Access 51mall.ca. 51集市_二手物品买卖快来51集市_加拿大中文二手交易平台二手市场

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value3.7 s

85/100

10%

TBT (Total Blocking Time)

Value1,650 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value7.2 s

51/100

10%

51mall.ca

130 ms

mall.51.ca

49 ms

mall.51.ca

197 ms

common.min.css

178 ms

bpopup.login.min.css

137 ms

Our browser made a total of 136 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original 51mall.ca, 77% (105 requests) were made to Mall.51.ca and 7% (10 requests) were made to Engine.wuyou.ca. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Yzf.qq.com.

Content Size

536.9 kB

After Optimization

392.7 kB

In fact, the total size of 51mall.ca main page is 536.9 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. 45% of websites need less resources to load. Images take 294.7 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 94.9 kB

Original 117.8 kB
After minification 112.5 kB
After compression 22.9 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 94.9 kB or 81% of the original size.

Image Optimization

-5%

Potential reduce by 15.3 kB

Original 294.7 kB
After minification 279.4 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. 51 Mall images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 33.3 kB

Original 115.2 kB
After minification 115.2 kB
After compression 81.9 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 33.3 kB or 29% of the original size.

CSS Optimization

-8%

Potential reduce by 726 B

Original 9.3 kB
After minification 9.3 kB
After compression 8.6 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. 51mall.ca has all CSS files already compressed.

Requests Now

133

After Optimization

The browser has sent 133 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Mall. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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 51mall.ca 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 51mall.ca 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

51mall.ca

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

Report Summary

Performance

Accessibility

Best Practices

SEO

51集市_二手物品买卖 快来51集市_加拿大中文二手交易平台二手市场_51.CA

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

51mall.ca

mall.51.ca

mall.51.ca

common.min.css

bpopup.login.min.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

51mall.ca

mall.51.ca

mall.51.ca

common.min.css

bpopup.login.min.css

jquery-1.7.2.min.js

jquery.bpopup.min.js

jquery.bpopup.login.min.js

jquery.SuperSlide.js

utils.min.js

jquery.cookie.min.js

lang.min.js

jquery.rolling.min.js

styledSelect.min.js

common.min.js

header.min.js

sso.login.min.js

header.min.css

home.min.css

sliderbox.css

newhome.min.js

wuyoujs.php

button.min.js

header.gif

top1_02.gif

top1_01.gif

top1_03.gif

header_02.gif

bg_header_top_btn.gif

s_1555785.jpg

s_2010401.jpeg

s_2019043.jpg

s_1208603.jpg

s_1882951.jpg

s_2023864.jpg

s_2023885.jpg

s_1650810.jpg

s_2021437.jpg

s_1992987.jpeg

s_2023646.jpg

s_1891927.jpg

s_1875045.jpeg

s_2023951.jpeg

51集市_二手物品买卖快来51集市_加拿大中文二手交易平台二手市场_51.CA