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nvlis.com screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    77% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

nvlis.com

www.nvlis.com-官网首页

Page Load Speed

5.1 sec in total

First Response

1 sec

Resources Loaded

3.6 sec

Page Rendered

494 ms

nvlis.com screenshot

About Website

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

nvlis.com

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Key Findings

We analyzed Nvlis.com page load time and found that the first response time was 1 sec and then it took 4.1 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

nvlis.com performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value3.3 s

69/100

25%

SI (Speed Index)

Value7.5 s

26/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0.447

20/100

15%

TTI (Time to Interactive)

Value3.5 s

92/100

10%

Network Requests Diagram

nvlis.com

1044 ms

jquery.js

1027 ms

style.css

1284 ms

stencil.css

1050 ms

2882802.js

710 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that 9% of them (1 request) were addressed to the original Nvlis.com, 73% (8 requests) were made to 4.cn and 9% (1 request) were made to Libs.baidu.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source 4.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 59.6 kB (28%)

Content Size

213.6 kB

After Optimization

153.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nvlis.com main page is 213.6 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. 15% of websites need less resources to load. Images take 108.2 kB which makes up the majority of the site volume.

HTML Optimization

-57%

Potential reduce by 2.9 kB

  • Original 5.0 kB
  • After minification 4.6 kB
  • After compression 2.2 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 2.9 kB or 57% of the original size.

Image Optimization

-10%

Potential reduce by 10.7 kB

  • Original 108.2 kB
  • After minification 97.5 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. Nvlis images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 40.3 kB

  • Original 81.5 kB
  • After minification 81.5 kB
  • After compression 41.2 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 40.3 kB or 49% of the original size.

CSS Optimization

-30%

Potential reduce by 5.7 kB

  • Original 18.8 kB
  • After minification 18.8 kB
  • After compression 13.0 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. Nvlis.com needs all CSS files to be minified and compressed as it can save up to 5.7 kB or 30% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

9

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nvlis. According to our analytics all requests are already optimized.

Network Requests Diagram

nvlis.com

nvlis.com

1044 ms

jquery.js

jquery.js

1027 ms

style.css

style.css

1284 ms

stencil.css

stencil.css

1050 ms

2882802.js

2882802.js

710 ms

a-pic.jpg

a-pic.jpg

503 ms

a-header-bg.jpg

a-header-bg.jpg

253 ms

a-banner.jpg

a-banner.jpg

1007 ms

icon.png

icon.png

505 ms

a-content-bg.jpg

a-content-bg.jpg

751 ms

a-pic.jpg

a-pic.jpg

999 ms

Accessibility Review

nvlis.com accessibility score

64

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

nvlis.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

SEO Factors

nvlis.com SEO score

92

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

nvlis.com

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