Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

nikebetterworld.com

Nike Sustainability. Move to Zero. Nike.com

Page Load Speed

3.1 sec in total

First Response

66 ms

Resources Loaded

2.4 sec

Page Rendered

637 ms

nikebetterworld.com screenshot

About Website

Click here to check amazing Nike Betterworld content. Otherwise, check out these important facts you probably never knew about nikebetterworld.com

We’re committed to a better tomorrow for all athletes. Move to Zero is our journey toward zero carbon and waste to help protect the future of sport.

Visit nikebetterworld.com

Key Findings

We analyzed Nikebetterworld.com page load time and found that the first response time was 66 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

nikebetterworld.com performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

33/100

25%

SI (Speed Index)

Value8.4 s

19/100

10%

TBT (Total Blocking Time)

Value2,910 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value22.2 s

1/100

10%

Network Requests Diagram

nikebetterworld.com

66 ms

33 ms

195 ms

style.css

12 ms

style.css

25 ms

Our browser made a total of 118 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Nikebetterworld.com, 32% (38 requests) were made to 216a497680152ed22e52-01d6a426a21216ea0f0f91a356c3fa59.ssl.cf2.rackcdn.com and 16% (19 requests) were made to Content.nike.com. The less responsive or slowest element that took the longest time to load (653 ms) relates to the external source Content.nike.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (60%)

Content Size

2.0 MB

After Optimization

782.9 kB

In fact, the total size of Nikebetterworld.com main page is 2.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 220.7 kB

  • Original 252.0 kB
  • After minification 182.5 kB
  • After compression 31.3 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 69.5 kB, which is 28% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 220.7 kB or 88% of the original size.

Image Optimization

-27%

Potential reduce by 194.3 kB

  • Original 709.1 kB
  • After minification 514.7 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Nike Betterworld needs image optimization as it can save up to 194.3 kB or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-77%

Potential reduce by 773.3 kB

  • Original 1.0 MB
  • After minification 909.1 kB
  • After compression 236.8 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 773.3 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 56 (53%)

Requests Now

106

After Optimization

50

The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nike Betterworld. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

nikebetterworld.com accessibility score

81

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

nikebetterworld.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

nikebetterworld.com SEO score

86

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nikebetterworld.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Nikebetterworld.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

Open Graph data is detected on the main page of Nike Betterworld. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: