Tools & Wizards About Us

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

fireoflondon.org.uk

The Great Fire Of London - The Great Fire of London

Page Load Speed

6.5 sec in total

First Response

89 ms

Resources Loaded

6.3 sec

Page Rendered

125 ms

About Website

Visit fireoflondon.org.uk now to see the best up-to-date Fire Of London content for United Kingdom and also check out these interesting facts you probably never knew about fireoflondon.org.uk

Everything you need to know about the Great Fire of London from the Museum of London, London Metropolitan Archives, the Monument and Guildhall Art Gallery.

Visit fireoflondon.org.uk

Key Findings

We analyzed Fireoflondon.org.uk page load time and found that the first response time was 89 ms and then it took 6.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

fireoflondon.org.uk performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

21/100

25%

SI (Speed Index)

Value9.0 s

15/100

10%

TBT (Total Blocking Time)

Value290 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.033

100/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

fireoflondon.org.uk

89 ms

www.fireoflondon.org.uk

991 ms

style.min.css

39 ms

frontend.css

16 ms

style.css

32 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 76% of them (51 requests) were addressed to the original Fireoflondon.org.uk, 9% (6 requests) were made to Cdn.userway.org and 3% (2 requests) were made to Bs.serving-sys.com. The less responsive or slowest element that took the longest time to load (4.3 sec) belongs to the original domain Fireoflondon.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 237.9 kB (20%)

Content Size

1.2 MB

After Optimization

943.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Fireoflondon.org.uk main page is 1.2 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 670.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 77.1 kB

  • Original 92.0 kB
  • After minification 92.0 kB
  • After compression 14.9 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 77.1 kB or 84% of the original size.

Image Optimization

-8%

Potential reduce by 52.4 kB

  • Original 670.9 kB
  • After minification 618.5 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. Fire Of London images are well optimized though.

JavaScript Optimization

-31%

Potential reduce by 105.8 kB

  • Original 344.4 kB
  • After minification 344.4 kB
  • After compression 238.6 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 105.8 kB or 31% of the original size.

CSS Optimization

-3%

Potential reduce by 2.6 kB

  • Original 73.9 kB
  • After minification 73.9 kB
  • After compression 71.3 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. Fireoflondon.org.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 32 (52%)

Requests Now

62

After Optimization

30

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 62 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Fire Of 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 23 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

fireoflondon.org.uk accessibility score

91

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

[role] values are not valid

Best Practices

fireoflondon.org.uk best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

fireoflondon.org.uk SEO score

100

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

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 Fireoflondon.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 Fireoflondon.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 Fire Of London. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: