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Report Summary

About Website

Welcome to jseq.com homepage info - get ready to check Jseq best content right away, or after learning these important things about jseq.com

江苏省地震工程研究院

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name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.5 s

100/100

25%

SI (Speed Index)

Value5.0 s

64/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

jseq.com

5629 ms

link.css

497 ms

AC_RunActiveContent.js

940 ms

bg.gif

291 ms

logo.gif

781 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that all of those requests were addressed to Jseq.com and no external sources were called. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain Jseq.com.

Content Size

101.7 kB

After Optimization

11.8 kB

In fact, the total size of Jseq.com main page is 101.7 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. Only 5% of websites need less resources to load. HTML takes 91.8 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 82.3 kB

Original 91.8 kB
After minification 74.1 kB
After compression 9.5 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 17.8 kB, which is 19% 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 82.3 kB or 90% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 375 B
After minification 375 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. Jseq images are well optimized though.

JavaScript Optimization

-81%

Potential reduce by 6.7 kB

Original 8.3 kB
After minification 5.2 kB
After compression 1.6 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 6.7 kB or 81% of the original size.

CSS Optimization

-66%

Potential reduce by 788 B

Original 1.2 kB
After minification 900 B
After compression 397 B

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. Jseq.com needs all CSS files to be minified and compressed as it can save up to 788 B or 66% of the original size.

Requests Now

After Optimization

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jseq. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests 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

Search Engine Optimization Advices

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

High

Links are not crawlable

High

Page is blocked from indexing

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 Jseq.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 Jseq.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

jseq.com

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

网站已经被阻止访问

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)