of sizes. Many considerations go into adapting to challenges and completing work.

How to Test Designs for Responsiveness

Fortunately, numerous tools exist that will help you understand how your site functions across a variety of devices. We’ll start with the good old-fashioned method, but check out the dedicated tools if you’re serious about responsive design.

Manual Testing on Devices

The most straightforward way to check your site’s responsiveness is by manually accessing it on various devices you have at hand.

  1. Smartphones: If possible, check on both Android and iOS devices, as each might render websites slightly differently.
  2. Tablets: Again, test on both an iPad and an Android tablet if possible.
  3. Desktops: Adjust the size of your browser window to see how the site adapts.

While manual testing gives you a real-world view, it’s limited by the devices you have access to. This is where online tools come into play.

Using Online Testing Tools

Several online tools can simulate how your website looks across a multitude of devices:

  1. Google’s Mobile-Friendly Test: A simple tool provided by Google. Input your website’s URL, and it will tell you if it’s mobile-friendly and offer some basic feedback.
  2. Responsive Design Checker: This tool provides a visual check of your site across various screen sizes simultaneously.
  3. BrowserStack: An advanced platform that lets you test your website on real devices and browsers. It’s particularly useful for checking older versions of browsers or less common devices.

Browser Developer Tools

Modern web browsers come equipped with developer tools that allow you to simulate different devices. Shortcuts are for macOS:


  1. Go to View > Developer > Developer Tools (Opt+Cmd+I)
  2. Click on the device icon (Toggle Device Toolbar) to choose from various device presets or define custom screen sizes. These should appear above the view of your site.


  1. Go to Tools > Browser Tools > Responsive Design Mode (Opt+Cmd+M)
  2. Use the toolbar at the top to test various screen sizes.


Unlike Chrome and Firefox, you have to adjust your settings to enable the tool. This process includes that; skip if you’ve done it.

  1. Go to Safari > Settings (Cmd + ,)
  2. Click on the Advanced tab on the far-right.
  3. Click Show Develop menu in menu bar at the bottom.

Now you should see a Develop option in your top menu when using Safari. This is where the tool resides.

  1. Go to Develop > Enter Responsive Design Mode (Ctrl+Cmd+R)
  2. This will provide you a variety of (Apple) screen options.

From there, it’s a matter of checking your pages at different screen sizes using these tools and fixing what needs to be addressed.

Consider Different Network Speeds

It’s not just about how your site looks but also how it performs. Tools like WebPageTest allow you to simulate different network speeds to ensure your site loads efficiently, even on slower connections.

Feedback and User Testing

Sometimes, the best insights come directly from users. Gather feedback from users accessing your site on different devices. Platforms like UserTesting let you get real-world feedback from users on various devices.

Automated Testing

For those with more advanced needs, automated testing frameworks like Selenium or tools like Cypress can be set up to automatically test the responsiveness and functionality of your site across various devices and screen sizes.

Testing your responsive design is a continuous process, not a one-off task. As new devices emerge and web standards evolve, regular testing ensures that your website remains accessible and user-friendly for all visitors, no matter their device of choice.

Best Practices for Responsive Design

As you embark on creating or optimizing a responsive website, keeping some best practices in mind is essential. These guidelines will ensure that your site looks great and provides a seamless user experience across all devices.

1. Start with Mobile-First Design

Start with mobile specifications rather than designing for a desktop and then scaling down. This approach ensures that:

  • Your content is prioritized correctly for smaller screens.
  • You avoid unnecessary complexities that might not be needed for mobile users.

2. Use Fluid Grids

Instead of using fixed-width layouts, opt for fluid grid systems. This ensures that:

  • Elements resize in relation to one another.
  • Your design remains consistent across various screen sizes.

3. Prioritize Performance

A responsive design isn’t just about fitting content; it’s also about performance. Remember to:

  • Optimize images for faster loading times.
  • Minimize the use of heavy scripts or unnecessary code.
  • Test loading times on various devices and network speeds.

4. Be Mindful of Touchscreen vs. Non-touchscreen

Different devices have different interaction methods. Ensure that:

  • Button sizes are adequate for touchscreen users.
  • Hover effects that work for desktop users have a touchscreen alternative.

5. Use Scalable Vector Graphics (SVGs)

Instead of using pixel-based images:

  • Utilize SVGs where possible as they remain crisp and clear at any resolution.
  • They also tend to be smaller in file size, aiding in faster load times.

6. Ensure Text is Readable on All Devices

Text size and layout play a significant role in usability:

  • Avoid too small fonts that force users to zoom.
  • Ensure line spacing and text blocks are optimized for mobile reading.

7. Test Extensively

As with any web project:

  • Regularly test your design on various devices, browsers, and orientations.
  • Use both manual and automated testing tools for comprehensive coverage.

8. Limit Media Queries

While media queries are powerful:

  • Avoid using an excessive number, as they can make your stylesheet complex and hard to maintain.
  • Aim for broader breakpoints that cater to a range of device sizes.

9. Test Third-party Plugins or Widgets

Sometimes external components might not be optimized for responsive design:

  • Test any third-party additions thoroughly.
  • Consider custom solutions if external components degrade the user experience.

10. Continuously Update and Adapt

The tech landscape is ever-evolving:

  • Regularly review new device releases and screen size trends. For example, Apple’s Vision Pro isn’t exactly a standard device.
  • Adapt your design to cater to emerging norms and user behaviors. VR anyone?

Responsive design is an ongoing commitment. By adhering to these best practices and keeping the user’s experience at the forefront of your design decisions, you’ll ensure that your website remains accessible, user-friendly, and ahead of the curve.

Bottom Line

Responsive design is about ensuring your website or application is accessible and user-friendly on any device. This approach has become essential with the rise of mobile browsing and device variety.

The foundation of responsive design lies in fluid grids, flexible images, and media queries. Regular testing, on both emulators and real devices, ensures your design works everywhere. The goal is always to offer the best possible experience to your users, no matter how they access your site. ?


Get Powerful Templates

Streamline your content management
with dynamic templates and tools.