Access lensup.jp. コンタクトレンズ通販のレンズアップ

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value15.0 s

1/100

10%

TBT (Total Blocking Time)

Value700 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0.378

28/100

15%

TTI (Time to Interactive)

Value21.4 s

1/100

10%

lensup.jp

300 ms

www.lensup.jp

1441 ms

reset.css

437 ms

pc_aui_components.css

872 ms

style.css

1022 ms

Our browser made a total of 105 requests to load all elements on the main page. We found that 94% of them (99 requests) were addressed to the original Lensup.jp, 2% (2 requests) were made to Googletagmanager.com and 1% (1 request) were made to Static.criteo.net. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Lensup.jp.

Content Size

1.8 MB

After Optimization

1.4 MB

In fact, the total size of Lensup.jp main page is 1.8 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. 45% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 82.8 kB

Original 95.5 kB
After minification 78.6 kB
After compression 12.8 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 17.0 kB, which is 18% 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 82.8 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 3.3 kB

Original 1.3 MB
After minification 1.3 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. Lensup images are well optimized though.

JavaScript Optimization

-58%

Potential reduce by 73.4 kB

Original 125.8 kB
After minification 119.7 kB
After compression 52.3 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 73.4 kB or 58% of the original size.

CSS Optimization

-88%

Potential reduce by 306.0 kB

Original 346.6 kB
After minification 275.4 kB
After compression 40.6 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. Lensup.jp needs all CSS files to be minified and compressed as it can save up to 306.0 kB or 88% of the original size.

Requests Now

103

After Optimization

The browser has sent 103 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lensup. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 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 legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

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

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links do not have descriptive text

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

High

Links are not crawlable

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 uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lensup.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Lensup.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

lensup.jp

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

Report Summary

Performance

Accessibility

Best Practices

SEO

コンタクトレンズ通販のレンズアップ

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

lensup.jp

www.lensup.jp

reset.css

pc_aui_components.css

style.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

lensup.jp

www.lensup.jp

reset.css

pc_aui_components.css

style.css

pc.css

common.js

sliderTop.css

jquery-1.7.2.min.js

slider.js

tap_copy.js

old_browser_alert.css

old_browser_alert.js

ld.js

js

gtm.js

utility.css

utility_responsive.css

body_bc.jpg

bnr_header_wave_new.gif

header_logo.gif

header_navi_top.gif

header_navi_howto.gif

header_navi_payment.gif

header_navi_my.gif

header_navi_cart.gif

header_list_jj.gif

header_list_line.gif

header_list_cp.gif

header_list_bl.gif

header_list_cb.gif

header_list_sc.gif

header_list_ar.gif

header_list_sd.gif

header_list_1day.gif

header_list_2week.gif

header_list_toric.gif

header_list_bifocal.gif

header_list_color.gif

header_list_glasses.gif

header_list_subsc.gif

left_glassess_salesstart.jpg

left_premium_new.jpg