Tools & Wizards About Us

Report Summary

  • 14

    Performance

    Renders faster than
    26% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

dulwichpicturegallery.org.uk

Home | Dulwich Picture Gallery

Page Load Speed

7.2 sec in total

First Response

253 ms

Resources Loaded

6.6 sec

Page Rendered

440 ms

About Website

Click here to check amazing Dulwich Picture Gallery content for United Kingdom. Otherwise, check out these important facts you probably never knew about dulwichpicturegallery.org.uk

Dulwich Picture Gallery is a vibrant cultural hub hosting some of the UK’s leading exhibitions alongside its Permanent Collection of Baroque masterpieces. It also stages a wide-ranging programme of pu...

Visit dulwichpicturegallery.org.uk

Key Findings

We analyzed Dulwichpicturegallery.org.uk page load time and found that the first response time was 253 ms and then it took 7 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

dulwichpicturegallery.org.uk performance score

14

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value29.7 s

0/100

25%

SI (Speed Index)

Value16.2 s

0/100

10%

TBT (Total Blocking Time)

Value2,200 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.179

68/100

15%

TTI (Time to Interactive)

Value26.6 s

0/100

10%

Network Requests Diagram

dulwichpicturegallery.org.uk

253 ms

www.dulwichpicturegallery.org.uk

3978 ms

css

663 ms

modernizr-2.6.2.min.js

349 ms

js

378 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 94% of them (47 requests) were addressed to the original Dulwichpicturegallery.org.uk, 6% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (4 sec) belongs to the original domain Dulwichpicturegallery.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 446.1 kB (11%)

Content Size

4.1 MB

After Optimization

3.7 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Dulwichpicturegallery.org.uk main page is 4.1 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. 30% of websites need less resources to load. Images take 3.8 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 38.3 kB

  • Original 45.6 kB
  • After minification 32.6 kB
  • After compression 7.3 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 13.1 kB, which is 29% 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 38.3 kB or 84% of the original size.

Image Optimization

-6%

Potential reduce by 217.8 kB

  • Original 3.8 MB
  • After minification 3.6 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. Dulwich Picture Gallery images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 190.0 kB

  • Original 272.5 kB
  • After minification 201.0 kB
  • After compression 82.5 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 190.0 kB or 70% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (20%)

Requests Now

45

After Optimization

36

  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dulwich Picture Gallery. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

dulwichpicturegallery.org.uk accessibility score

94

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.

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

dulwichpicturegallery.org.uk best practices score

67

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

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

dulwichpicturegallery.org.uk SEO score

92

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dulwichpicturegallery.org.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Dulwichpicturegallery.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 description is not detected on the main page of Dulwich Picture Gallery. 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: