Report Summary

  • 0

    Performance

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

prevera.net

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Page Load Speed

21.8 sec in total

First Response

109 ms

Resources Loaded

21.2 sec

Page Rendered

533 ms

prevera.net screenshot

About Website

Click here to check amazing Prevera content. Otherwise, check out these important facts you probably never knew about prevera.net

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Visit prevera.net

Key Findings

We analyzed Prevera.net page load time and found that the first response time was 109 ms and then it took 21.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

prevera.net performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

prevera.net

109 ms

global.css

29 ms

browser-detect.js

58 ms

scripts.js

56 ms

jquery.min.js

29 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 46% of them (42 requests) were addressed to the original Prevera.net, 16% (15 requests) were made to Scontent-iad3-1.xx.fbcdn.net and 9% (8 requests) were made to Static.olark.com. The less responsive or slowest element that took the longest time to load (19.8 sec) relates to the external source Stats4.clicktracks.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 147.8 kB (11%)

Content Size

1.3 MB

After Optimization

1.1 MB

In fact, the total size of Prevera.net main page is 1.3 MB. 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 30.1 kB

  • Original 41.0 kB
  • After minification 36.4 kB
  • After compression 10.8 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 4.6 kB, which is 11% 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 30.1 kB or 74% of the original size.

Image Optimization

-4%

Potential reduce by 44.5 kB

  • Original 1.1 MB
  • After minification 1.0 MB

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. Prevera images are well optimized though.

JavaScript Optimization

-42%

Potential reduce by 51.4 kB

  • Original 121.4 kB
  • After minification 114.1 kB
  • After compression 70.1 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 51.4 kB or 42% of the original size.

CSS Optimization

-50%

Potential reduce by 21.8 kB

  • Original 43.7 kB
  • After minification 42.9 kB
  • After compression 22.0 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. Prevera.net needs all CSS files to be minified and compressed as it can save up to 21.8 kB or 50% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (35%)

Requests Now

85

After Optimization

55

The browser has sent 85 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Prevera. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

prevera.net accessibility score

68

Accessibility Issues

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

prevera.net best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

prevera.net SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Prevera.net can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Prevera.net 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 Prevera. 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: