What effect do third party assets have on your website's frontend performance?

Editor's Notes

1. About me
2. Is something sexy, fast, desirable and gets customers to spend lots of time (and money, if that’s your thing).
3. Time, resource and financial constraints generally mean that you do the best you can with what you’ve got, Something modern, reliable, attractive and functional.
4. Then marketing and online teams come and ruin it by demanding changes. Often it is to generate, measure or protect revenue.
5. Take one of the biggest websites in the UK, M&S.com. Ignoring the fact that they have a 6 second render start time… There’s almost 22s of 100% CPU time. From: London, UK - Chrome - Cable
6. Take one of the biggest websites in the UK, M&S.com. Ignoring the fact that they have a 6 second render start time… It’s easy to assume that the slow load is due to the large number of objects and There’s almost 22s of 100% CPU time. From: London, UK - Chrome - Cable
7. Are you responsive / going responsive? How do you manage third parties there? Android especially
8. Visual progress chart of an alexa top 100 site with and without a third party being blocked. What if your customers are behind a proxy which blocks the third party or in a country which doesn’t allow it?
9. The browser sits there and waits. What about this particular third party asset…
10. Y-axis is the mean of when nexus was loaded in ms, X-axis is the mean duration spent downloading nexus assets in ms Bubble size is Speed index of the whole page. Taken from about 100 website
11. We know that it can affect performance in resource-constrained devices. But it also causes frustration, who does the customer blame when they see this.
12. doubled in the last four years
13. What are they, Why are they there, Who put them there?
14. Back to these guys. How do you manage what they put on the site Have a change request for each new tag? Let them inject their own?
15. TAG MANAGERS According to Forrester’s “Understanding Tag Management Tools and Technology”: 36% of companies listed page load performance as a top challenge 32% listed the technical skills required to manage tags as a challenge 28% of users said that that one of their top three benefits of a tag management system is improved flexibility to evaluate and adopt new vendors The top two things companies look for in a TMS is ease of use (62%) and ease of implementation and ongoing management (50%)
16. TAG MANAGERS According to Forrester’s “Understanding Tag Management Tools and Technology”: 36% of companies listed page load performance as a top challenge 32% listed the technical skills required to manage tags as a challenge 28% of users said that that one of their top three benefits of a tag management system is improved flexibility to evaluate and adopt new vendors The top two things companies look for in a TMS is ease of use (62%) and ease of implementation and ongoing management (50%)
17. TAG MANAGERS According to Forrester’s “Understanding Tag Management Tools and Technology”: 36% of companies listed page load performance as a top challenge 32% listed the technical skills required to manage tags as a challenge 28% of users said that that one of their top three benefits of a tag management system is improved flexibility to evaluate and adopt new vendors The top two things companies look for in a TMS is ease of use (62%) and ease of implementation and ongoing management (50%)
18. Render start time by presence of tag managers
19. # objects in the page by presence of tag managers
20. onload event from public WPT, private WPT and PA. All London
21. onload event from public WPT, private WPT and PA. All London