WebPageTest exposes all its data via an easy to access API, but the data listed can be overwhelming. Using a tool like jq can help. Here's how you use it.
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Feed dedicated to the random web developerment thoughts of Frontend developer, Matt Hobbs. Posts 99% related to either frontend development or web performance.
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Your may not think it, but your 404 page is an important part of your potential user journey. You should test its web performance as it can have a big impact on your users experience.
Weird things can happen to waterfalls when you don't set the correct response headers.
TLS 1.3 is the new kid on the cryptographic protocols block. It offers better security and better initial connection web performance. And IPv6 is a 'new' internet protocol. Lets examine some shiny new things!
A simple blog post bringing all the resources I used and created in the GOV.UK HTTP/2 work.
Custom dashboards and graphs are a really powerful feature of SpeedCurve. Here's a few examples of how we at GDS are using them for synthetic web performance monitoring.