Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

derelictlondon.com

Derelict London - Photography, Social History and Guided Walking Tours - Derelict London homepage

Page Load Speed

4.2 sec in total

First Response

164 ms

Resources Loaded

3.3 sec

Page Rendered

742 ms

derelictlondon.com screenshot

About Website

Visit derelictlondon.com now to see the best up-to-date Derelict London content for United Kingdom and also check out these interesting facts you probably never knew about derelictlondon.com

This is not a compilation of familiar tourist sights, as another of those is hardly needed, but a depiction of an (often un-picturesque) view of everyday life in London

Visit derelictlondon.com

Key Findings

We analyzed Derelictlondon.com page load time and found that the first response time was 164 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

derelictlondon.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value2,460 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.122

84/100

15%

TTI (Time to Interactive)

Value21.1 s

1/100

10%

Network Requests Diagram

derelictlondon.com

164 ms

www.derelictlondon.com

184 ms

www.derelictlondon.com

687 ms

sites.css

22 ms

fancybox.css

32 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 78% of them (60 requests) were addressed to the original Derelictlondon.com, 18% (14 requests) were made to Cdn2.editmysite.com and 1% (1 request) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Derelictlondon.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 125.6 kB (4%)

Content Size

3.4 MB

After Optimization

3.3 MB

In fact, the total size of Derelictlondon.com main page is 3.4 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. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 106.1 kB

  • Original 125.7 kB
  • After minification 121.3 kB
  • After compression 19.6 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 106.1 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 8.1 kB

  • Original 2.8 MB
  • After minification 2.8 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. Derelict London images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 10.9 kB

  • Original 509.8 kB
  • After minification 509.8 kB
  • After compression 498.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 408 B

  • Original 41.5 kB
  • After minification 41.5 kB
  • After compression 41.1 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. Derelictlondon.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 55 (80%)

Requests Now

69

After Optimization

14

The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Derelict London. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

derelictlondon.com accessibility score

85

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.

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

derelictlondon.com best practices score

83

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

Page has valid source maps

SEO Factors

derelictlondon.com SEO score

77

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

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

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 Derelictlondon.com 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 Derelictlondon.com 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 Derelict London. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: