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How we reduced CSS size and improved performance across GOV.UK

A laptop screen displays SpeedCurve metrics, featuring a graph that shows a decrease in CSS size from 42 kB to 25 kB after code changes to serve individual stylesheets

We recently reduced CSS size and improved performance across GOV.UK pages by
moving away from bundling all CSS into a single stylesheet served to all pages to serving smaller stylesheets containing only the necessary styles for each page.

Browser, operating system and screen resolution data for GOV.UK

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Browser, operating system and screen resolution data for GOV.UK

(Image courtesy of  Guy Moorhouse) Earlier this month I dug into the analytics data to better understand what devices people are using when visiting GOV.UK.  I thought I'd also quickly share headline data on what browsers, operating systems and screen resolutions …

When will more people visit GOV.UK using a mobile or tablet than a PC?

When will more people visit GOV.UK using a mobile or tablet than a PC?

Yesterday the BBC published data showing more people accessing iPlayer via tablet than via computer. This prompted me to update some of the data I gathered for the government's agreed approach to mobile last this time last year. The objective of the UK government's digital …