Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

tideway.london

Tideway | Reconnecting London with the River Thames

Page Load Speed

4.1 sec in total

First Response

31 ms

Resources Loaded

3.3 sec

Page Rendered

717 ms

tideway.london screenshot

About Website

Visit tideway.london now to see the best up-to-date Tideway content for United Kingdom and also check out these interesting facts you probably never knew about tideway.london

Tideway is building a 25km Super Sewer under the Thames to intercept those nasty spills and clean up our river for the good of London, its wildlife and you.

Visit tideway.london

Key Findings

We analyzed Tideway.london page load time and found that the first response time was 31 ms and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

tideway.london performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

34/100

25%

SI (Speed Index)

Value11.3 s

5/100

10%

TBT (Total Blocking Time)

Value1,300 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.058

98/100

15%

TTI (Time to Interactive)

Value18.8 s

3/100

10%

Network Requests Diagram

tideway.london

31 ms

tideway.london

606 ms

style.css

405 ms

OtAutoBlock.js

71 ms

otSDKStub.js

101 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 29% of them (12 requests) were addressed to the original Tideway.london, 12% (5 requests) were made to Youtube.com and 7% (3 requests) were made to Cdn-ukwest.onetrust.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Use.typekit.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 254.8 kB (26%)

Content Size

981.4 kB

After Optimization

726.5 kB

In fact, the total size of Tideway.london main page is 981.4 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 486.2 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 168.0 kB

  • Original 183.2 kB
  • After minification 160.3 kB
  • After compression 15.2 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 22.8 kB, which is 12% 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 168.0 kB or 92% of the original size.

Image Optimization

-3%

Potential reduce by 4.6 kB

  • Original 167.2 kB
  • After minification 162.6 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. Tideway images are well optimized though.

JavaScript Optimization

-11%

Potential reduce by 55.2 kB

  • Original 486.2 kB
  • After minification 486.1 kB
  • After compression 430.9 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 55.2 kB or 11% of the original size.

CSS Optimization

-19%

Potential reduce by 27.0 kB

  • Original 144.9 kB
  • After minification 144.9 kB
  • After compression 117.8 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. Tideway.london needs all CSS files to be minified and compressed as it can save up to 27.0 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (53%)

Requests Now

32

After Optimization

15

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tideway. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

tideway.london accessibility score

86

Accessibility Issues

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

button, link, and menuitem elements do not have accessible names.

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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

Best Practices

tideway.london best practices score

83

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

tideway.london SEO score

91

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

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