Tools & Wizards About Us
cert.br screenshot

Report Summary

  • 95

    Performance

    Renders faster than
    93% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

cert.br

CERT.br - Centro de Estudos, Resposta e Tratamento de Incidentes de Segurança no Brasil

Page Load Speed

3.2 sec in total

First Response

515 ms

Resources Loaded

2.5 sec

Page Rendered

140 ms

cert.br screenshot

About Website

Welcome to cert.br homepage info - get ready to check CERT best content for Brazil right away, or after learning these important things about cert.br

Página Principal do CERT.br

Visit cert.br

Key Findings

We analyzed Cert.br page load time and found that the first response time was 515 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cert.br performance score

95

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.5 s

96/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value2.3 s

98/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value1.5 s

100/100

10%

Network Requests Diagram

cert.br

515 ms

cert.br

577 ms

certbr.css

140 ms

home.css

279 ms

logo-cert.png

383 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that all of those requests were addressed to Cert.br and no external sources were called. The less responsive or slowest element that took the longest time to load (858 ms) belongs to the original domain Cert.br.

Page Optimization Overview & Recommendations

Page size can be reduced by 28.1 kB (10%)

Content Size

268.5 kB

After Optimization

240.5 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Cert.br main page is 268.5 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. 20% of websites need less resources to load. Images take 239.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 12.1 kB

  • Original 16.1 kB
  • After minification 12.8 kB
  • After compression 4.0 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 3.3 kB, which is 20% 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 12.1 kB or 75% of the original size.

Image Optimization

-3%

Potential reduce by 6.5 kB

  • Original 239.9 kB
  • After minification 233.4 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. CERT images are well optimized though.

CSS Optimization

-75%

Potential reduce by 9.5 kB

  • Original 12.6 kB
  • After minification 10.5 kB
  • After compression 3.1 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. Cert.br needs all CSS files to be minified and compressed as it can save up to 9.5 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (41%)

Requests Now

37

After Optimization

22

  • Images
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CERT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cert.br

cert.br

515 ms

cert.br

cert.br

577 ms

certbr.css

certbr.css

140 ms

home.css

home.css

279 ms

logo-cert.png

logo-cert.png

383 ms

busca-btn.png

busca-btn.png

383 ms

btn-valid-xhtml.png

btn-valid-xhtml.png

384 ms

btn-valid-css.png

btn-valid-css.png

397 ms

icon-tabuleiro.png

icon-tabuleiro.png

552 ms

20-years.jpg

20-years.jpg

720 ms

video-trat-incidentes.jpg

video-trat-incidentes.jpg

509 ms

targ-logo-small.png

targ-logo-small.png

510 ms

banner-ransomware.jpg

banner-ransomware.jpg

510 ms

banner-internetsegura-w.png

banner-internetsegura-w.png

529 ms

ico-cidadao.jpg

ico-cidadao.jpg

635 ms

banner-registrobr.jpg

banner-registrobr.jpg

762 ms

logo-ipv6.png

logo-ipv6.png

636 ms

logo-ntpbr.png

logo-ntpbr.png

662 ms

logo-seipartner.png

logo-seipartner.png

691 ms

logo-first.png

logo-first.png

762 ms

logo-ti-accredited.png

logo-ti-accredited.png

762 ms

logo-apwg.png

logo-apwg.png

794 ms

logo-cgi.png

logo-cgi.png

829 ms

logo-nic.png

logo-nic.png

858 ms

background-left.png

background-left.png

606 ms

background-top.png

background-top.png

607 ms

top-corner-left.png

top-corner-left.png

608 ms

background-secondary-top.png

background-secondary-top.png

644 ms

top-corner-right.png

top-corner-right.png

684 ms

ico-menuleft.png

ico-menuleft.png

714 ms

ico-twitter-m.png

ico-twitter-m.png

732 ms

ico-rss-m.png

ico-rss-m.png

732 ms

destaques-fundo.png

destaques-fundo.png

734 ms

background-box.png

background-box.png

777 ms

ico-destaques.png

ico-destaques.png

822 ms

background-box-direita.png

background-box-direita.png

852 ms

blank.png

blank.png

857 ms

print.css

print.css

139 ms

handheld.css

handheld.css

139 ms

Accessibility Review

cert.br accessibility score

100

Accessibility Issues

Best Practices

cert.br best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

cert.br SEO score

69

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    PT

  • Language Claimed

    PT

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cert.br can be misinterpreted by Google and other search engines. Our service has detected that Portuguese is used on the page, and it matches the claimed language. Our system also found out that Cert.br 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

cert.br

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