Jarvis Parallax Theme – PageSpeed Score 60:40

Theme Created:  2013-08-14   Full Theme Description   DEMO

Jarvis is the perfect one page parallax WordPress theme for corporate, agency, nonprofit, freelancer or general business.With the advanced styling customization features, you can create endless possibilities by changing navigation styles, backgrounds for each section (header, sections, parallax, footer, etc..) with colors, images or patterns.
Jarvis allows to set a custom background for each section. Parallax sections makes your page more beautiful.

See on mobile

See Responsive Design Test Online  

W3C Validator

Validator performs the markup validation of HTML and XHTML documents and allows to evaluate the technical quality of web page code. It is important for browser compatibility and site usability.

Result of Home Page validation: 21 errors

Check it yorself

 

Performance evaluation via PageSpeed Insights on Desktop and Mobile Device

Analysis was done for the Home Page of theme demo. PageSpeed Insights fetches a site with a webkit renderer that emulates both mobile and desktop devices and takes into account characteristics of mobile networks.
The results returned by the PageSpeed Insights API includes the following information: PageSpeed score, summary statistics for the page and PageSpeed results for rules based on general principles of web page performance.

1. PageSpeed score

The PageSpeed Score (0-100) indicates how much faster a page could be. A high score indicates little room for improvement, while a low score indicates more room for improvement.
From the point of theme evaluating this characteristic shows how in the theme had taken into account the data processing, minification and optimal loading.

  Desktop PageSpeed Score

53 / 100

  Mobile PageSpeed Score

40 / 100

2. Page Statistic - Breakdown of page resources size

IMPORTANT! Sizes for HTML, text, CSS and JS resources in statistic are shown as for uncompressed ones.

Number and total size of all requests

Desktop Mobile
Total size of all requests (considering the compression of HTML, text, CSS and JS resources) 4669 KB 4903 KB
Number of requests 146 135

As we can see from graph and summary table:

  • The amount of downloaded data for desktop and mobile devices is virtually identical (the difference is not over 10%).
  • The page is too heavy - especially for mobile devices: mobile users may just close the site before the end of its loading.
  • The number of requests for mobile devices has decreased by 11. Good work!

 

3. PageSpeed results

PageSpeed analyzes web pages using rules based on main principles of web page performance and generates result for each rule. Following table shows results of the evaluation and recommendations for rules, which performance depends on the quality of the theme source code.

Rule Desktop Mobile
Avoid landing page redirects
Theme has no redirects.
Reduce server response time
In our test, server responded in 0.97 seconds. There are dozens of potential factors which may slow down the response of server: slow application logic, slow database queries, slow routing, frameworks, libraries, resource CPU starvation, or memory starvation.
Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Theme has 6 blocking script resources and 13 blocking CSS resources. This causes a delay in rendering Theme.
Optimize images
Properly formatting and compressing images can save many bytes of data.
Prioritize visible content
You have the above-the-fold content properly prioritized.
Description
   Fixing this would have a measurable impact on page performance.
    Fixing of this rule slightly helps to improve page performance.
  There is nothing to improve. Good job!
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