Tools & Wizards About Us

Report Summary

  • 13

    Performance

    Renders faster than
    25% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

knowhow.com

Help & Services - Installation, Delivery & Repairs | Currys

Page Load Speed

3.3 sec in total

First Response

532 ms

Resources Loaded

2.6 sec

Page Rendered

171 ms

About Website

Click here to check amazing Knowhow content for United Kingdom. Otherwise, check out these important facts you probably never knew about knowhow.com

Whether you need repair services for your fridge or installation for some tech at home. We can help you with any enquiry, browse our buying guides and more.

Visit knowhow.com

Key Findings

We analyzed Knowhow.com page load time and found that the first response time was 532 ms and then it took 2.8 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

knowhow.com performance score

13

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

10/100

10%

LCP (Largest Contentful Paint)

Value11.8 s

0/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value5,220 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.171

70/100

15%

TTI (Time to Interactive)

Value20.1 s

2/100

10%

Network Requests Diagram

knowhow.com

532 ms

WebResource.axd

209 ms

main.css

490 ms

home.css

337 ms

system.css

266 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 93% of them (39 requests) were addressed to the original Knowhow.com, 5% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Knowhow.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 238.7 kB (34%)

Content Size

700.1 kB

After Optimization

461.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Knowhow.com main page is 700.1 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. Only 10% of websites need less resources to load. Images take 389.8 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 46.4 kB

  • Original 53.9 kB
  • After minification 36.5 kB
  • After compression 7.5 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 17.4 kB, which is 32% 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 46.4 kB or 86% of the original size.

Image Optimization

-4%

Potential reduce by 16.5 kB

  • Original 389.8 kB
  • After minification 373.3 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. Knowhow images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 123.2 kB

  • Original 191.7 kB
  • After minification 191.0 kB
  • After compression 68.6 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 123.2 kB or 64% of the original size.

CSS Optimization

-81%

Potential reduce by 52.6 kB

  • Original 64.7 kB
  • After minification 52.3 kB
  • After compression 12.1 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. Knowhow.com needs all CSS files to be minified and compressed as it can save up to 52.6 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (55%)

Requests Now

40

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Knowhow. 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 from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

knowhow.com accessibility score

72

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

High

Some elements have a [tabindex] value greater than 0

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

High

<object> elements do not have alternate text

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.

Best Practices

knowhow.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

knowhow.com SEO score

76

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 Knowhow.com 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 Knowhow.com 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 Knowhow. 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: