Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

libguides.nus.edu.sg

Home - LibGuides at National University of Singapore

Page Load Speed

2.6 sec in total

First Response

460 ms

Resources Loaded

1.9 sec

Page Rendered

188 ms

libguides.nus.edu.sg screenshot

About Website

Welcome to libguides.nus.edu.sg homepage info - get ready to check Lib Guides Nus best content for Singapore right away, or after learning these important things about libguides.nus.edu.sg

Visit libguides.nus.edu.sg

Key Findings

We analyzed Libguides.nus.edu.sg page load time and found that the first response time was 460 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

libguides.nus.edu.sg performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value8.8 s

1/100

25%

SI (Speed Index)

Value7.1 s

31/100

10%

TBT (Total Blocking Time)

Value790 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0.147

77/100

15%

TTI (Time to Interactive)

Value7.9 s

43/100

10%

Network Requests Diagram

libguides.nus.edu.sg

460 ms

1.8.24_themes_base_jquery-ui.css

37 ms

bootstrap.min.css

11 ms

bootstrap-accessibility_1.0.3.css

69 ms

springshare.public.min.css

73 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 38% of them (15 requests) were addressed to the original Libguides.nus.edu.sg, 23% (9 requests) were made to S3.amazonaws.com and 10% (4 requests) were made to Sg.libraryh3lp.com. The less responsive or slowest element that took the longest time to load (654 ms) relates to the external source Sg.libraryh3lp.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 849.2 kB (58%)

Content Size

1.5 MB

After Optimization

605.9 kB

In fact, the total size of Libguides.nus.edu.sg main page is 1.5 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. 50% of websites need less resources to load. Javascripts take 723.6 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 110.1 kB

  • Original 123.9 kB
  • After minification 111.5 kB
  • After compression 13.7 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 110.1 kB or 89% of the original size.

Image Optimization

-3%

Potential reduce by 9.4 kB

  • Original 339.2 kB
  • After minification 329.8 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. Lib Guides Nus images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 508.3 kB

  • Original 723.6 kB
  • After minification 718.8 kB
  • After compression 215.3 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 508.3 kB or 70% of the original size.

CSS Optimization

-82%

Potential reduce by 221.3 kB

  • Original 268.4 kB
  • After minification 257.5 kB
  • After compression 47.0 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. Libguides.nus.edu.sg needs all CSS files to be minified and compressed as it can save up to 221.3 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (45%)

Requests Now

38

After Optimization

21

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lib Guides Nus. 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 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

libguides.nus.edu.sg accessibility score

97

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

Best Practices

libguides.nus.edu.sg best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

libguides.nus.edu.sg SEO score

89

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

High

Tap targets are not sized appropriately

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 Libguides.nus.edu.sg 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 Libguides.nus.edu.sg 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 Lib Guides Nus. 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: