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rafmuseum.org screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

rafmuseum.org

RAF Museum | Free Entry Aircraft Museum in London & Midlands

Page Load Speed

1.9 sec in total

First Response

56 ms

Resources Loaded

1.5 sec

Page Rendered

298 ms

rafmuseum.org screenshot

About Website

Visit rafmuseum.org now to see the best up-to-date RAF Museum content and also check out these interesting facts you probably never knew about rafmuseum.org

Discover the RAF Museum with free entry. Perfect for a family day out or aviation enthusiasts, explore historic aircrafts & interactive exhibits. Book now!

Visit rafmuseum.org

Key Findings

We analyzed Rafmuseum.org page load time and found that the first response time was 56 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

rafmuseum.org performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.0 s

0/100

25%

SI (Speed Index)

Value20.3 s

0/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value0.137

80/100

15%

TTI (Time to Interactive)

Value19.8 s

2/100

10%

Network Requests Diagram

rafmuseum.org

56 ms

rafmuseum.org

22 ms

countdown.8cc3df.css

40 ms

230-layout.css

39 ms

search-forms.css

66 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Rafmuseum.org, 66% (25 requests) were made to Rafmuseum.org.uk and 8% (3 requests) were made to Assets.rafmuseum.org.uk. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Rafmuseum.org.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 234.1 kB (19%)

Content Size

1.2 MB

After Optimization

985.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rafmuseum.org 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. 50% of websites need less resources to load. Images take 804.4 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 139.6 kB

  • Original 161.7 kB
  • After minification 131.2 kB
  • After compression 22.1 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 30.4 kB, which is 19% 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 139.6 kB or 86% of the original size.

Image Optimization

-12%

Potential reduce by 93.7 kB

  • Original 804.4 kB
  • After minification 710.7 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. Obviously, RAF Museum needs image optimization as it can save up to 93.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 586 B

  • Original 149.8 kB
  • After minification 149.8 kB
  • After compression 149.2 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

-0%

Potential reduce by 234 B

  • Original 103.9 kB
  • After minification 103.9 kB
  • After compression 103.7 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. Rafmuseum.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (57%)

Requests Now

30

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RAF Museum. 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.

Network Requests Diagram

rafmuseum.org

rafmuseum.org

56 ms

rafmuseum.org

rafmuseum.org

22 ms

countdown.8cc3df.css

countdown.8cc3df.css

40 ms

230-layout.css

230-layout.css

39 ms

search-forms.css

search-forms.css

66 ms

app.9e2840.css

app.9e2840.css

43 ms

animate.min.css

animate.min.css

63 ms

jquery.min.js

jquery.min.js

65 ms

jquery-migrate.min.js

jquery-migrate.min.js

65 ms

monsido-script.js

monsido-script.js

228 ms

276.c16d17.js

276.c16d17.js

63 ms

countdown.bf48e6.js

countdown.bf48e6.js

106 ms

230-layout.js

230-layout.js

104 ms

213.bd103b.js

213.bd103b.js

105 ms

lazysizes.4414ac.js

lazysizes.4414ac.js

104 ms

660.d5d0b3.js

660.d5d0b3.js

105 ms

app.b79648.js

app.b79648.js

105 ms

gtm.js

gtm.js

200 ms

cloud-background.jpg

cloud-background.jpg

178 ms

webfont.js

webfont.js

140 ms

RAFM_Hero-V4.png

RAFM_Hero-V4.png

173 ms

Test_Flight-smaller-595x356.jpg

Test_Flight-smaller-595x356.jpg

171 ms

ico-search-gray-01.14ca33.svg

ico-search-gray-01.14ca33.svg

127 ms

logo.c9dd05.svg

logo.c9dd05.svg

447 ms

ico-marker-blue-01.839962.png

ico-marker-blue-01.839962.png

392 ms

arrow-down-red-01.d04072.svg

arrow-down-red-01.d04072.svg

464 ms

pixel.png

pixel.png

127 ms

NeoSansStd-Medium.6154c6.woff

NeoSansStd-Medium.6154c6.woff

542 ms

NeoSansStd-Regular.ab8baa.woff

NeoSansStd-Regular.ab8baa.woff

530 ms

NeoSansStd-Bold.64ff2a.woff

NeoSansStd-Bold.64ff2a.woff

507 ms

fa-regular-400.cde875.ttf

fa-regular-400.cde875.ttf

1053 ms

fa-solid-900.42ce62.ttf

fa-solid-900.42ce62.ttf

1110 ms

fa-brands-400.bb8a10.ttf

fa-brands-400.bb8a10.ttf

902 ms

css

css

51 ms

font

font

16 ms

tracking.monsido.com

tracking.monsido.com

93 ms

heatmaps.js

heatmaps.js

52 ms

KjWWpcY1otyyFHzKK73vhA.json

KjWWpcY1otyyFHzKK73vhA.json

18 ms

Accessibility Review

rafmuseum.org accessibility score

96

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

rafmuseum.org 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rafmuseum.org SEO score

98

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

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 Rafmuseum.org 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 Rafmuseum.org 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

rafmuseum.org

Open Graph data is detected on the main page of RAF Museum. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: