Report Summary

  • 75

    Performance

    Renders faster than
    83% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

Page Load Speed

39 ms in total

First Response

19 ms

Resources Loaded

20 ms

Page Rendered

0 ms

21cm.global screenshot

About Website

Welcome to 21cm.global homepage info - get ready to check 21 Cm best content right away, or after learning these important things about 21cm.global

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Key Findings

We analyzed 21cm.global page load time and found that the first response time was 19 ms and then it took 20 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

21cm.global performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

31/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value150 ms

95/100

30%

CLS (Cumulative Layout Shift)

Value0.086

93/100

15%

TTI (Time to Interactive)

Value4.7 s

80/100

10%

Network Requests Diagram

21cm.global

19 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to 21cm.global and no external sources were called. The less responsive or slowest element that took the longest time to load (19 ms) belongs to the original domain 21cm.global.

Page Optimization Overview & Recommendations

Page size can be reduced by 464.8 kB (67%)

Content Size

694.6 kB

After Optimization

229.9 kB

In fact, the total size of 21cm.global main page is 694.6 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Javascripts take 694.3 kB which makes up the majority of the site volume.

HTML Optimization

-18%

Potential reduce by 23 B

  • Original 127 B
  • After minification 127 B
  • After compression 104 B

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 23 B or 18% of the original size.

JavaScript Optimization

-67%

Potential reduce by 464.7 kB

  • Original 694.3 kB
  • After minification 694.3 kB
  • After compression 229.7 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 464.7 kB or 67% of the original size.

CSS Optimization

-31%

Potential reduce by 61 B

  • Original 198 B
  • After minification 153 B
  • After compression 137 B

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. 21cm.global needs all CSS files to be minified and compressed as it can save up to 61 B or 31% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Review

21cm.global accessibility score

86

Accessibility Issues

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

Document doesn't have a <title> element

High

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

Best Practices

21cm.global 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

21cm.global SEO score

75

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

Document doesn't have a <title> element

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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

    N/A

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 21cm.global can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that 21cm.global main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of 21 Cm. 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: