Tools & Wizards About Us

Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

centuri.net

CENTURI Inc - Arcade Games

Page Load Speed

4.1 sec in total

First Response

213 ms

Resources Loaded

1.8 sec

Page Rendered

2 sec

About Website

Visit centuri.net now to see the best up-to-date CENTURI content and also check out these interesting facts you probably never knew about centuri.net

Centuri Inc produced some of the best arcade games in the 1980's. This site is dedicated to all of those games, with photos, videos, sounds, manuals, pinouts, artwork, cabinet photos, marquees, contro...

Visit centuri.net

Key Findings

We analyzed Centuri.net page load time and found that the first response time was 213 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

centuri.net performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value23.2 s

0/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value1.023

2/100

15%

TTI (Time to Interactive)

Value16.8 s

5/100

10%

Network Requests Diagram

centuri.net

213 ms

css

46 ms

animate.min.css

112 ms

bootstrap.min.css

200 ms

bootstrap-icons.css

188 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 76% of them (69 requests) were addressed to the original Centuri.net, 20% (18 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Paypalobjects.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Centuri.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 55.2 kB (0%)

Content Size

14.9 MB

After Optimization

14.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Centuri.net main page is 14.9 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. Only a small number of websites need less resources to load. Images take 14.7 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 53.7 kB

  • Original 63.1 kB
  • After minification 48.9 kB
  • After compression 9.4 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 14.2 kB, which is 23% 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 53.7 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 165 B

  • Original 14.7 MB
  • After minification 14.7 MB

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. CENTURI images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 63 B

  • Original 88.5 kB
  • After minification 88.5 kB
  • After compression 88.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-2%

Potential reduce by 1.3 kB

  • Original 62.6 kB
  • After minification 62.6 kB
  • After compression 61.3 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. Centuri.net has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (19%)

Requests Now

69

After Optimization

56

  • Images
  • JavaScript
  • CSS

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CENTURI. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

centuri.net accessibility score

74

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 input fields do not have accessible names

High

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

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

<input type="image"> elements do not have [alt] text

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

centuri.net best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

centuri.net SEO score

92

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

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 Centuri.net 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 Centuri.net 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 description is not detected on the main page of CENTURI. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: