Tools & Wizards About Us

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 84

    SEO

    Google-friendlier than
    52% of websites

sustrans.org.uk

Home - Sustrans.org.uk

Page Load Speed

8.7 sec in total

First Response

371 ms

Resources Loaded

8 sec

Page Rendered

342 ms

About Website

Click here to check amazing Sustrans content for United Kingdom. Otherwise, check out these important facts you probably never knew about sustrans.org.uk

We are Sustrans, the charity making it easier for everyone to walk, wheel and cycle.

Visit sustrans.org.uk

Key Findings

We analyzed Sustrans.org.uk page load time and found that the first response time was 371 ms and then it took 8.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

sustrans.org.uk performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value17.9 s

0/100

10%

TBT (Total Blocking Time)

Value730 ms

40/100

30%

CLS (Cumulative Layout Shift)

Value0.195

63/100

15%

TTI (Time to Interactive)

Value12.6 s

14/100

10%

Network Requests Diagram

sustrans.org.uk

371 ms

sustrans.org.uk

1029 ms

www.sustrans.org.uk

1544 ms

main.css

2402 ms

polyfill.min.js

1007 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 42% of them (8 requests) were addressed to the original Sustrans.org.uk, 47% (9 requests) were made to Cookie-cdn.cookiepro.com and 5% (1 request) were made to Cdn.polyfill.io. The less responsive or slowest element that took the longest time to load (2.8 sec) belongs to the original domain Sustrans.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 174.1 kB (36%)

Content Size

479.7 kB

After Optimization

305.6 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Sustrans.org.uk main page is 479.7 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. 20% of websites need less resources to load. Javascripts take 253.9 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 169.7 kB

  • Original 193.3 kB
  • After minification 141.4 kB
  • After compression 23.7 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. This page needs HTML code to be minified as it can gain 51.9 kB, which is 27% 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 169.7 kB or 88% of the original size.

JavaScript Optimization

-0%

Potential reduce by 199 B

  • Original 253.9 kB
  • After minification 253.9 kB
  • After compression 253.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-13%

Potential reduce by 4.2 kB

  • Original 32.5 kB
  • After minification 32.5 kB
  • After compression 28.2 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. Sustrans.org.uk needs all CSS files to be minified and compressed as it can save up to 4.2 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (43%)

Requests Now

14

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sustrans. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

sustrans.org.uk accessibility score

88

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

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

sustrans.org.uk 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

SEO Factors

sustrans.org.uk SEO score

84

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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 Sustrans.org.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 Sustrans.org.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 Sustrans. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: