Access orion-diving.jp. 沖縄ダイビングツアー・ダイビングライセンスツアー

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value11.2 s

0/100

25%

SI (Speed Index)

Value11.9 s

4/100

10%

TBT (Total Blocking Time)

Value1,640 ms

12/100

30%

CLS (Cumulative Layout Shift)

Value0.295

40/100

15%

TTI (Time to Interactive)

Value18.1 s

3/100

10%

orion-diving.jp

365 ms

orion-diving.jp

682 ms

www.orion-diving.jp

346 ms

www.orion-diving.jp

1023 ms

reset.css

333 ms

Our browser made a total of 111 requests to load all elements on the main page. We found that 84% of them (93 requests) were addressed to the original Orion-diving.jp, 4% (4 requests) were made to Googletagmanager.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source Adobe.com.

Content Size

4.6 MB

After Optimization

2.6 MB

In fact, the total size of Orion-diving.jp main page is 4.6 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. 70% of websites need less resources to load. Images take 4.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 55.9 kB

Original 65.5 kB
After minification 37.9 kB
After compression 9.6 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. This page needs HTML code to be minified as it can gain 27.6 kB, which is 42% 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 55.9 kB or 85% of the original size.

Image Optimization

-43%

Potential reduce by 1.9 MB

Original 4.4 MB
After minification 2.6 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. Obviously, Orion Diving needs image optimization as it can save up to 1.9 MB or 43% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-60%

Potential reduce by 35.2 kB

Original 58.5 kB
After minification 58.0 kB
After compression 23.2 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 35.2 kB or 60% of the original size.

CSS Optimization

-83%

Potential reduce by 15.6 kB

Original 18.8 kB
After minification 14.3 kB
After compression 3.2 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. Orion-diving.jp needs all CSS files to be minified and compressed as it can save up to 15.6 kB or 83% of the original size.

Requests Now

102

After Optimization

The browser has sent 102 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Orion Diving. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 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 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

Form elements do not have associated labels

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

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

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

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 Orion-diving.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 Orion-diving.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

orion-diving.jp

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

沖縄ダイビングツアー・ダイビングライセンスツアー｜沖縄ダイビングツアー専門店オリオンツアー

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

orion-diving.jp

orion-diving.jp

www.orion-diving.jp

www.orion-diving.jp

reset.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

orion-diving.jp

orion-diving.jp

www.orion-diving.jp

www.orion-diving.jp

reset.css

common.css

smartRollover.js

gotop.js

bookmark.js

smartRollover.js

gotop.js

widget.js

gtm.js

get_flash_player.gif

header_2.jpg

logo.jpg

btn_header01_off.jpg

btn_header02_off.jpg

gnavi_bg.jpg

gnavi.jpg

bg_contents_inner.jpg

bg_contents_top.jpg

bg_contents_btm.jpg

bg_contents.jpg

bg_contents_lower.jpg

bg_topics.jpg

h4_topics.png

bg_topics_dl.gif

ico_white_arrow.png

img_topics01.png

img_topics02.png

bg_tuor.jpg

h4_shop_tuor.png

img_tuor_tab05_on.png

img_tuor_tab06_off.png

img_tuor_tab07_off.png

img_tuor_tab08_off.png

bg_tour_cell.jpg

ico_arrow.jpg

img_line.gif

bg_photo.png

shop_name1.jpg

shop_name2.jpg