Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

blackfriday.com.br

Black Friday 2024 | Ofertas até 80% Off - Site Oficial

Page Load Speed

4.9 sec in total

First Response

487 ms

Resources Loaded

4.3 sec

Page Rendered

126 ms

blackfriday.com.br screenshot

About Website

Visit blackfriday.com.br now to see the best up-to-date Black Friday content for Brazil and also check out these interesting facts you probably never knew about blackfriday.com.br

Site Oficial da Black Friday 2024 - Ofertas e Promoções Exclusivas de até 80% de Desconto na Maior Black Friday do Brasil que acontece no dia 29 de Novembro.

Visit blackfriday.com.br

Key Findings

We analyzed Blackfriday.com.br page load time and found that the first response time was 487 ms and then it took 4.4 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

blackfriday.com.br performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.365

29/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

blackfriday.com.br

487 ms

www.blackfriday.com.br

1041 ms

font-awesome.min.css

419 ms

blog_blackfriday-20151203_153702.css

836 ms

blog_blackfriday-20151124_153225.js

702 ms

Our browser made a total of 114 requests to load all elements on the main page. We found that 56% of them (64 requests) were addressed to the original Blackfriday.com.br, 19% (22 requests) were made to Static.xx.fbcdn.net and 9% (10 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Blackfriday.com.br.

Page Optimization Overview & Recommendations

Page size can be reduced by 384.0 kB (39%)

Content Size

972.6 kB

After Optimization

588.7 kB

In fact, the total size of Blackfriday.com.br main page is 972.6 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. 60% of websites need less resources to load. Images take 467.6 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 46.4 kB

  • Original 58.0 kB
  • After minification 53.2 kB
  • After compression 11.6 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 46.4 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 16.8 kB

  • Original 467.6 kB
  • After minification 450.8 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. Black Friday images are well optimized though.

JavaScript Optimization

-63%

Potential reduce by 158.3 kB

  • Original 249.7 kB
  • After minification 249.7 kB
  • After compression 91.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 158.3 kB or 63% of the original size.

CSS Optimization

-82%

Potential reduce by 162.4 kB

  • Original 197.3 kB
  • After minification 197.1 kB
  • After compression 34.9 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. Blackfriday.com.br needs all CSS files to be minified and compressed as it can save up to 162.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (26%)

Requests Now

107

After Optimization

79

The browser has sent 107 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Black Friday. 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 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

blackfriday.com.br accessibility score

87

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.

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

blackfriday.com.br best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

blackfriday.com.br SEO score

100

Search Engine Optimization Advices

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

    PT

  • Language Claimed

    PT

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Blackfriday.com.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 Blackfriday.com.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

Open Graph data is detected on the main page of Black Friday. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: