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51tbl.com screenshot

Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 48

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

51tbl.com

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Page Load Speed

5.2 sec in total

First Response

670 ms

Resources Loaded

3.8 sec

Page Rendered

651 ms

51tbl.com screenshot

About Website

Welcome to 51tbl.com homepage info - get ready to check 51 Tbl best content for China right away, or after learning these important things about 51tbl.com

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Visit 51tbl.com

Key Findings

We analyzed 51tbl.com page load time and found that the first response time was 670 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

51tbl.com performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

21/100

25%

SI (Speed Index)

Value5.4 s

57/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value4.9 s

77/100

10%

Network Requests Diagram

51tbl.com

670 ms

www.51tbl.com

1742 ms

ip2city

541 ms

index.css

412 ms

jquery.min.js

442 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 80% of them (12 requests) were addressed to the original 51tbl.com, 7% (1 request) were made to R.inews.qq.com and 7% (1 request) were made to Ip.ws.126.net. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain 51tbl.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 259.2 kB (76%)

Content Size

341.3 kB

After Optimization

82.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 51tbl.com main page is 341.3 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. 25% of websites need less resources to load. HTML takes 249.1 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 225.1 kB

  • Original 249.1 kB
  • After minification 229.9 kB
  • After compression 23.9 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 225.1 kB or 90% of the original size.

Image Optimization

-17%

Potential reduce by 4.5 kB

  • Original 26.4 kB
  • After minification 21.9 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. Obviously, 51 Tbl needs image optimization as it can save up to 4.5 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-47%

Potential reduce by 28.7 kB

  • Original 60.6 kB
  • After minification 50.6 kB
  • After compression 31.9 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 28.7 kB or 47% of the original size.

CSS Optimization

-18%

Potential reduce by 919 B

  • Original 5.1 kB
  • After minification 5.1 kB
  • After compression 4.2 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. 51tbl.com needs all CSS files to be minified and compressed as it can save up to 919 B or 18% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (42%)

Requests Now

12

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Tbl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

51tbl.com

51tbl.com

670 ms

www.51tbl.com

www.51tbl.com

1742 ms

ip2city

ip2city

541 ms

index.css

index.css

412 ms

jquery.min.js

jquery.min.js

442 ms

my.js

my.js

453 ms

jquery.lazyload.js

jquery.lazyload.js

313 ms

ipquery

ipquery

72 ms

gg.js

gg.js

463 ms

logo.png

logo.png

222 ms

lanqiu.png

lanqiu.png

260 ms

zuqiu.png

zuqiu.png

226 ms

collapsed_no.gif

collapsed_no.gif

213 ms

against_default.80a12f5.png

against_default.80a12f5.png

235 ms

push.js

push.js

968 ms

Accessibility Review

51tbl.com accessibility score

48

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

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

51tbl.com best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

51tbl.com SEO score

91

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

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 51tbl.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 51tbl.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

51tbl.com

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