Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

sigma-onlineshop.jp

SIGMAオンラインショップ

Page Load Speed

3 sec in total

First Response

531 ms

Resources Loaded

2.4 sec

Page Rendered

102 ms

sigma-onlineshop.jp screenshot

About Website

Click here to check amazing Sigma Onlineshop content for Japan. Otherwise, check out these important facts you probably never knew about sigma-onlineshop.jp

シグマオンラインショップのページです。

Visit sigma-onlineshop.jp

Key Findings

We analyzed Sigma-onlineshop.jp page load time and found that the first response time was 531 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

sigma-onlineshop.jp performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

8/100

10%

LCP (Largest Contentful Paint)

Value13.7 s

0/100

25%

SI (Speed Index)

Value12.8 s

3/100

10%

TBT (Total Blocking Time)

Value430 ms

64/100

30%

CLS (Cumulative Layout Shift)

Value0.151

75/100

15%

TTI (Time to Interactive)

Value12.5 s

14/100

10%

Network Requests Diagram

sigma-onlineshop.jp

531 ms

header.htm

177 ms

index_f.htm

622 ms

header.css

169 ms

crtbtn.css

316 ms

Our browser made a total of 32 requests to load all elements on the main page. We found that all of those requests were addressed to Sigma-onlineshop.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Sigma-onlineshop.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 15.1 kB (14%)

Content Size

106.2 kB

After Optimization

91.2 kB

In fact, the total size of Sigma-onlineshop.jp main page is 106.2 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 5% of websites need less resources to load. Images take 99.9 kB which makes up the majority of the site volume.

HTML Optimization

-41%

Potential reduce by 410 B

  • Original 999 B
  • After minification 990 B
  • After compression 589 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 410 B or 41% of the original size.

Image Optimization

-10%

Potential reduce by 10.5 kB

  • Original 99.9 kB
  • After minification 89.4 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. Sigma Onlineshop images are well optimized though.

CSS Optimization

-78%

Potential reduce by 4.2 kB

  • Original 5.3 kB
  • After minification 4.1 kB
  • After compression 1.2 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. Sigma-onlineshop.jp needs all CSS files to be minified and compressed as it can save up to 4.2 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (31%)

Requests Now

29

After Optimization

20

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sigma Onlineshop. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

sigma-onlineshop.jp accessibility score

83

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.

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

sigma-onlineshop.jp best practices score

75

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

Page has valid source maps

SEO Factors

sigma-onlineshop.jp SEO score

76

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sigma-onlineshop.jp 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 Sigma-onlineshop.jp main page’s claimed encoding is shift_jis. 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 description is not detected on the main page of Sigma Onlineshop. 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: