Tools & Wizards About Us

Report Summary

  • 70

    Performance

    Renders faster than
    81% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

zzhero.com

磁选机_磁铁矿设备_赤铁矿设备_褐铁矿设备-郑州山川重工磁选设备网

Page Load Speed

25.8 sec in total

First Response

2.1 sec

Resources Loaded

23.3 sec

Page Rendered

447 ms

About Website

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

中国磁选机研发与试验基地，国内外磁选机采用山川技术-磁选机,磁铁矿设备,赤铁矿设备,褐铁矿设备,干式磁选机,湿式磁选机,河沙选铁,海砂选铁专业的磁选设备生产厂家-为需要磁选设备用户提供免费咨询，免费设计，免费实验等服务。联系电话：13938439388

Visit zzhero.com

Key Findings

We analyzed Zzhero.com page load time and found that the first response time was 2.1 sec and then it took 23.7 sec 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. Unfortunately, there were 14 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

zzhero.com performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.5 s

99/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value600 ms

49/100

30%

CLS (Cumulative Layout Shift)

Value0.049

99/100

15%

TTI (Time to Interactive)

Value10.3 s

24/100

10%

Network Requests Diagram

zzhero.com

2080 ms

style.css

950 ms

qiehuan.js

1070 ms

logo.jpg

7855 ms

nav_line.jpg

2618 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that 85% of them (39 requests) were addressed to the original Zzhero.com, 11% (5 requests) were made to Net.zoosnet.net and 2% (1 request) were made to Js.users.51.la. The less responsive or slowest element that took the longest time to load (19.9 sec) belongs to the original domain Zzhero.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 21.6 kB (34%)

Content Size

64.1 kB

After Optimization

42.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Zzhero.com main page is 64.1 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 36.2 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 16.8 kB

  • Original 22.2 kB
  • After minification 20.6 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 16.8 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 970 B

  • Original 36.2 kB
  • After minification 35.2 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. Zzhero images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 3.8 kB

  • Original 5.7 kB
  • After minification 5.1 kB
  • After compression 1.9 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 3.8 kB or 67% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (13%)

Requests Now

31

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zzhero. 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 as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

zzhero.com accessibility score

76

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.

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

Links do not have a discernible name

High

<object> elements do not have alternate text

Best Practices

zzhero.com best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zzhero.com SEO score

54

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

Content Best Practices

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

Impact

Issue

High

Document uses plugins

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zzhero.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 Zzhero.com main page’s claimed encoding is gb2312. 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

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