Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

otc.co.uk

UKAS accredited fibre optic, photometric and electronic calibration

Page Load Speed

2.1 sec in total

First Response

130 ms

Resources Loaded

1.4 sec

Page Rendered

530 ms

otc.co.uk screenshot

About Website

Click here to check amazing Otc content. Otherwise, check out these important facts you probably never knew about otc.co.uk

Industry leading calibration of fibre optic, photometric and electronic test equipment. Based in Bradford, West Yorkshire

Visit otc.co.uk

Key Findings

We analyzed Otc.co.uk page load time and found that the first response time was 130 ms and then it took 1.9 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

otc.co.uk performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

47/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value1,250 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.8 s

66/100

10%

Network Requests Diagram

otc.co.uk

130 ms

index.php

566 ms

bootstrap.min.css

192 ms

business-frontpage.css

97 ms

jquery-1.10.2.min.js

247 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 45% of them (17 requests) were addressed to the original Otc.co.uk, 11% (4 requests) were made to Google-analytics.com and 8% (3 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (566 ms) belongs to the original domain Otc.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 308.7 kB (47%)

Content Size

661.1 kB

After Optimization

352.4 kB

In fact, the total size of Otc.co.uk main page is 661.1 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. 35% of websites need less resources to load. Javascripts take 268.9 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 19.7 kB

  • Original 26.8 kB
  • After minification 22.5 kB
  • After compression 7.1 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 4.3 kB, which is 16% 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 19.7 kB or 74% of the original size.

Image Optimization

-2%

Potential reduce by 3.7 kB

  • Original 247.2 kB
  • After minification 243.5 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. Otc images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 186.5 kB

  • Original 268.9 kB
  • After minification 240.5 kB
  • After compression 82.4 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 186.5 kB or 69% of the original size.

CSS Optimization

-84%

Potential reduce by 98.7 kB

  • Original 118.2 kB
  • After minification 117.7 kB
  • After compression 19.5 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. Otc.co.uk needs all CSS files to be minified and compressed as it can save up to 98.7 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (44%)

Requests Now

34

After Optimization

19

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Otc. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

otc.co.uk accessibility score

95

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.

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

otc.co.uk best practices score

75

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

SEO Factors

otc.co.uk SEO score

90

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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 Otc.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 Otc.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

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