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GOV.UK enabled HTTP2 and were able to measure that this significantly improved performance. They found that, for users with slower devices and connections, start render improved by 2.5 seconds and page load time by 6 seconds.....

Matt Hobbs shares a straightforward, pragmatic walkthrough of how he set up the performance monitoring dashboards – including configuring test settings and creating performance budgets and alerts – for GOV.UK.....

We made a simple code change but the impact on the wider GOV.UK codebase was significant. We changed the way the `@font-face` loading method referenced fonts...