Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

dietnavi.com

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Page Load Speed

11.6 sec in total

First Response

460 ms

Resources Loaded

10.9 sec

Page Rendered

296 ms

dietnavi.com screenshot

About Website

Welcome to dietnavi.com homepage info - get ready to check Dietnavi best content for Japan right away, or after learning these important things about dietnavi.com

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Key Findings

We analyzed Dietnavi.com page load time and found that the first response time was 460 ms and then it took 11.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

dietnavi.com performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

20/100

25%

SI (Speed Index)

Value10.9 s

6/100

10%

TBT (Total Blocking Time)

Value940 ms

30/100

30%

CLS (Cumulative Layout Shift)

Value0.379

28/100

15%

TTI (Time to Interactive)

Value24.6 s

0/100

10%

Network Requests Diagram

460 ms

reset.css

297 ms

common.css

309 ms

parts.css

481 ms

top.css

363 ms

Our browser made a total of 392 requests to load all elements on the main page. We found that 17% of them (66 requests) were addressed to the original Dietnavi.com, 5% (19 requests) were made to Bh.contextweb.com and 3% (13 requests) were made to Aladdin.genieesspv.jp. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Images.xmax.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.7 MB (50%)

Content Size

3.4 MB

After Optimization

1.7 MB

In fact, the total size of Dietnavi.com main page is 3.4 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. 60% of websites need less resources to load. Javascripts take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 130.3 kB

  • Original 169.6 kB
  • After minification 156.2 kB
  • After compression 39.3 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. 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 130.3 kB or 77% of the original size.

Image Optimization

-10%

Potential reduce by 115.4 kB

  • Original 1.2 MB
  • After minification 1.1 MB

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. Dietnavi images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 1.1 MB

  • Original 1.6 MB
  • After minification 1.5 MB
  • After compression 468.2 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 1.1 MB or 70% of the original size.

CSS Optimization

-77%

Potential reduce by 326.6 kB

  • Original 422.4 kB
  • After minification 336.3 kB
  • After compression 95.7 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. Dietnavi.com needs all CSS files to be minified and compressed as it can save up to 326.6 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 260 (73%)

Requests Now

358

After Optimization

98

The browser has sent 358 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dietnavi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 78 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dietnavi.com accessibility score

79

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

[aria-*] attributes do not match their roles

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.

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

<frame> or <iframe> elements do not have a title

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

dietnavi.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

dietnavi.com SEO score

85

Search Engine Optimization Advices

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    EUC-JP

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dietnavi.com can be misinterpreted by Google and other search engines. Our service has detected that Japanese 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 Dietnavi.com main page’s claimed encoding is euc-jp. 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

Open Graph data is detected on the main page of Dietnavi. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: