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analab.co.uk screenshot

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 70

    SEO

    Google-friendlier than
    30% of websites

analab.co.uk

Scientific Laboratory Supplies (SLS) Ltd | Lab Supplies

Page Load Speed

3.3 sec in total

First Response

190 ms

Resources Loaded

2.1 sec

Page Rendered

999 ms

analab.co.uk screenshot

About Website

Welcome to analab.co.uk homepage info - get ready to check Ana Lab best content right away, or after learning these important things about analab.co.uk

SLS are the UK's largest independent supplier of  chemicals, laboratory equipment and consumables. View our extensive range of products and shop online securely.

Visit analab.co.uk

Key Findings

We analyzed Analab.co.uk page load time and found that the first response time was 190 ms and then it took 3.1 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

analab.co.uk performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.5 s

2/100

10%

LCP (Largest Contentful Paint)

Value14.0 s

0/100

25%

SI (Speed Index)

Value12.7 s

3/100

10%

TBT (Total Blocking Time)

Value1,280 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value1.023

2/100

15%

TTI (Time to Interactive)

Value34.2 s

0/100

10%

Network Requests Diagram

analab.co.uk

190 ms

www.scientificlabs.co.uk

861 ms

gtm.js

66 ms

fontawesome53f5fa4529.js

221 ms

jquery.min.js

298 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Analab.co.uk, 92% (57 requests) were made to Scientificlabs.co.uk and 3% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (861 ms) relates to the external source Scientificlabs.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 212.0 kB (29%)

Content Size

733.1 kB

After Optimization

521.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Analab.co.uk main page is 733.1 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 266.6 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 175.3 kB

  • Original 209.2 kB
  • After minification 177.7 kB
  • After compression 33.9 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 31.6 kB, which is 15% 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 175.3 kB or 84% of the original size.

Image Optimization

-10%

Potential reduce by 26.7 kB

  • Original 266.6 kB
  • After minification 239.9 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. Ana Lab images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 5.4 kB

  • Original 193.9 kB
  • After minification 193.9 kB
  • After compression 188.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-7%

Potential reduce by 4.6 kB

  • Original 63.3 kB
  • After minification 63.3 kB
  • After compression 58.8 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. Analab.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (30%)

Requests Now

54

After Optimization

38

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ana Lab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

analab.co.uk

analab.co.uk

190 ms

www.scientificlabs.co.uk

www.scientificlabs.co.uk

861 ms

gtm.js

gtm.js

66 ms

fontawesome53f5fa4529.js

fontawesome53f5fa4529.js

221 ms

jquery.min.js

jquery.min.js

298 ms

foundation.min.js

foundation.min.js

383 ms

whirl.min.js

whirl.min.js

309 ms

foundation.min.css

foundation.min.css

425 ms

bundle.min.css

bundle.min.css

458 ms

jquery.modal.min.js

jquery.modal.min.js

310 ms

jquery.lazy.min.js

jquery.lazy.min.js

373 ms

addressControlScripts.js

addressControlScripts.js

424 ms

mainbundle.min.js

mainbundle.min.js

489 ms

js

js

89 ms

WebResource.axd

WebResource.axd

362 ms

ScriptResource.axd

ScriptResource.axd

401 ms

ScriptResource.axd

ScriptResource.axd

418 ms

js

js

478 ms

app.js

app.js

436 ms

analytics.js

analytics.js

87 ms

homepage_options_default_placeholder.png

homepage_options_default_placeholder.png

145 ms

homepage_options_placeholders.png

homepage_options_placeholders.png

147 ms

images.ashx

images.ashx

270 ms

images.ashx

images.ashx

266 ms

images.ashx

images.ashx

266 ms

images.ashx

images.ashx

266 ms

images.ashx

images.ashx

270 ms

images.ashx

images.ashx

267 ms

images.ashx

images.ashx

268 ms

images.ashx

images.ashx

268 ms

SLSIconNewCyan.jpg

SLSIconNewCyan.jpg

270 ms

icon-service-652.jpg

icon-service-652.jpg

271 ms

icon-case-652.jpg

icon-case-652.jpg

372 ms

icon-sustainability-652.jpg

icon-sustainability-652.jpg

372 ms

icon-international-652.jpg

icon-international-652.jpg

372 ms

icon-employment-652.jpg

icon-employment-652.jpg

374 ms

featured_promotions_placeholder.png

featured_promotions_placeholder.png

373 ms

key_suppliers_placeholder.png

key_suppliers_placeholder.png

374 ms

roboto-regular-webfont.woff

roboto-regular-webfont.woff

327 ms

logo-lg.gif

logo-lg.gif

317 ms

trolly-sm.gif

trolly-sm.gif

353 ms

magnify.png

magnify.png

355 ms

promo-left-btn-blue.png

promo-left-btn-blue.png

289 ms

promo-right-btn-blue.png

promo-right-btn-blue.png

291 ms

call-out__left.svg

call-out__left.svg

329 ms

call-out__right.svg

call-out__right.svg

331 ms

SLS-Testimonials-Strip.jpg

SLS-Testimonials-Strip.jpg

339 ms

left-quote.png

left-quote.png

338 ms

right-quote.png

right-quote.png

339 ms

js

js

110 ms

din-regular-webfont.woff

din-regular-webfont.woff

205 ms

din-pro.otf

din-pro.otf

271 ms

roboto-medium-webfont.woff

roboto-medium-webfont.woff

296 ms

din-pro-medium.otf

din-pro-medium.otf

359 ms

roboto-bold-webfont.woff

roboto-bold-webfont.woff

296 ms

back-to-top.png

back-to-top.png

274 ms

footer-logo.gif

footer-logo.gif

276 ms

icon-fb.jpg

icon-fb.jpg

330 ms

icon-tw.jpg

icon-tw.jpg

329 ms

icon-in.png

icon-in.png

360 ms

icon-yt.png

icon-yt.png

360 ms

icon-ecologi-bg.png

icon-ecologi-bg.png

361 ms

Accessibility Review

analab.co.uk accessibility score

77

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-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

ARIA toggle fields do not have accessible names

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

Image elements do not have [alt] attributes

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

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

Best Practices

analab.co.uk best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

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

analab.co.uk SEO score

70

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 doesn't use 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 Analab.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 Analab.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

analab.co.uk

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