The document discusses techniques to improve website loading speeds, highlighting the importance of fast load times for user retention and engagement. It emphasizes strategies like lazy loading of images and videos, proper URL formatting, image compression, and efficient HTTP header management. The data provided indicates that shorter loading times can significantly increase pageviews and session duration.

1. Theo van der Zee - MonitorMore @ WordCamp Utrecht, 2017
Uncommon Ways to
Speed up your Website

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4. Slow cheetahs die,
Slow websites too.

7. Source: Ericsson

8. Mobile loading time
Source: Google
1 out of 2
people expect
load times < 2
seconds

9. 53% abandons after 3 sec
Mobile loading times
Source: Google

10. 53% abandons after 3 sec
Avg. 3G load time is 19 sec
Mobile loading times
Source: Google

11. Loading time of 5 sec vs. 19 sec
60% greater
pageviews per
visit
70% longer
average
sessions
Source: Google

12. Source: Google

13. Source: Soasta

17. 43
2
1
5
6

18. Use lazy loading

28. No images and videos
Images and videos added
With lazy loading

29. 43
2
1
5
6

30. Handle trailing slashes

31. Do use on folders

32. monitormore.com/pricing/

33. Don’t use on files

34. monitormore.com/blog/article.html/

35. Use them consistently

38. Source: PropellerNet
“It looks like Google – for the most part – does treat
URLs like /page and /page/ as if they were unique,
at least as far as crawling them goes.”

39. Source: PropellerNet
“Bing, however, when presented with those options,
will only crawl one.”

40. Source: Google
“Google treats each URL above separately (and
equally) regardless of whether it’s a file or a
directory, or it contains a trailing slash or it doesn’t
contain a trailing slash.”

42. /blog /blog/
301 redirect

43. 43
2
1
5
6

44. Remove, resize and
compress images

45. Amount of images vs. Page load time

53. 43
2
1
5
6

54. Stop loading too many
web fonts

70. 43
2
1
5
6

71. Properly set the
HTTP headers

72. Enter the matrix

73. Request or response

76. Cache validator:
Etag or Last-modified

77. Browser caching:
ETag or Last-modified

79. Chrome > Developer
Tools > Network

80. 43
2
1
5
6

81. Fetch less content from
external domains

82. When websites look like
solar systems…

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