Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

unibus.co.uk

Travelling to Derby by bus - Derby - University of Derby

Page Load Speed

2.4 sec in total

First Response

382 ms

Resources Loaded

1.7 sec

Page Rendered

272 ms

unibus.co.uk screenshot

About Website

Visit unibus.co.uk now to see the best up-to-date Uni Bus content and also check out these interesting facts you probably never knew about unibus.co.uk

Unibus travel is more sustainable than single-occupancy cars. Find out more about where our buses run from and how often. 

Visit unibus.co.uk

Key Findings

We analyzed Unibus.co.uk page load time and found that the first response time was 382 ms and then it took 2 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

unibus.co.uk performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value15.1 s

0/100

25%

SI (Speed Index)

Value7.6 s

26/100

10%

TBT (Total Blocking Time)

Value840 ms

34/100

30%

CLS (Cumulative Layout Shift)

Value0.622

10/100

15%

TTI (Time to Interactive)

Value14.2 s

9/100

10%

Network Requests Diagram

382 ms

289 ms

151 ms

otSDKStub.js

29 ms

b3c2ce156dd59da35b3a3b2038a2db82.js

227 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Unibus.co.uk, 16% (4 requests) were made to Derbyu-new-search.squiz.cloud and 12% (3 requests) were made to Cdn.cookielaw.org. The less responsive or slowest element that took the longest time to load (839 ms) relates to the external source Derbyu-new-search.squiz.cloud.

Page Optimization Overview & Recommendations

Page size can be reduced by 606.2 kB (31%)

Content Size

2.0 MB

After Optimization

1.4 MB

In fact, the total size of Unibus.co.uk main page is 2.0 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. Javascripts take 790.8 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 96.9 kB

  • Original 128.9 kB
  • After minification 100.4 kB
  • After compression 32.0 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 28.5 kB, which is 22% 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 96.9 kB or 75% of the original size.

Image Optimization

-5%

Potential reduce by 24.7 kB

  • Original 514.0 kB
  • After minification 489.3 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. Uni Bus images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 483.9 kB

  • Original 790.8 kB
  • After minification 790.8 kB
  • After compression 306.9 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 483.9 kB or 61% of the original size.

CSS Optimization

-0%

Potential reduce by 681 B

  • Original 526.4 kB
  • After minification 526.4 kB
  • After compression 525.7 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. Unibus.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (63%)

Requests Now

16

After Optimization

6

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uni Bus. 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 as a result speed up the page load time.

Accessibility Review

unibus.co.uk accessibility score

98

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.

Best Practices

unibus.co.uk best practices score

75

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

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

unibus.co.uk SEO score

99

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 Unibus.co.uk 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 Unibus.co.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 data is detected on the main page of Uni Bus. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: