JavaScript page performance problems



In this episode of SEO Fairytales, Martin Splitt and Bartosz Góralewics, CEO at Onely, chat in-depth about solving a web performance issue of a brand-new website. Learn how he was able to uncover what problems JavaScript caused by experimenting and diving into the data of server logs.

Chapters
0:00 – Intro
0:49 – The dark ages of JavaScript SEO
2:50 – The traffic that never came
5:17 – The loading spinner of doom
7:52 – Into the rabbit hole
9:37 – Building experimental honey pots
11:24 – Exciting results
13:24 – Taking back the results to the client
15:23 – Pushing on
17:47 – Happily ever after…?
19:17 – Wrap up

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#SEO #JavaScript

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18 thoughts on “JavaScript page performance problems”

  1. Thanks for a great video. I really appreciate how the inidivdual steps were reviewed, including the creation of a honey pot. Makes a ton of sense. Must have been maddening, but seems like it all worked out 😉

  2. While this video rambled a bit – it was entertaining. I guess what the takeaway for me was, that while I'm dealing with a mysterious problem right now, that I guess is Javascript (Angular) related, this helped to see how other people struggle and take months to solve the problems as well. Please keep making them! Would like more specifics Martin!

  3. Question: Let's assume 2 identical ecommerce websites with hundreds of categories.
    When calling e.g. /category1 the webserver:
    for Website A -> response contains ALL the HTML content including the text content, menu links and links to the products.
    for Website B -> returns JUST header and footer HTML and JavaScript loads the text content, menu links and links to the products through an API call to a service.
    (we assume that response time and HTML content are identical)
    Which Website will perform better from an SEO perspective?
    Which approach is recommended?
    Which Website will be crawled / indexed faster?
    Which Website will come on top for the same keyword?

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