Access nettam.jp. ネットTAM：アートマネジメント総合情報サイト

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.175

69/100

15%

TTI (Time to Interactive)

Value11.9 s

17/100

10%

nettam.jp

916 ms

www.nettam.jp

1082 ms

js

78 ms

style.css

1516 ms

fontawesome.all.min.css

1030 ms

Our browser made a total of 117 requests to load all elements on the main page. We found that 91% of them (107 requests) were addressed to the original Nettam.jp, 2% (2 requests) were made to Connect.facebook.net and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Nettam.jp.

Content Size

10.5 MB

After Optimization

10.2 MB

In fact, the total size of Nettam.jp main page is 10.5 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 10.3 MB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 155.2 kB

Original 171.2 kB
After minification 90.4 kB
After compression 15.9 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 80.8 kB, which is 47% 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 155.2 kB or 91% of the original size.

Image Optimization

-2%

Potential reduce by 219.7 kB

Original 10.3 MB
After minification 10.1 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. Nettam images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 50 B

Original 53.9 kB
After minification 53.9 kB
After compression 53.9 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.

Requests Now

113

After Optimization

104

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nettam. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts 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 are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

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

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 Nettam.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 Nettam.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

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

ネットTAM：アートマネジメント総合情報サイト

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

nettam.jp

www.nettam.jp

js

style.css

fontawesome.all.min.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

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Accessibility Review

Accessibility Issues

Best Practices

Areas of Improvement

SEO Factors

Search Engine Optimization Advices

Language and Encoding

Language Detected

Language Claimed

Encoding

Social Sharing Optimization

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