Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

dmm.org.uk

Durham Mining Museum

Page Load Speed

1.6 sec in total

First Response

364 ms

Resources Loaded

1 sec

Page Rendered

165 ms

dmm.org.uk screenshot

About Website

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

This site hosts the Durham Mining Museum website

Visit dmm.org.uk

Key Findings

We analyzed Dmm.org.uk page load time and found that the first response time was 364 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

dmm.org.uk performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.6 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

Network Requests Diagram

dmm.org.uk

364 ms

style.css

349 ms

m_back.gif

156 ms

corner_1.gif

218 ms

corner_2.gif

226 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to Dmm.org.uk and no external sources were called. The less responsive or slowest element that took the longest time to load (364 ms) belongs to the original domain Dmm.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 13.0 kB (82%)

Content Size

15.8 kB

After Optimization

2.8 kB

In fact, the total size of Dmm.org.uk main page is 15.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. HTML takes 8.4 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 6.4 kB

  • Original 8.4 kB
  • After minification 8.0 kB
  • After compression 2.0 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 6.4 kB or 77% of the original size.

CSS Optimization

-89%

Potential reduce by 6.6 kB

  • Original 7.4 kB
  • After minification 6.2 kB
  • After compression 844 B

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. Dmm.org.uk needs all CSS files to be minified and compressed as it can save up to 6.6 kB or 89% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dmm. According to our analytics all requests are already optimized.

Accessibility Review

dmm.org.uk accessibility score

88

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Links do not have a discernible name

Best Practices

dmm.org.uk best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

dmm.org.uk SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

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 doesn't use legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    WINDOWS-1251

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dmm.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 Dmm.org.uk main page’s claimed encoding is windows-1251. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Dmm. 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: