Report Summary

  • 27

    Performance

    Renders faster than
    47% of other websites

  • 44

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

dolphin-gt.co.jp

アコースティックギター・クラシックギター・エレキギター ・ウクレレ・マンドリンのプロショップ店 ドルフィンギターズ

Page Load Speed

13.6 sec in total

First Response

1.4 sec

Resources Loaded

11.2 sec

Page Rendered

1 sec

dolphin-gt.co.jp screenshot

About Website

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

Visit dolphin-gt.co.jp

Key Findings

We analyzed Dolphin-gt.co.jp page load time and found that the first response time was 1.4 sec and then it took 12.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

dolphin-gt.co.jp performance score

27

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value10.1 s

0/100

25%

SI (Speed Index)

Value11.7 s

4/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value14.5 s

9/100

10%

Network Requests Diagram

www.dolphin-gt.co.jp

1354 ms

style.css

201 ms

all.js

71 ms

style.min.css

399 ms

styles.css

526 ms

Our browser made a total of 202 requests to load all elements on the main page. We found that 83% of them (168 requests) were addressed to the original Dolphin-gt.co.jp, 7% (15 requests) were made to Youtube.com and 4% (8 requests) were made to Jnn-pa.googleapis.com. The less responsive or slowest element that took the longest time to load (2.7 sec) belongs to the original domain Dolphin-gt.co.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 956.1 kB (10%)

Content Size

9.8 MB

After Optimization

8.8 MB

In fact, the total size of Dolphin-gt.co.jp main page is 9.8 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. Only a small number of websites need less resources to load. Images take 8.6 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 209.8 kB

  • Original 235.4 kB
  • After minification 233.3 kB
  • After compression 25.6 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 209.8 kB or 89% of the original size.

Image Optimization

-8%

Potential reduce by 710.0 kB

  • Original 8.6 MB
  • After minification 7.9 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. Dolphin Gt images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 26.4 kB

  • Original 741.7 kB
  • After minification 741.7 kB
  • After compression 715.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-6%

Potential reduce by 9.9 kB

  • Original 153.2 kB
  • After minification 153.0 kB
  • After compression 143.3 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. Dolphin-gt.co.jp has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 40 (20%)

Requests Now

199

After Optimization

159

The browser has sent 199 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dolphin Gt. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dolphin-gt.co.jp accessibility score

44

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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 valid value for its [lang] attribute.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

dolphin-gt.co.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

dolphin-gt.co.jp SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    JP

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dolphin-gt.co.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it does not match the claimed language. Our system also found out that Dolphin-gt.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

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