Access btb.co.jp. 痩身専門セルライト対策｜セルライトケアのバイオエステBTB｜

btb.co.jp screenshot

0

Performance
76

Accessibility

Visual factors better than
that of 42% of websites
58

Best Practices

More advanced features
available than in
20% of websites
67

SEO

Google-friendlier than
26% of websites

First Response

340 ms

Resources Loaded

6.6 sec

Page Rendered

1.2 sec

btb.co.jp screenshot

About Website

Welcome to btb.co.jp homepage info - get ready to check Btb best content for Japan right away, or after learning these important things about btb.co.jp

痩身専門・セルライトケアのバイオエステBTB。全国17店舗すべて駅から徒歩圏内。独自マシンによる拘りの施術をぜひご堪能ください。

Visit btb.co.jp

Key Findings

We analyzed Btb.co.jp page load time and found that the first response time was 340 ms and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value6.8 s

1/100

10%

LCP (Largest Contentful Paint)

Value42.3 s

0/100

25%

SI (Speed Index)

Value47.1 s

0/100

10%

TBT (Total Blocking Time)

Value11,320 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value2.021

0/100

15%

TTI (Time to Interactive)

Value224.2 s

0/100

10%

btb.co.jp

340 ms

www.btb.co.jp

1011 ms

gtm.js

59 ms

ytag.js

692 ms

common.css

495 ms

Our browser made a total of 212 requests to load all elements on the main page. We found that 61% of them (130 requests) were addressed to the original Btb.co.jp, 4% (9 requests) were made to Analytics.tiktok.com and 3% (7 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Btb.co.jp.

Content Size

9.2 MB

After Optimization

8.6 MB

In fact, the total size of Btb.co.jp main page is 9.2 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 8.8 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 81.7 kB

Original 101.4 kB
After minification 84.1 kB
After compression 19.7 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. This page needs HTML code to be minified as it can gain 17.3 kB, which is 17% 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 81.7 kB or 81% of the original size.

Image Optimization

-3%

Potential reduce by 288.8 kB

Original 8.8 MB
After minification 8.5 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. Btb images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 188.7 kB

Original 316.2 kB
After minification 314.0 kB
After compression 127.4 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 188.7 kB or 60% of the original size.

CSS Optimization

-54%

Potential reduce by 30.8 kB

Original 56.9 kB
After minification 46.2 kB
After compression 26.2 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. Btb.co.jp needs all CSS files to be minified and compressed as it can save up to 30.8 kB or 54% of the original size.

Requests Now

199

After Optimization

111

The browser has sent 199 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Btb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 47 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

[aria-hidden="true"] elements contain focusable descendents

These are opportunities to improve the legibility of your content.

High

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

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

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

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 Btb.co.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 Btb.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

btb.co.jp

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