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51zzl.com screenshot

Report Summary

  • 80

    Performance

    Renders faster than
    86% of other websites

  • 53

    Accessibility

    Visual factors better than
    that of 22% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

51zzl.com

51查询网--手机号码查询归属地 | IP地址查询 | 身份证号码归属地查询 | 地图查询

Page Load Speed

16.3 sec in total

First Response

1.5 sec

Resources Loaded

14.6 sec

Page Rendered

186 ms

51zzl.com screenshot

About Website

Click here to check amazing 51 Zzl content for China. Otherwise, check out these important facts you probably never knew about 51zzl.com

51查询网为您提供日常天气、交通出行、商业金融、教育学习等的常用查询功能，是广大网友上网必备的查询助手。

Visit 51zzl.com

Key Findings

We analyzed 51zzl.com page load time and found that the first response time was 1.5 sec and then it took 14.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

51zzl.com performance score

80

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

65/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.5 s

92/100

10%

Network Requests Diagram

51zzl.com

1477 ms

www.51zzl.com

9952 ms

LOGO.gif

4122 ms

bg_t.jpg

1367 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to 51zzl.com and no external sources were called. The less responsive or slowest element that took the longest time to load (10 sec) belongs to the original domain 51zzl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 16.0 kB (76%)

Content Size

21.1 kB

After Optimization

5.1 kB

  • HTML
  • Images

In fact, the total size of 51zzl.com main page is 21.1 kB. This result falls within a big category (top 100 000) of medium weight web pages. Only a small number of websites need less resources to load. HTML takes 20.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 16.0 kB

  • Original 20.7 kB
  • After minification 20.6 kB
  • After compression 4.6 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 16.0 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 447 B
  • After minification 447 B

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. 51 Zzl images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

  • Images

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Zzl. According to our analytics all requests are already optimized.

Network Requests Diagram

51zzl.com

51zzl.com

1477 ms

www.51zzl.com

www.51zzl.com

9952 ms

LOGO.gif

LOGO.gif

4122 ms

bg_t.jpg

bg_t.jpg

1367 ms

Accessibility Review

51zzl.com accessibility score

53

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

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

51zzl.com 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

51zzl.com SEO score

80

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

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 51zzl.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 51zzl.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

51zzl.com

Open Graph description is not detected on the main page of 51 Zzl. 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: