Tools & Wizards About Us

Report Summary

  • 38

    Performance

    Renders faster than
    58% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

explicatorium.com

Explicatorium - Ciência Online: Física, Química e muito mais

Page Load Speed

2.6 sec in total

First Response

359 ms

Resources Loaded

2.1 sec

Page Rendered

142 ms

About Website

Visit explicatorium.com now to see the best up-to-date Explicatorium content for Angola and also check out these interesting facts you probably never knew about explicatorium.com

Explicatorium é sua sala de aula online para estudar física, química e ciências naturais. Obtenha resumos, testes, exercícios, biografias e relatórios para melhorar seus conhecimentos.

Visit explicatorium.com

Key Findings

We analyzed Explicatorium.com page load time and found that the first response time was 359 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

explicatorium.com performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value2,170 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.8 s

13/100

10%

Network Requests Diagram

explicatorium.com

359 ms

index.html

597 ms

styles.css

256 ms

bootstrap.css

342 ms

jsapi

17 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 40% of them (21 requests) were addressed to the original Explicatorium.com, 27% (14 requests) were made to Google.com and 10% (5 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (784 ms) belongs to the original domain Explicatorium.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 262.1 kB (37%)

Content Size

701.2 kB

After Optimization

439.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Explicatorium.com main page is 701.2 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. 55% of websites need less resources to load. Images take 309.2 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 13.3 kB

  • Original 17.6 kB
  • After minification 16.0 kB
  • After compression 4.3 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 13.3 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 1.6 kB

  • Original 309.2 kB
  • After minification 307.6 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. Explicatorium images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 121.8 kB

  • Original 228.7 kB
  • After minification 204.8 kB
  • After compression 106.9 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 121.8 kB or 53% of the original size.

CSS Optimization

-86%

Potential reduce by 125.4 kB

  • Original 145.8 kB
  • After minification 120.9 kB
  • After compression 20.4 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. Explicatorium.com needs all CSS files to be minified and compressed as it can save up to 125.4 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 21 (45%)

Requests Now

47

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Explicatorium. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

explicatorium.com accessibility score

77

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-*] attributes do not match their roles

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

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

High

Form elements do not have associated labels

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

explicatorium.com best practices score

67

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

Browser errors were logged to the console

SEO Factors

explicatorium.com 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 Explicatorium.com 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 Explicatorium.com 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 Explicatorium. 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: