1 year optimising IG's websites

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Over the past year, the author has worked to optimize various websites for IG including igmarkets.co.uk, igindex.co.uk, and ig.com. Some of the key optimizations included reducing the size of images uploaded by content editors, eliminating unnecessary web fonts, concatenating JavaScript files, improving the management of third-party tags, migrating 17 sites to the new ig.com domain, and implementing an A/B testing framework. While progress has been made, further optimizations are still planned for the future to continue improving performance.

Technology Design

1 Year Optimising IG.com

1 Year Optimising IG.com | November | 1

QUICK INTRO
Dominic Penfold

Spare time...
www.woo4.me
@dom767

Work time...
Head of Public Sites
www.ig.com

1 Year Optimising IG.com | November | 2

ONE YEAR PERF GRAPH
Sneak peak

1 Year Optimising IG.com | November | 3

ABOUT THE SITE
igmarkets.co.uk; igindex.co.uk; ig.com

•
•
•
•
•
•
•
•

1 Year Optimising IG.com | November | 4

PERFORMANCE TESTING
APPROACH + STARTING
POINT

1 Year Optimising IG.com | November | 5

GENERAL APPROACH
Measure, analyse, fix, repeat

•
•
•
•
•
•
•
•

1 Year Optimising IG.com | November | 6

STARTING POINT
Already had a lot done
•
•
•
•
•
•
•
•
•
* - nearly
** - except core CMS files
1 Year Optimising IG.com | November | 7

OPTIMISING THE ORIGINAL
DESIGN (IGINDEX.CO.UK)

1 Year Optimising IG.com | November | 8

OVERSIZE IMAGES
Content editors…

1 Year Optimising IG.com | November | 9

OVERSIZE IMAGES
Content editors…

•
•
•
•
•
•

MADE THIS UP

1 Year Optimising IG.com | November | 10

JAVASCRIPT CONCATENATION
Core CMS files also need concatenating

1 Year Optimising IG.com | November | 13

JAVASCRIPT CONCATENATION
Core CMS files also need concatenating

•
•
•
•
•

1 Year Optimising IG.com | November | 14

3rd Party Tags
Targeting, retargeting, measuring, etc.

Forgot when this
was deployed!

1 Year Optimising IG.com | November | 15

3rd Party Tags
Targeting, retargeting, measuring, etc.

•
•
•
•
•

1 Year Optimising IG.com | November | 16

NEW DOMAIN AND 17 SITE
MIGRATIONS (IG.COM)

1 Year Optimising IG.com | November | 17

IG.COM
Effect on loadtime

Faster

1 Year Optimising IG.com | November | 20

doc.ready instead of onload
Stats change only

1 Year Optimising IG.com | November | 23

doc.ready instead of onload
Stats change only

•
•
•
•
•

1 Year Optimising IG.com | November | 24

Video
Configurable homepage

1 Year Optimising IG.com | November | 25

Video
Configurable homepage

•
•
•
•
•

1 Year Optimising IG.com | November | 26

A/B Testing framework
Different view per user

1 Year Optimising IG.com | November | 27

A/B Testing framework
Different view per user

•
•
•
•

1 Year Optimising IG.com | November | 28

PAGESPEED
We’re doing ok

1 Year Optimising IG.com | November | 29

DIDN’T MAKE IT
Experiments

•
•
•

1 Year Optimising IG.com | November | 30

FUTURE WORK
Still more…

•
•
•
•
•
•

1 Year Optimising IG.com | November | 31

QUESTIONS

1 Year Optimising IG.com | November | 32

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1 year optimising IG's websites

1. 1 Year Optimising IG.com 1 Year Optimising IG.com | November | 1

2. QUICK INTRO Dominic Penfold Spare time... www.woo4.me @dom767 Work time... Head of Public Sites www.ig.com 1 Year Optimising IG.com | November | 2

3. ONE YEAR PERF GRAPH Sneak peak 1 Year Optimising IG.com | November | 3

4. ABOUT THE SITE igmarkets.co.uk; igindex.co.uk; ig.com • • • • • • • • 1 Year Optimising IG.com | November | 4

5. PERFORMANCE TESTING APPROACH + STARTING POINT 1 Year Optimising IG.com | November | 5

6. GENERAL APPROACH Measure, analyse, fix, repeat • • • • • • • • 1 Year Optimising IG.com | November | 6

7. STARTING POINT Already had a lot done • • • • • • • • • * - nearly ** - except core CMS files 1 Year Optimising IG.com | November | 7

8. OPTIMISING THE ORIGINAL DESIGN (IGINDEX.CO.UK) 1 Year Optimising IG.com | November | 8

9. OVERSIZE IMAGES Content editors… 1 Year Optimising IG.com | November | 9

10. OVERSIZE IMAGES Content editors… • • • • • • MADE THIS UP 1 Year Optimising IG.com | November | 10

11. ELIMINATE WEBFONTS Brand guidelines 1 Year Optimising IG.com | November | 11

12. ELIMINATE WEBFONTS Brand guidelines • • • CANTARELL CANTARELL 1 Year Optimising IG.com | November | 12

13. JAVASCRIPT CONCATENATION Core CMS files also need concatenating 1 Year Optimising IG.com | November | 13

14. JAVASCRIPT CONCATENATION Core CMS files also need concatenating • • • • • 1 Year Optimising IG.com | November | 14

15. 3rd Party Tags Targeting, retargeting, measuring, etc. Forgot when this was deployed! 1 Year Optimising IG.com | November | 15

16. 3rd Party Tags Targeting, retargeting, measuring, etc. • • • • • 1 Year Optimising IG.com | November | 16

17. NEW DOMAIN AND 17 SITE MIGRATIONS (IG.COM) 1 Year Optimising IG.com | November | 17

18. IG.COM A global brand needs a global site 1 Year Optimising IG.com | November | 18

19. IG.COM A global brand needs a global site • • • • 1 Year Optimising IG.com | November | 19

20. IG.COM Effect on loadtime Faster 1 Year Optimising IG.com | November | 20

21. IG.COM Removed OOB Profile 1 Year Optimising IG.com | November | 21

22. IG.COM Removed OOB Profile • • • • 1 Year Optimising IG.com | November | 22

23. doc.ready instead of onload Stats change only 1 Year Optimising IG.com | November | 23

24. doc.ready instead of onload Stats change only • • • • • 1 Year Optimising IG.com | November | 24

25. Video Configurable homepage 1 Year Optimising IG.com | November | 25

26. Video Configurable homepage • • • • • 1 Year Optimising IG.com | November | 26

27. A/B Testing framework Different view per user 1 Year Optimising IG.com | November | 27

28. A/B Testing framework Different view per user • • • • 1 Year Optimising IG.com | November | 28

29. PAGESPEED We’re doing ok 1 Year Optimising IG.com | November | 29

30. DIDN’T MAKE IT Experiments • • • 1 Year Optimising IG.com | November | 30

31. FUTURE WORK Still more… • • • • • • 1 Year Optimising IG.com | November | 31

32. QUESTIONS 1 Year Optimising IG.com | November | 32

Editor's Notes

114 * sqrt(width * height)Punishes very large images (not linear on area), encourages proper designGives a thumb in the air measureNot sure it’s always valid, so not enforced by workflow

1 year optimising IG's websites

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Editor's Notes