Report Summary

  • 18

    Performance

    Renders faster than
    38% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    65% of websites

  • 84

    SEO

    Google-friendlier than
    60% of websites

Page Load Speed

1 sec in total

First Response

311 ms

Resources Loaded

625 ms

Page Rendered

84 ms

dereferer.org screenshot

About Website

Welcome to dereferer.org homepage info - get ready to check Dereferer best content for Mexico right away, or after learning these important things about dereferer.org

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Key Findings

We analyzed Dereferer.org page load time and found that the first response time was 311 ms and then it took 709 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

dereferer.org performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value11.8 s

0/100

25%

SI (Speed Index)

Value14.4 s

1/100

10%

TBT (Total Blocking Time)

Value9,070 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value16.4 s

5/100

10%

Network Requests Diagram

dereferer.org

311 ms

start.asp

110 ms

style.css

104 ms

dereferer-org-logo-grayback.gif

198 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Dereferer.org and no external sources were called. The less responsive or slowest element that took the longest time to load (311 ms) belongs to the original domain Dereferer.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 6.7 kB (71%)

Content Size

9.4 kB

After Optimization

2.7 kB

In fact, the total size of Dereferer.org main page is 9.4 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. CSS take 6.7 kB which makes up the majority of the site volume.

HTML Optimization

-61%

Potential reduce by 1.7 kB

  • Original 2.8 kB
  • After minification 2.6 kB
  • After compression 1.1 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 1.7 kB or 61% of the original size.

CSS Optimization

-75%

Potential reduce by 5.0 kB

  • Original 6.7 kB
  • After minification 4.2 kB
  • After compression 1.7 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. Dereferer.org needs all CSS files to be minified and compressed as it can save up to 5.0 kB or 75% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dereferer. According to our analytics all requests are already optimized.

Accessibility Review

dereferer.org accessibility score

96

Accessibility Issues

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

Best Practices

dereferer.org 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

SEO Factors

dereferer.org SEO score

84

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dereferer.org can be misinterpreted by Google and other search engines. Our service has detected that French 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 Dereferer.org main page’s claimed encoding is windows-1252. 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 Dereferer. 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: