Tools & Wizards About Us
graylinelondon.com screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

graylinelondon.com

London Tours at Unbeatable Prices | Gray Line London

Page Load Speed

1.7 sec in total

First Response

234 ms

Resources Loaded

1.2 sec

Page Rendered

302 ms

graylinelondon.com screenshot

About Website

Visit graylinelondon.com now to see the best up-to-date Gray Line London content and also check out these interesting facts you probably never knew about graylinelondon.com

Gray Line London is proud to be operated by Golden Tours, a London-based, family-run company that was established over 31 years ago. We are the London Experts, having served over 10 million customers ...

Visit graylinelondon.com

Key Findings

We analyzed Graylinelondon.com page load time and found that the first response time was 234 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

graylinelondon.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

56/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value890 ms

32/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value6.9 s

54/100

10%

Network Requests Diagram

graylinelondon.com

234 ms

graylinelondon.com

646 ms

style.min.css

11 ms

bootstrap.min.css

41 ms

bootstrap-icons.css

58 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 87% of them (27 requests) were addressed to the original Graylinelondon.com, 10% (3 requests) were made to Cdn.jsdelivr.net and 3% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (646 ms) belongs to the original domain Graylinelondon.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 99.8 kB (14%)

Content Size

734.7 kB

After Optimization

634.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Graylinelondon.com main page is 734.7 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Images take 386.5 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 81.2 kB

  • Original 102.4 kB
  • After minification 97.3 kB
  • After compression 21.2 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 81.2 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 11.3 kB

  • Original 386.5 kB
  • After minification 375.2 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. Gray Line London images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 7.2 kB

  • Original 189.6 kB
  • After minification 189.6 kB
  • After compression 182.4 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 67 B

  • Original 56.2 kB
  • After minification 56.2 kB
  • After compression 56.2 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. Graylinelondon.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 20 (71%)

Requests Now

28

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gray Line 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 16 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

graylinelondon.com

graylinelondon.com

234 ms

graylinelondon.com

graylinelondon.com

646 ms

style.min.css

style.min.css

11 ms

bootstrap.min.css

bootstrap.min.css

41 ms

bootstrap-icons.css

bootstrap-icons.css

58 ms

grayline.css

grayline.css

28 ms

ma5-menu.min.css

ma5-menu.min.css

24 ms

jquery-ui.css

jquery-ui.css

25 ms

jquery.min.js

jquery.min.js

22 ms

jquery-migrate.min.js

jquery-migrate.min.js

22 ms

script.min.js

script.min.js

39 ms

email-decode.min.js

email-decode.min.js

25 ms

popper.min.js

popper.min.js

47 ms

bootstrap.min.js

bootstrap.min.js

46 ms

jquery-ui.js

jquery-ui.js

50 ms

cookies.js

cookies.js

46 ms

api-request.min.js

api-request.min.js

46 ms

grayline.js

grayline.js

47 ms

site.js

site.js

48 ms

ma5-menu.js

ma5-menu.js

48 ms

jquery.backstretch.js

jquery.backstretch.js

52 ms

bgimg_loader.js

bgimg_loader.js

49 ms

forms.js

forms.js

50 ms

gtm.js

gtm.js

191 ms

logo.svg

logo.svg

144 ms

Tick.svg

Tick.svg

92 ms

home-middle-logo.png

home-middle-logo.png

89 ms

next.png

next.png

90 ms

logo-plain.svg

logo-plain.svg

94 ms

MM600057VL.jpg

MM600057VL.jpg

18 ms

bootstrap-icons.woff

bootstrap-icons.woff

16 ms

Accessibility Review

graylinelondon.com accessibility score

88

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

graylinelondon.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

graylinelondon.com 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 Graylinelondon.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 Graylinelondon.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

graylinelondon.com

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