Sami Greenbury
Technology, Teaching & Travel

What Minimum Screen Size for Responsive Sites?

Until recently I’ve been testing responsive sites down to 320px out of habit but without really knowing whether it’s worth the effort. After all, Bootstrap 3 only has media queries down to 768px and Bootstrap 4 will be 34em (roughly/often 544px).

So should we bother optimising responsive websites for 320px, 480px, 768px or bring back the 1990s with Best Viewed in 800×600

I had a play with some stat from statcounter.com to find out.

My Process

  1. Show Screen Resolutions for the 12 months up to June 2016.
  2. Filters it for data for the UK (since most of my sites are mostly visited by people in the UK)
  3. Delete all screen resolutions wider than 1000px.
  4. Combine the matching widths – ignoring heights.
  5. Plot them on a graph

The Graph

The graph has two lines – one for individual market share and one for accumulative market share (i.e. how many people have 800px or smaller).

The aim was to find where the browser width jumps to a notable proportion.

responsive-webdesign-optimisation-width

The Results

The results are fascinating! 2.5% of visits come from a browser less than 720px wide but 15% have a screen bigger than that – and nearly double that have at least 800px.

The case for a minimum 720px Width

What to optimise for depends on your market – if you’re happy with 2.5% of your visitors getting frustrated that your site does not work – then don’t bother with less than 720px.

The case for a minimum 320px Wide Responsive Site

Optimising for 320px instead of 360px will only help 0.12% (one person in every thousand) use your site better – for a small business website getting 75 hits a day that’s one person every fortnight who’ll have a less than optimal time on your site.

Finding out who (or what, if they’re bots) are using very narrow screens would also be interesting. Are these bots, browser bugs or perhaps people just making a window smaller to get it out the way for a while? If they’re not your target audience, you can forget them and spend your time making the wider-screen experience excellent.

Raw Data

If you want to have a play yourself, here’s the data formatted as CSV:

Screen Width,Share %,Accumulative Share %
320px,0.121538461,0.121538461
360px,0.576923077,0.698461538
412px,0.049230769,0.747692307
480px,0.011538462,0.759230769
534px,0.244615385,1.003846154
540px,0.01,1.013846154
600px,0.947692308,1.961538462
601px,0.293846154,2.255384616
640px,0.063846154,2.31923077
720px,0.022307692,2.341538462
768px,12.76846154,15.11
800px,13.14846154,28.25846154
819px,0.019230769,28.27769231
854px,0.266153846,28.54384616
900px,0.016923077,28.56076923
911px,0.056153846,28.61692308
962px,0.011538462,28.62846154

Feedback

I’m not statistician and other interpretations of these results might be useful. If you have any feedback or other thoughts – let me know in the comments below.

Tags:
Categories:

2 thoughts on “What Minimum Screen Size for Responsive Sites?”

Leave a Reply

Your email address will not be published. Required fields are marked *

 

000-017   000-080   000-089   000-104   000-105   000-106   070-461   100-101   100-105  , 100-105  , 101   101-400   102-400   1V0-601   1Y0-201   1Z0-051   1Z0-060   1Z0-061   1Z0-144   1z0-434   1Z0-803   1Z0-804   1z0-808   200-101   200-120   200-125  , 200-125  , 200-310   200-355   210-060   210-065   210-260   220-801   220-802   220-901   220-902   2V0-620   2V0-621   2V0-621D   300-070   300-075   300-101   300-115   300-135   3002   300-206   300-208   300-209   300-320   350-001   350-018   350-029   350-030   350-050   350-060   350-080   352-001   400-051   400-101   400-201   500-260   640-692   640-911   640-916   642-732   642-999   700-501   70-177   70-178   70-243   70-246   70-270   70-346   70-347   70-410   70-411   70-412   70-413   70-417   70-461   70-462   70-463   70-480   70-483   70-486   70-487   70-488   70-532   70-533   70-534   70-980   74-678   810-403   9A0-385   9L0-012   9L0-066   ADM-201   AWS-SYSOPS   C_TFIN52_66   c2010-652   c2010-657   CAP   CAS-002   CCA-500   CISM   CISSP   CRISC   EX200   EX300   HP0-S42   ICBB   ICGB   ITILFND   JK0-022   JN0-102   JN0-360   LX0-103   LX0-104   M70-101   MB2-704   MB2-707   MB5-705   MB6-703   N10-006   NS0-157   NSE4   OG0-091   OG0-093   PEGACPBA71V1   PMP   PR000041   SSCP   SY0-401   VCP550   ICGB   CAP   JN0-102   70-486   1Z0-051   220-801   70-980   EX200   70-346   400-051   70-412   1Z0-144   70-480   300-075   EX300   1Z0-051   HP0-S42   MB5-705   70-411   PR000041   300-208   500-260   ICBB   70-410   70-483   000-017   350-029   350-080