Access bigweb.co.jp. BIGWEB

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value18.8 s

0/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value280 ms

80/100

30%

CLS (Cumulative Layout Shift)

Value0.632

9/100

15%

TTI (Time to Interactive)

Value5.8 s

66/100

10%

bigweb.co.jp

418 ms

www.bigweb.co.jp

456 ms

satellite.css.pagespeed.ce.YgXH3rC1Qj.css

10 ms

ver2.css.pagespeed.ce.41wUV-cE84.css

8 ms

bigweb.css.pagespeed.ce.Nr_KgMegGb.css

30 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 93% of them (68 requests) were addressed to the original Bigweb.co.jp, 3% (2 requests) were made to Stats.g.doubleclick.net and 1% (1 request) were made to Widgets.twimg.com. The less responsive or slowest element that took the longest time to load (630 ms) belongs to the original domain Bigweb.co.jp.

Content Size

439.7 kB

After Optimization

345.3 kB

In fact, the total size of Bigweb.co.jp main page is 439.7 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. 40% of websites need less resources to load. Images take 310.6 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 59.6 kB

Original 71.3 kB
After minification 71.2 kB
After compression 11.7 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 59.6 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 82 B

Original 310.6 kB
After minification 310.5 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. BIGWEB images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 27 B

Original 17.1 kB
After minification 17.1 kB
After compression 17.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-85%

Potential reduce by 34.8 kB

Original 40.7 kB
After minification 30.0 kB
After compression 6.0 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. Bigweb.co.jp needs all CSS files to be minified and compressed as it can save up to 34.8 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 71 CSS, Javascripts, AJAX and image requests in order to completely render the main page of BIGWEB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts 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-*] attributes do not match their roles

High

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

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA toggle fields do not have accessible names

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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

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

N/A
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bigweb.co.jp can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Bigweb.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

bigweb.co.jp

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

BIGWEB

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

bigweb.co.jp

www.bigweb.co.jp

satellite.css.pagespeed.ce.YgXH3rC1Qj.css

ver2.css.pagespeed.ce.41wUV-cE84.css

bigweb.css.pagespeed.ce.Nr_KgMegGb.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

bigweb.co.jp

www.bigweb.co.jp

satellite.css.pagespeed.ce.YgXH3rC1Qj.css

ver2.css.pagespeed.ce.41wUV-cE84.css

bigweb.css.pagespeed.ce.Nr_KgMegGb.css

widget.js

dc.js

body_bg.gif

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