Tools & Wizards About Us
vkcomm.com screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 36

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

vkcomm.com

PD电源适配器,两轮电动车快充,电动汽车快充-深圳市恒玺科技有限公司

Page Load Speed

1.3 sec in total

First Response

59 ms

Resources Loaded

842 ms

Page Rendered

435 ms

vkcomm.com screenshot

About Website

Click here to check amazing Vkcomm content. Otherwise, check out these important facts you probably never knew about vkcomm.com

深圳市恒玺科技有限公司，恒玺科技成立于2012年,注册资金1000万人民币。从公司自网络方案提供商，发展成为以设计、研发、制造、销售高端电源，新能源技术、智能控制系统为主的科技型公司、经过多年的技术经验储备，拥有一支实力雄厚的研产销团队，形成完备的技术和产品体系，获得了大量核心技术与知识产权，为国内外客户快速提供领先的智能电源控制器及系统智能化觖决方案， 在PD快充、智能电器、电动工具、两轮车、特...

Visit vkcomm.com

Key Findings

We analyzed Vkcomm.com page load time and found that the first response time was 59 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

vkcomm.com performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

74/100

10%

LCP (Largest Contentful Paint)

Value12.2 s

0/100

25%

SI (Speed Index)

Value7.4 s

27/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.487

17/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

vkcomm.com

59 ms

domain_profile.cfm

356 ms

common.css

61 ms

v3.css

76 ms

pages_v3b.css

72 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Vkcomm.com, 80% (36 requests) were made to Static.hugedomains.com and 9% (4 requests) were made to Hugedomains.com. The less responsive or slowest element that took the longest time to load (356 ms) relates to the external source Hugedomains.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 171.3 kB (36%)

Content Size

474.6 kB

After Optimization

303.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vkcomm.com main page is 474.6 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. 30% of websites need less resources to load. Images take 207.8 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 11.4 kB

  • Original 16.8 kB
  • After minification 16.6 kB
  • After compression 5.4 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 11.4 kB or 68% of the original size.

Image Optimization

-2%

Potential reduce by 4.2 kB

  • Original 207.8 kB
  • After minification 203.6 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. Vkcomm images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 64.0 kB

  • Original 127.5 kB
  • After minification 127.5 kB
  • After compression 63.6 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 64.0 kB or 50% of the original size.

CSS Optimization

-75%

Potential reduce by 91.7 kB

  • Original 122.5 kB
  • After minification 120.7 kB
  • After compression 30.8 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. Vkcomm.com needs all CSS files to be minified and compressed as it can save up to 91.7 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (56%)

Requests Now

43

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vkcomm. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

vkcomm.com

vkcomm.com

59 ms

domain_profile.cfm

domain_profile.cfm

356 ms

common.css

common.css

61 ms

v3.css

v3.css

76 ms

pages_v3b.css

pages_v3b.css

72 ms

styles_hd.css

styles_hd.css

67 ms

common.js

common.js

73 ms

common_v3.js

common_v3.js

75 ms

jquery-1.5.1.min.js

jquery-1.5.1.min.js

80 ms

styles-new.css

styles-new.css

78 ms

edition121114.css

edition121114.css

78 ms

ga.js

ga.js

33 ms

counter.js

counter.js

77 ms

profileVideo.cfm

profileVideo.cfm

217 ms

bg.gif

bg.gif

13 ms

bg2.jpg

bg2.jpg

13 ms

logo_huge_domains.gif

logo_huge_domains.gif

13 ms

menu_row_r.gif

menu_row_r.gif

62 ms

cart_top.gif

cart_top.gif

57 ms

menu_top_bg.gif

menu_top_bg.gif

12 ms

menu_top_a_bg.gif

menu_top_a_bg.gif

56 ms

menu_top_a_left.gif

menu_top_a_left.gif

60 ms

menu_top_a_right.gif

menu_top_a_right.gif

60 ms

top_69.jpg

top_69.jpg

57 ms

f_search.gif

f_search.gif

67 ms

b_search_2.gif

b_search_2.gif

60 ms

youtubeLocationMatters.jpg

youtubeLocationMatters.jpg

59 ms

hr_882x7.png

hr_882x7.png

66 ms

crown.jpg

crown.jpg

66 ms

stars_5.png

stars_5.png

66 ms

b_buyNow_187.png

b_buyNow_187.png

67 ms

i_phone_blue.png

i_phone_blue.png

66 ms

i_i_blue.png

i_i_blue.png

72 ms

dots_8x1.gif

dots_8x1.gif

69 ms

footer_logo_cc.png

footer_logo_cc.png

67 ms

footer_logo_guaranteed.png

footer_logo_guaranteed.png

110 ms

footer_logo_escrow.png

footer_logo_escrow.png

69 ms

footer_logo_GT.png

footer_logo_GT.png

67 ms

chat-popup-close.png

chat-popup-close.png

84 ms

chat-popup-start.png

chat-popup-start.png

85 ms

__utm.gif

__utm.gif

36 ms

t.php

t.php

150 ms

chat-popup.png

chat-popup.png

230 ms

bodyImage.cfm

bodyImage.cfm

180 ms

stat.aspx

stat.aspx

57 ms

Accessibility Review

vkcomm.com accessibility score

36

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

vkcomm.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

vkcomm.com SEO score

92

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vkcomm.com 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 Vkcomm.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

vkcomm.com

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