Report Summary

  • 88

    Performance

    Renders faster than
    90% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

raman.xmu.edu.cn

Raman Instruments – Raman center in Xiamen University

Page Load Speed

19.1 sec in total

First Response

6.3 sec

Resources Loaded

12.6 sec

Page Rendered

242 ms

raman.xmu.edu.cn screenshot

About Website

Visit raman.xmu.edu.cn now to see the best up-to-date Raman Xmu content for China and also check out these interesting facts you probably never knew about raman.xmu.edu.cn

Visit raman.xmu.edu.cn

Key Findings

We analyzed Raman.xmu.edu.cn page load time and found that the first response time was 6.3 sec and then it took 12.8 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

raman.xmu.edu.cn performance score

88

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

88/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.161

73/100

15%

TTI (Time to Interactive)

Value2.3 s

99/100

10%

Network Requests Diagram

raman.xmu.edu.cn

6314 ms

wp-emoji-release.min.js

355 ms

front.css

659 ms

font-awesome.min.css

701 ms

style.css

688 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 67% of them (34 requests) were addressed to the original Raman.xmu.edu.cn, 14% (7 requests) were made to I1.wp.com and 6% (3 requests) were made to S.gravatar.com. The less responsive or slowest element that took the longest time to load (6.3 sec) belongs to the original domain Raman.xmu.edu.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 510.2 kB (57%)

Content Size

889.9 kB

After Optimization

379.7 kB

In fact, the total size of Raman.xmu.edu.cn main page is 889.9 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. 35% of websites need less resources to load. Javascripts take 342.5 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 27.1 kB

  • Original 34.9 kB
  • After minification 33.8 kB
  • After compression 7.8 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 27.1 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 2.3 kB

  • Original 224.2 kB
  • After minification 221.9 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. Raman Xmu images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 241.1 kB

  • Original 342.5 kB
  • After minification 318.2 kB
  • After compression 101.4 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 241.1 kB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 239.6 kB

  • Original 288.3 kB
  • After minification 257.7 kB
  • After compression 48.6 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. Raman.xmu.edu.cn needs all CSS files to be minified and compressed as it can save up to 239.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (72%)

Requests Now

47

After Optimization

13

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Raman Xmu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

raman.xmu.edu.cn accessibility score

97

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

raman.xmu.edu.cn best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

raman.xmu.edu.cn SEO score

93

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Raman.xmu.edu.cn can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Raman.xmu.edu.cn 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

Open Graph description is not detected on the main page of Raman Xmu. 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: