Tools & Wizards About Us
as-tetra.info screenshot

Report Summary

  • 71

    Performance

    Renders faster than
    81% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

as-tetra.info

art space tetra

Page Load Speed

3.4 sec in total

First Response

1 sec

Resources Loaded

2.2 sec

Page Rendered

134 ms

as-tetra.info screenshot

About Website

Welcome to as-tetra.info homepage info - get ready to check As Tetra best content right away, or after learning these important things about as-tetra.info

art space tetra is an alternative space in Japan, since 2004.

Visit as-tetra.info

Key Findings

We analyzed As-tetra.info page load time and found that the first response time was 1 sec and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

as-tetra.info performance score

71

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value4.6 s

71/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.211

59/100

15%

TTI (Time to Interactive)

Value4.0 s

88/100

10%

Network Requests Diagram

as-tetra.info

1031 ms

tetra_base.css

677 ms

tetra_jp.css

516 ms

jquery.min.js

26 ms

jquery.masonry.js

516 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 75% of them (21 requests) were addressed to the original As-tetra.info, 7% (2 requests) were made to Google.com and 7% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain As-tetra.info.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.7 kB (22%)

Content Size

350.2 kB

After Optimization

274.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of As-tetra.info main page is 350.2 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. 20% of websites need less resources to load. Images take 230.9 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 20.2 kB

  • Original 25.4 kB
  • After minification 23.1 kB
  • After compression 5.2 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 20.2 kB or 80% of the original size.

Image Optimization

-11%

Potential reduce by 25.4 kB

  • Original 230.9 kB
  • After minification 205.6 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. Obviously, As Tetra needs image optimization as it can save up to 25.4 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-20%

Potential reduce by 15.3 kB

  • Original 75.7 kB
  • After minification 64.2 kB
  • After compression 60.4 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 15.3 kB or 20% of the original size.

CSS Optimization

-82%

Potential reduce by 14.8 kB

  • Original 18.1 kB
  • After minification 14.3 kB
  • After compression 3.3 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. As-tetra.info needs all CSS files to be minified and compressed as it can save up to 14.8 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (31%)

Requests Now

26

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of As Tetra. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

as-tetra.info

as-tetra.info

1031 ms

tetra_base.css

tetra_base.css

677 ms

tetra_jp.css

tetra_jp.css

516 ms

jquery.min.js

jquery.min.js

26 ms

jquery.masonry.js

jquery.masonry.js

516 ms

jquery.cookie.js

jquery.cookie.js

517 ms

jquery.styleswichter.js

jquery.styleswichter.js

541 ms

property.js

property.js

560 ms

4b70a1e8fd.js

4b70a1e8fd.js

57 ms

brand

brand

9 ms

toggle_menu.js

toggle_menu.js

549 ms

brandjs.js

brandjs.js

15 ms

bg_45w50.png

bg_45w50.png

165 ms

tetra_logo09w.png

tetra_logo09w.png

165 ms

f_logo_RGB-Blue_100.png

f_logo_RGB-Blue_100.png

165 ms

Twitter_Social_Icon_Circle_Color.png

Twitter_Social_Icon_Circle_Color.png

187 ms

Instagram_AppIcon_Aug2017.png

Instagram_AppIcon_Aug2017.png

652 ms

youtube_social_circle_red.png

youtube_social_circle_red.png

530 ms

dest128blue.png

dest128blue.png

328 ms

bg_45bk50.png

bg_45bk50.png

328 ms

icon_update.gif

icon_update.gif

330 ms

1385.jpg

1385.jpg

597 ms

1384.jpg

1384.jpg

528 ms

1383.jpg

1383.jpg

691 ms

cl.gif

cl.gif

494 ms

branding.png

branding.png

31 ms

ga.js

ga.js

13 ms

__utm.gif

__utm.gif

11 ms

Accessibility Review

as-tetra.info accessibility score

49

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Names and labels

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.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

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

Impact

Issue

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.

Best Practices

as-tetra.info best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

as-tetra.info SEO score

83

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses 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 As-tetra.info 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 As-tetra.info 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

as-tetra.info

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