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webmap.o2.co.uk screenshot

Report Summary

  • 5

    Performance

    Renders faster than
    21% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

webmap.o2.co.uk

O2 Network Coverage Checker | 2G, 3G, 4G and 5G Coverage

Page Load Speed

601 ms in total

First Response

41 ms

Resources Loaded

508 ms

Page Rendered

52 ms

webmap.o2.co.uk screenshot

About Website

Click here to check amazing Webmap O2 content for United Kingdom. Otherwise, check out these important facts you probably never knew about webmap.o2.co.uk

Check your 2G, 3G, 4G and 5G network coverage with the O2 Coverage Checker. Includes call and mobile internet reception – as well as your nearest O2 Wifi hotspots.

Visit webmap.o2.co.uk

Key Findings

We analyzed Webmap.o2.co.uk page load time and found that the first response time was 41 ms and then it took 560 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster. This domain responded with an error, which can significantly jeopardize Webmap.o2.co.uk rating and web reputation

Performance Metrics

webmap.o2.co.uk performance score

5

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.7 s

0/100

25%

SI (Speed Index)

Value17.1 s

0/100

10%

TBT (Total Blocking Time)

Value1,640 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.678

8/100

15%

TTI (Time to Interactive)

Value26.8 s

0/100

10%

Network Requests Diagram

coveragechecker

41 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Webmap.o2.co.uk and no external sources were called. The less responsive or slowest element that took the longest time to load (41 ms) relates to the external source O2.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 947.5 kB (65%)

Content Size

1.5 MB

After Optimization

521.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Webmap.o2.co.uk main page is 1.5 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Javascripts take 814.8 kB which makes up the majority of the site volume.

HTML Optimization

-30%

Potential reduce by 30 B

  • Original 101 B
  • After minification 99 B
  • After compression 71 B

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 30 B or 30% of the original size.

Image Optimization

-8%

Potential reduce by 18.0 kB

  • Original 236.8 kB
  • After minification 218.8 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. Webmap O2 images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 562.4 kB

  • Original 814.8 kB
  • After minification 792.2 kB
  • After compression 252.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 562.4 kB or 69% of the original size.

CSS Optimization

-88%

Potential reduce by 367.1 kB

  • Original 416.7 kB
  • After minification 356.5 kB
  • After compression 49.7 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. Webmap.o2.co.uk needs all CSS files to be minified and compressed as it can save up to 367.1 kB or 88% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

coveragechecker

coveragechecker

41 ms

Accessibility Review

webmap.o2.co.uk accessibility score

85

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

button, link, and menuitem elements do not have accessible names.

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Definition list items are not wrapped in <dl> elements

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

webmap.o2.co.uk best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

webmap.o2.co.uk SEO score

81

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

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

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Webmap.o2.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 Webmap.o2.co.uk main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

webmap.o2.co.uk

Open Graph description is not detected on the main page of Webmap O2. 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: