Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

Page Load Speed

1.3 sec in total

First Response

348 ms

Resources Loaded

869 ms

Page Rendered

132 ms

library.cf.ac.uk screenshot

About Website

Visit library.cf.ac.uk now to see the best up-to-date Library Cf content for United Kingdom and also check out these interesting facts you probably never knew about library.cf.ac.uk

Visit library.cf.ac.uk

Key Findings

We analyzed Library.cf.ac.uk page load time and found that the first response time was 348 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

library.cf.ac.uk performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value14.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value17.7 s

0/100

25%

SI (Speed Index)

Value16.1 s

0/100

10%

TBT (Total Blocking Time)

Value3,410 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.269

45/100

15%

TTI (Time to Interactive)

Value22.9 s

1/100

10%

Network Requests Diagram

library.cf.ac.uk

348 ms

library.cardiff.ac.uk

261 ms

frameWork.css

88 ms

header.css

171 ms

quickSearchBar.css

169 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 10% of them (1 request) were addressed to the original Library.cf.ac.uk, 90% (9 requests) were made to Library.cardiff.ac.uk. The less responsive or slowest element that took the longest time to load (348 ms) belongs to the original domain Library.cf.ac.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 12.6 kB (55%)

Content Size

23.1 kB

After Optimization

10.4 kB

In fact, the total size of Library.cf.ac.uk main page is 23.1 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. CSS take 11.7 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 2.6 kB

  • Original 3.6 kB
  • After minification 2.4 kB
  • After compression 1.0 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 1.2 kB, which is 32% 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 2.6 kB or 72% of the original size.

Image Optimization

-8%

Potential reduce by 643 B

  • Original 7.8 kB
  • After minification 7.2 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. Library Cf images are well optimized though.

CSS Optimization

-81%

Potential reduce by 9.4 kB

  • Original 11.7 kB
  • After minification 5.8 kB
  • After compression 2.3 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. Library.cf.ac.uk needs all CSS files to be minified and compressed as it can save up to 9.4 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (38%)

Requests Now

8

After Optimization

5

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Library Cf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

library.cf.ac.uk accessibility score

89

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

Best Practices

library.cf.ac.uk 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

High

Missing source maps for large first-party JavaScript

SEO Factors

library.cf.ac.uk SEO score

73

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Library.cf.ac.uk can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Library.cf.ac.uk 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 Library Cf. 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: