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6

Performance

Renders faster than
21% of other websites
68

Accessibility

Visual factors better than
that of 33% of websites
75

Best Practices

More advanced features
available than in
35% of websites
60

SEO

Google-friendlier than
23% of websites

First Response

588 ms

Resources Loaded

8.5 sec

Page Rendered

1.6 sec

costante.co.jp screenshot

About Website

Welcome to costante.co.jp homepage info - get ready to check Costante best content right away, or after learning these important things about costante.co.jp

国内での小ロット生産にこだわり、商品の隅々にまで情熱を注ぎ込む丁寧なモノ造り。日本の伝統的な素材や技術と協力して意欲的に展開されるコラボレーションアイテム。時計を熟知したコレクターへオススメしたい本物を企画して製造しています。

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Key Findings

We analyzed Costante.co.jp page load time and found that the first response time was 588 ms and then it took 10.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value34.6 s

0/100

25%

SI (Speed Index)

Value10.8 s

7/100

10%

TBT (Total Blocking Time)

Value1,430 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0.863

4/100

15%

TTI (Time to Interactive)

Value19.1 s

3/100

10%

costante.co.jp

588 ms

www.costante.co.jp

854 ms

sps_common.css

335 ms

default.css

496 ms

jquery.min.js

25 ms

Our browser made a total of 374 requests to load all elements on the main page. We found that 53% of them (197 requests) were addressed to the original Costante.co.jp, 25% (95 requests) were made to Image1.shopserve.jp and 20% (76 requests) were made to Coby.tools. The less responsive or slowest element that took the longest time to load (1.9 sec) relates to the external source Image1.shopserve.jp.

Content Size

8.0 MB

After Optimization

7.2 MB

In fact, the total size of Costante.co.jp main page is 8.0 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. Only a small number of websites need less resources to load. Images take 7.2 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 153.4 kB

Original 179.1 kB
After minification 165.7 kB
After compression 25.7 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 153.4 kB or 86% of the original size.

Image Optimization

-5%

Potential reduce by 328.3 kB

Original 7.2 MB
After minification 6.9 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. Costante images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 355.0 kB

Original 575.4 kB
After minification 559.0 kB
After compression 220.4 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 355.0 kB or 62% of the original size.

CSS Optimization

-70%

Potential reduce by 25.8 kB

Original 36.8 kB
After minification 35.2 kB
After compression 11.1 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. Costante.co.jp needs all CSS files to be minified and compressed as it can save up to 25.8 kB or 70% of the original size.

Requests Now

372

After Optimization

343

The browser has sent 372 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Costante. 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 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

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

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Costante.co.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 Costante.co.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.

Social Sharing Optimization

costante.co.jp

Open Graph description is not detected on the main page of Costante. 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: