Responsive web design is based on screen resolution or screen size?

For mobile devices the resolution is actually big, only screen size is small.
based on that:

  • For websites design, do we target screen resolution (e.g 1920×1080)?
  • And for mobile apps. do we target the screen size?


Responsive design is based on neither screen resolution nor screen size. Instead, responsive design is based on the content and how it’s made which allows it to fit all sizes and resolutions.

The way you’re thinking about responsive design is wrong. I assume you’re coming from a more conventional print design background, yes? Designing for the web is much more freeing. Responsive websites don’t often have the same, conventional breakpoints or specific sizes/resolutions that they are made for because the web allows for more than that – it allows for all screen sizes to be reached. A such, you can design using whatever sizes is right for what you’re designing so long as they are reasonable.

With that being said, the best practice is to design in a mobile-first way, which really should be named mobile-most-important. This forces you to focus on the content that is most important and possible and then allows you do add more for bigger screens instead of forcing you to start with more on large screens then remove things when designing for smaller ones. You can read more about this in my responsive design primer.

But we also have to design in ways that allow for responsivity. The best practice of which is a live example, whether in prototype form or in some wireframing program, not a static document like a PSD. When it comes to the developer side, we should be using responsive units and structuring our code in a way that makes sense.

With that being said, you should put things in terms of pixels, meaning resolution, not screen size.

Source : Link , Question Author : Engineeroholic , Answer Author : Zach Saucier

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