Access boltoncollege.ac.uk.

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value49.1 s

0/100

25%

SI (Speed Index)

Value19.1 s

0/100

10%

TBT (Total Blocking Time)

Value1,880 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.782

5/100

15%

TTI (Time to Interactive)

Value43.2 s

0/100

10%

boltoncollege.ac.uk

387 ms

www.boltoncollege.ac.uk

293 ms

www.boltoncollege.ac.uk

2783 ms

gtm.js

60 ms

font-awesome.min.css

28 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 76% of them (69 requests) were addressed to the original Boltoncollege.ac.uk, 4% (4 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Boltoncollege.ac.uk.

Content Size

11.1 MB

After Optimization

10.1 MB

In fact, the total size of Boltoncollege.ac.uk main page is 11.1 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. Images take 10.7 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 63.4 kB

Original 75.5 kB
After minification 59.2 kB
After compression 12.1 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 16.3 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 63.4 kB or 84% of the original size.

Image Optimization

-6%

Potential reduce by 690.2 kB

Original 10.7 MB
After minification 10.0 MB

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. Bolton College images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 100.4 kB

Original 167.5 kB
After minification 138.3 kB
After compression 67.1 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 100.4 kB or 60% of the original size.

CSS Optimization

-88%

Potential reduce by 129.1 kB

Original 147.4 kB
After minification 107.3 kB
After compression 18.3 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. Boltoncollege.ac.uk needs all CSS files to be minified and compressed as it can save up to 129.1 kB or 88% of the original size.

Requests Now

After Optimization

The browser has sent 83 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bolton College. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 13 to 1 for CSS 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 semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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/).

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 Boltoncollege.ac.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 Boltoncollege.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

boltoncollege.ac.uk

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

» Bolton College

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)

Network Requests Diagram

boltoncollege.ac.uk

www.boltoncollege.ac.uk

www.boltoncollege.ac.uk

gtm.js

font-awesome.min.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

boltoncollege.ac.uk

www.boltoncollege.ac.uk

www.boltoncollege.ac.uk

gtm.js

font-awesome.min.css

reset.css

owl.carousel.min.css

owl.theme.default.min.css

featherlight.css

featherlight.gallery.css

main.css

blockcss

newedge.css

js

analytics.js

hotjar-207931.js

collect

collect

ga-audiences

jquery-3.6.0.min.js

owl.carousel.min.js

owl.animate.js

owl.autoplay.js

featherlight.js

featherlight.gallery.js

jquery.matchHeight.js

script.js

mobile.js

cookieconsent.min.js

DecisionTree.js

modules.404c8789d11e259a4872.js

css

css

trk5spn.css

p.css

hotjar-207931.js

logo.svg

menu-btn.svg

phone-pink.svg

search.svg

document-white.svg

arrow.svg

New-Year-Adult-Guide-website-artwork8.png