Tools & Wizards About Us
crc-ltd.co.uk screenshot

Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

crc-ltd.co.uk

Home | CRC

Page Load Speed

3.3 sec in total

First Response

339 ms

Resources Loaded

2.3 sec

Page Rendered

693 ms

crc-ltd.co.uk screenshot

About Website

Click here to check amazing CRC Ltd content. Otherwise, check out these important facts you probably never knew about crc-ltd.co.uk

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Key Findings

We analyzed Crc-ltd.co.uk page load time and found that the first response time was 339 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

crc-ltd.co.uk performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value460 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.07

96/100

15%

TTI (Time to Interactive)

Value9.7 s

29/100

10%

Network Requests Diagram

crc-ltd.co.uk

339 ms

crc-ltd.co.uk

283 ms

www.crc-ltd.co.uk

614 ms

js

70 ms

css_wAzZMTxemUHqp5-Ex1ilw3UFId6HV0TGmELmmyTT7B8.css

87 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 96% of them (43 requests) were addressed to the original Crc-ltd.co.uk, 4% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (750 ms) belongs to the original domain Crc-ltd.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 472.0 kB (17%)

Content Size

2.7 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Crc-ltd.co.uk main page is 2.7 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. 65% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 89.3 kB

  • Original 100.5 kB
  • After minification 88.6 kB
  • After compression 11.2 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. This page needs HTML code to be minified as it can gain 11.9 kB, which is 12% 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 89.3 kB or 89% of the original size.

Image Optimization

-16%

Potential reduce by 379.5 kB

  • Original 2.4 MB
  • After minification 2.0 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. Obviously, CRC Ltd needs image optimization as it can save up to 379.5 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 3.2 kB

  • Original 159.4 kB
  • After minification 159.4 kB
  • After compression 156.2 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 53 B

  • Original 48.1 kB
  • After minification 48.1 kB
  • After compression 48.1 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. Crc-ltd.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 4 (10%)

Requests Now

42

After Optimization

38

  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CRC Ltd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

crc-ltd.co.uk

crc-ltd.co.uk

339 ms

crc-ltd.co.uk

crc-ltd.co.uk

283 ms

www.crc-ltd.co.uk

www.crc-ltd.co.uk

614 ms

js

js

70 ms

css_wAzZMTxemUHqp5-Ex1ilw3UFId6HV0TGmELmmyTT7B8.css

css_wAzZMTxemUHqp5-Ex1ilw3UFId6HV0TGmELmmyTT7B8.css

87 ms

css_M0Kzb0ZWaBfXnoNhPOjSMSl8o-eupPE0Rwrft64SxDQ.css

css_M0Kzb0ZWaBfXnoNhPOjSMSl8o-eupPE0Rwrft64SxDQ.css

207 ms

js

js

117 ms

js_70Ol6E6Pbj_ozY336NTJaSvED_pcSczwOmxNwduWVkU.js

js_70Ol6E6Pbj_ozY336NTJaSvED_pcSczwOmxNwduWVkU.js

409 ms

eu_cookie_compliance.js

eu_cookie_compliance.js

300 ms

js_VT-xs-K2TKnD4m7TyGur5_KqVHFmpqN-hYIRPF3QIHM.js

js_VT-xs-K2TKnD4m7TyGur5_KqVHFmpqN-hYIRPF3QIHM.js

301 ms

crc_logo.svg

crc_logo.svg

71 ms

gold-badge.svg

gold-badge.svg

72 ms

hero_1600x800px.jpg

hero_1600x800px.jpg

559 ms

arrowhead.svg

arrowhead.svg

88 ms

design_cardslide_1600x800px_1.jpg

design_cardslide_1600x800px_1.jpg

559 ms

service_cardslide_1600x800px.jpg

service_cardslide_1600x800px.jpg

560 ms

testing_cardslide_1600x800px_0.jpg

testing_cardslide_1600x800px_0.jpg

562 ms

20221216_132803.jpg

20221216_132803.jpg

558 ms

defra_header2_1325x454px.jpg

defra_header2_1325x454px.jpg

224 ms

merial_right_556x397px.jpg

merial_right_556x397px.jpg

559 ms

advanced_medical_header_1325x454px.jpg

advanced_medical_header_1325x454px.jpg

559 ms

uni_oxford_islet_header_1325x454px.jpg

uni_oxford_islet_header_1325x454px.jpg

560 ms

uni_cambridge_header_1325x454px_0.jpg

uni_cambridge_header_1325x454px_0.jpg

560 ms

uni_cambridge_ifm_card_540x400px.png

uni_cambridge_ifm_card_540x400px.png

571 ms

uni_lancaster_header_1325x454px.jpg

uni_lancaster_header_1325x454px.jpg

561 ms

uni_cambridge_nano_header_1325x454px.jpg

uni_cambridge_nano_header_1325x454px.jpg

562 ms

arrowhead-right.svg

arrowhead-right.svg

561 ms

CRC_Profile.png

CRC_Profile.png

563 ms

home_cta_1600x800px.jpg

home_cta_1600x800px.jpg

571 ms

linkedin-icon.svg

linkedin-icon.svg

564 ms

SafeContractor-Certification%20Seal.png

SafeContractor-Certification%20Seal.png

750 ms

Approachable_UKAS%20%281%29.svg

Approachable_UKAS%20%281%29.svg

565 ms

bsc-member-logo.svg

bsc-member-logo.svg

568 ms

20221216_132803.jpg

20221216_132803.jpg

351 ms

defra_header2_1325x454px.jpg

defra_header2_1325x454px.jpg

352 ms

merial_right_556x397px.jpg

merial_right_556x397px.jpg

351 ms

advanced_medical_header_1325x454px.jpg

advanced_medical_header_1325x454px.jpg

383 ms

uni_oxford_islet_header_1325x454px.jpg

uni_oxford_islet_header_1325x454px.jpg

384 ms

uni_cambridge_header_1325x454px_0.jpg

uni_cambridge_header_1325x454px_0.jpg

399 ms

uni_cambridge_ifm_card_540x400px.png

uni_cambridge_ifm_card_540x400px.png

469 ms

uni_lancaster_header_1325x454px.jpg

uni_lancaster_header_1325x454px.jpg

400 ms

uni_cambridge_nano_header_1325x454px.jpg

uni_cambridge_nano_header_1325x454px.jpg

410 ms

CRC_Profile.png

CRC_Profile.png

413 ms

arrowhead-grey-left.svg

arrowhead-grey-left.svg

129 ms

arrowhead-grey-right.svg

arrowhead-grey-right.svg

135 ms

Accessibility Review

crc-ltd.co.uk accessibility score

82

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

[aria-*] attributes do not match their roles

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

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

crc-ltd.co.uk 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

crc-ltd.co.uk SEO score

69

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

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 Crc-ltd.co.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 Crc-ltd.co.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

crc-ltd.co.uk

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