Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    65% of websites

  • 100

    SEO

    Google-friendlier than
    96% of websites

pt.webqc.org

Portal da Química - Chemistry Online Education

Page Load Speed

392 ms in total

First Response

93 ms

Resources Loaded

299 ms

Page Rendered

0 ms

pt.webqc.org screenshot

About Website

Click here to check amazing Pt Webqc content for United States. Otherwise, check out these important facts you probably never knew about pt.webqc.org

Chemical portal: a place for chemistry enthusiasts and professionals alike. Chemistry tools, periodic table, unit converters and more.

Visit pt.webqc.org

Key Findings

We analyzed Pt.webqc.org page load time and found that the first response time was 93 ms and then it took 299 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

pt.webqc.org performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value1.2 s

100/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.078

95/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

pt.webqc.org

93 ms

webqc.css

61 ms

addthis_widget.js

13 ms

common.js

72 ms

webqclogo2.png

71 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that 57% of them (8 requests) were addressed to the original Pt.webqc.org, 36% (5 requests) were made to S7.addthis.com and 7% (1 request) were made to M.addthis.com. The less responsive or slowest element that took the longest time to load (202 ms) belongs to the original domain Pt.webqc.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 515.0 kB (61%)

Content Size

842.7 kB

After Optimization

327.7 kB

In fact, the total size of Pt.webqc.org main page is 842.7 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. 25% of websites need less resources to load. Javascripts take 607.6 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 94.6 kB

  • Original 124.1 kB
  • After minification 124.0 kB
  • After compression 29.5 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 94.6 kB or 76% of the original size.

Image Optimization

-2%

Potential reduce by 1.6 kB

  • Original 104.9 kB
  • After minification 103.3 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. Pt Webqc images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 414.0 kB

  • Original 607.6 kB
  • After minification 606.6 kB
  • After compression 193.6 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 414.0 kB or 68% of the original size.

CSS Optimization

-78%

Potential reduce by 4.7 kB

  • Original 6.0 kB
  • After minification 4.4 kB
  • After compression 1.3 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. Pt.webqc.org needs all CSS files to be minified and compressed as it can save up to 4.7 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (42%)

Requests Now

12

After Optimization

7

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pt Webqc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

pt.webqc.org accessibility score

94

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.

Best Practices

pt.webqc.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

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

pt.webqc.org 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 Pt.webqc.org 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 Pt.webqc.org 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 Pt Webqc. 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: