Access tjdejia.com. 预应力钢绞线|德嘉预应力钢绞线|天津德嘉预应力钢绞线有限公司

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value32.6 s

0/100

25%

SI (Speed Index)

Value30.8 s

0/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.96

2/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

tjdejia.com

4327 ms

page_index.css

332 ms

jquery.js

815 ms

lib.min.js

1186 ms

FrontColumns_navigation01.js

1605 ms

Our browser made a total of 65 requests to load all elements on the main page. We found that 98% of them (64 requests) were addressed to the original Tjdejia.com, 2% (1 request) were made to Group1.gather.shushang-z.cn. The less responsive or slowest element that took the longest time to load (8.1 sec) belongs to the original domain Tjdejia.com.

Content Size

4.8 MB

After Optimization

4.0 MB

In fact, the total size of Tjdejia.com main page is 4.8 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. 40% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 44.5 kB

Original 51.0 kB
After minification 43.3 kB
After compression 6.5 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. This page needs HTML code to be minified as it can gain 7.7 kB, which is 15% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 44.5 kB or 87% of the original size.

Image Optimization

-6%

Potential reduce by 248.8 kB

Original 4.1 MB
After minification 3.9 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. Tjdejia images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 343.2 kB

Original 454.7 kB
After minification 417.7 kB
After compression 111.5 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 343.2 kB or 75% of the original size.

CSS Optimization

-85%

Potential reduce by 96.9 kB

Original 113.6 kB
After minification 87.8 kB
After compression 16.7 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. Tjdejia.com needs all CSS files to be minified and compressed as it can save up to 96.9 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tjdejia. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 26 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

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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 Tjdejia.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 Tjdejia.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

tjdejia.com

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

预应力钢绞线|德嘉预应力钢绞线|天津德嘉预应力钢绞线有限公司

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

tjdejia.com

page_index.css

jquery.js

lib.min.js

FrontColumns_navigation01.js

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

tjdejia.com

page_index.css

jquery.js

lib.min.js

FrontColumns_navigation01.js

FrontPublic_slideShow01.js

png.js

FrontNews_list01.js

FrontNews_list01.js

FrontProducts_generalSearch01.js

FrontProducts_generalSearch01.js

FrontProducts_list01.js

visittrack.js

common.css

borders.css

content_index.css

layout_index.css

page_index_specifies.css

page_index_columns.css

page_index_public.css

page_index_news.css

page_index_products.css

ui-all.css

button.css

cetop.css

border.css

border.css

border.css

border.css

border.css

border.css

FrontSpecifies_show01-d3_c1.css

FrontColumns_navigation01-d2_c1.css

FrontPublic_slideShow01-d1_c1.css

FrontNews_list01-d1_c1_01.css

FrontProducts_list01-d5_c1.css

FrontProducts_list01-d3_c1_01.css

FrontProducts_generalSearch01-d1_c1_01.css

mainbg.jpg

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newgg.jpg

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