Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

pla.co.uk

Port of London Authority

Page Load Speed

4.6 sec in total

First Response

1.3 sec

Resources Loaded

2.9 sec

Page Rendered

391 ms

pla.co.uk screenshot

About Website

Welcome to pla.co.uk homepage info - get ready to check Pla best content for Chile right away, or after learning these important things about pla.co.uk

The Port of London Authority's operations cover 95 miles of the River Thames. The Port of London Authority works to keep commercial and leisure users safe, protects and enhances the environment and pr...

Visit pla.co.uk

Key Findings

We analyzed Pla.co.uk page load time and found that the first response time was 1.3 sec and then it took 3.3 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

pla.co.uk performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value340 ms

75/100

30%

CLS (Cumulative Layout Shift)

Value0.048

99/100

15%

TTI (Time to Interactive)

Value17.3 s

4/100

10%

Network Requests Diagram

pla.co.uk

1325 ms

font-awesome.min.css

248 ms

jquery.selectbox.css

154 ms

site.min.css

474 ms

datepicker.css

154 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 78% of them (40 requests) were addressed to the original Pla.co.uk, 6% (3 requests) were made to Pbs.twimg.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Pla.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 576.4 kB (38%)

Content Size

1.5 MB

After Optimization

943.0 kB

In fact, the total size of Pla.co.uk main page is 1.5 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. 40% of websites need less resources to load. Images take 791.6 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 61.0 kB

  • Original 73.0 kB
  • After minification 60.0 kB
  • After compression 12.0 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 13.0 kB, which is 18% 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 61.0 kB or 84% of the original size.

Image Optimization

-3%

Potential reduce by 24.9 kB

  • Original 791.6 kB
  • After minification 766.7 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. Pla images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 370.0 kB

  • Original 511.0 kB
  • After minification 497.7 kB
  • After compression 141.0 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 370.0 kB or 72% of the original size.

CSS Optimization

-84%

Potential reduce by 120.5 kB

  • Original 143.8 kB
  • After minification 141.9 kB
  • After compression 23.3 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. Pla.co.uk needs all CSS files to be minified and compressed as it can save up to 120.5 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (33%)

Requests Now

49

After Optimization

33

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pla. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

pla.co.uk accessibility score

69

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[accesskey] values are not unique

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

pla.co.uk best practices score

67

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

SEO Factors

pla.co.uk SEO score

77

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pla.co.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Pla.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 data is detected on the main page of Pla. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: