Tools & Wizards About Us
51hanghai.com screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

51hanghai.com

我要航海网-第一帆船游艇门户 - Powered by Discuz!

Page Load Speed

12.8 sec in total

First Response

627 ms

Resources Loaded

10.4 sec

Page Rendered

1.8 sec

51hanghai.com screenshot

About Website

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

专业的航海运动服务平台，全面的帆船游艇资料库和航海知识分享，有帆船设计、游艇制造等教程，是一个有着全面游艇交易、帆船比赛、帆船图片、航海电影等内容的综合门户，大海在召唤自由的灵魂，我们在期待您的加入！

Visit 51hanghai.com

Key Findings

We analyzed 51hanghai.com page load time and found that the first response time was 627 ms and then it took 12.2 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

51hanghai.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

19/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value5,850 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.125

83/100

15%

TTI (Time to Interactive)

Value18.2 s

3/100

10%

Network Requests Diagram

51hanghai.com

627 ms

www.51hanghai.com

1359 ms

style_8_common.css

227 ms

common.js

422 ms

jquery.min.js

764 ms

Our browser made a total of 140 requests to load all elements on the main page. We found that 55% of them (77 requests) were addressed to the original 51hanghai.com, 40% (56 requests) were made to Images.51hanghai.com and 2% (3 requests) were made to Static.meiqia.com. The less responsive or slowest element that took the longest time to load (4.9 sec) relates to the external source Images.51hanghai.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 371.1 kB (7%)

Content Size

5.2 MB

After Optimization

4.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 51hanghai.com main page is 5.2 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. 55% of websites need less resources to load. Images take 4.2 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 165.1 kB

  • Original 191.7 kB
  • After minification 181.2 kB
  • After compression 26.7 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 165.1 kB or 86% of the original size.

Image Optimization

-2%

Potential reduce by 95.6 kB

  • Original 4.2 MB
  • After minification 4.1 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. 51 Hanghai images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 90.3 kB

  • Original 681.1 kB
  • After minification 680.9 kB
  • After compression 590.8 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 90.3 kB or 13% of the original size.

CSS Optimization

-19%

Potential reduce by 20.1 kB

  • Original 105.5 kB
  • After minification 105.5 kB
  • After compression 85.5 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. 51hanghai.com needs all CSS files to be minified and compressed as it can save up to 20.1 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (30%)

Requests Now

137

After Optimization

96

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 137 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Hanghai. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

51hanghai.com

51hanghai.com

627 ms

www.51hanghai.com

www.51hanghai.com

1359 ms

style_8_common.css

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227 ms

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422 ms

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764 ms

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589 ms

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584 ms

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602 ms

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608 ms

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613 ms

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787 ms

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989 ms

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806 ms

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805 ms

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Accessibility Review

51hanghai.com accessibility score

49

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.

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

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>).

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

51hanghai.com best practices score

50

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

51hanghai.com SEO score

76

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

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 51hanghai.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 51hanghai.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

51hanghai.com

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