Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

dietchef.co.uk

Lose weight with great food delivered | Diet Chef

Page Load Speed

2.2 sec in total

First Response

451 ms

Resources Loaded

1.6 sec

Page Rendered

164 ms

dietchef.co.uk screenshot

About Website

Welcome to dietchef.co.uk homepage info - get ready to check Diet Chef best content for United Kingdom right away, or after learning these important things about dietchef.co.uk

Want to lose weight? It's simple with Diet Chef - We give you breakfast, lunch, dinner and a snack for each day for £5.57. So you just tuck in and enjoy.

Visit dietchef.co.uk

Key Findings

We analyzed Dietchef.co.uk page load time and found that the first response time was 451 ms and then it took 1.8 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

dietchef.co.uk performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

48/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value2,700 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.591

11/100

15%

TTI (Time to Interactive)

Value17.4 s

4/100

10%

Network Requests Diagram

www.dietchef.co.uk

451 ms

bootstrap.min.css

73 ms

dc-main-style.css

87 ms

dc-main-responsive.css

68 ms

birchc.css

84 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Dietchef.co.uk, 69% (38 requests) were made to Djv49swh4vyu9.cloudfront.net and 5% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (754 ms) relates to the external source Djv49swh4vyu9.cloudfront.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 915.1 kB (66%)

Content Size

1.4 MB

After Optimization

480.6 kB

In fact, the total size of Dietchef.co.uk main page is 1.4 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. 35% of websites need less resources to load. Javascripts take 958.1 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 32.5 kB

  • Original 42.1 kB
  • After minification 37.7 kB
  • After compression 9.5 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 4.4 kB, which is 11% 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 32.5 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 4.6 kB

  • Original 143.9 kB
  • After minification 139.3 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. Diet Chef images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 667.5 kB

  • Original 958.1 kB
  • After minification 956.2 kB
  • After compression 290.6 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 667.5 kB or 70% of the original size.

CSS Optimization

-84%

Potential reduce by 210.4 kB

  • Original 251.6 kB
  • After minification 230.2 kB
  • After compression 41.2 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. Dietchef.co.uk needs all CSS files to be minified and compressed as it can save up to 210.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (59%)

Requests Now

49

After Optimization

20

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Diet Chef. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dietchef.co.uk accessibility score

76

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

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

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

dietchef.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

Page has valid source maps

SEO Factors

dietchef.co.uk SEO score

92

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

Image elements do not have [alt] attributes

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dietchef.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 Dietchef.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 Diet Chef. 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: