5.4 sec in total
1.3 sec
3.8 sec
338 ms
Click here to check amazing JACK B content for Japan. Otherwise, check out these important facts you probably never knew about jack-b.jp
生地・布素材店「JACKB」では良い布をより安くお届けしています
Visit jack-b.jpWe analyzed Jack-b.jp page load time and found that the first response time was 1.3 sec and then it took 4.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
jack-b.jp performance score
name
value
score
weighting
Value1.7 s
91/100
10%
Value9.6 s
0/100
25%
Value4.7 s
68/100
10%
Value490 ms
59/100
30%
Value0.028
100/100
15%
Value9.7 s
28/100
10%
1336 ms
502 ms
74 ms
73 ms
769 ms
Our browser made a total of 68 requests to load all elements on the main page. We found that 25% of them (17 requests) were addressed to the original Jack-b.jp, 28% (19 requests) were made to Static.xx.fbcdn.net and 15% (10 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Jack-b.jp.
Page size can be reduced by 79.6 kB (10%)
790.9 kB
711.3 kB
In fact, the total size of Jack-b.jp main page is 790.9 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. 45% of websites need less resources to load. Images take 629.5 kB which makes up the majority of the site volume.
Potential reduce by 28.3 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. This page needs HTML code to be minified as it can gain 5.7 kB, which is 15% 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 28.3 kB or 76% of the original size.
Potential reduce by 2.4 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. JACK B images are well optimized though.
Potential reduce by 32.1 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 32.1 kB or 31% of the original size.
Potential reduce by 16.7 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. Jack-b.jp needs all CSS files to be minified and compressed as it can save up to 16.7 kB or 85% of the original size.
Number of requests can be reduced by 27 (42%)
65
38
The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JACK B. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
jack-b.jp
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font.css
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jack-b.jp accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
jack-b.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Browser errors were logged to the console
jack-b.jp SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
JA
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jack-b.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 Jack-b.jp 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.
jack-b.jp
Open Graph description is not detected on the main page of JACK B. 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: