Tools & Wizards About Us

Report Summary

  • 0

    Performance

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

nikevision.com

Sports Sunglasses & Athletic Eyewear | Nike Vision

Page Load Speed

2.1 sec in total

First Response

146 ms

Resources Loaded

1.6 sec

Page Rendered

295 ms

About Website

Welcome to nikevision.com homepage info - get ready to check Nike Vision best content for Taiwan right away, or after learning these important things about nikevision.com

Shop sports sunglasses & athletic eyewear by Nike Vision. Our advanced frames & lenses are trusted by world-class athletes for performance & durability.

Visit nikevision.com

Key Findings

We analyzed Nikevision.com page load time and found that the first response time was 146 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

nikevision.com performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

70/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value1,920 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.1 s

33/100

10%

Network Requests Diagram

nikevision.com

146 ms

www.nikevision.com

390 ms

normalize.css

119 ms

shadowbox.css

130 ms

font-awesome.min.css

190 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 64% of them (42 requests) were addressed to the original Nikevision.com, 6% (4 requests) were made to Platform.twitter.com and 5% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (548 ms) relates to the external source Static.xx.fbcdn.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 247.0 kB (41%)

Content Size

600.3 kB

After Optimization

353.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nikevision.com main page is 600.3 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Images take 272.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 29.1 kB

  • Original 37.7 kB
  • After minification 35.0 kB
  • After compression 8.7 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 29.1 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 9.8 kB

  • Original 272.0 kB
  • After minification 262.2 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. Nike Vision images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 114.2 kB

  • Original 176.4 kB
  • After minification 140.0 kB
  • After compression 62.2 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 114.2 kB or 65% of the original size.

CSS Optimization

-82%

Potential reduce by 94.0 kB

  • Original 114.2 kB
  • After minification 89.9 kB
  • After compression 20.2 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nikevision.com needs all CSS files to be minified and compressed as it can save up to 94.0 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (67%)

Requests Now

58

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nike Vision. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

nikevision.com accessibility score

77

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-*] attributes do not match their roles

High

[role]s are not contained by their required parent element

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

nikevision.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

nikevision.com SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nikevision.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nikevision.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 Vision. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: