Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

sakuramobile.jp

Pocket WiFi & SIM Card Rental Japan - Sakura Mobile

Page Load Speed

3.2 sec in total

First Response

23 ms

Resources Loaded

2.6 sec

Page Rendered

576 ms

sakuramobile.jp screenshot

About Website

Welcome to sakuramobile.jp homepage info - get ready to check Sakura Mobile best content for Japan right away, or after learning these important things about sakuramobile.jp

Japan Pocket WiFi & SIM Cards plans from Sakura Mobile. Perfect for visitors traveling in Japan. Rent short-term Prepaid Data SIM Cards and Pocket WiFi at affordable prices!

Visit sakuramobile.jp

Key Findings

We analyzed Sakuramobile.jp page load time and found that the first response time was 23 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

sakuramobile.jp performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value8.4 s

2/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value2,620 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value16.4 s

5/100

10%

Network Requests Diagram

sakuramobile.jp

23 ms

sakuramobile.jp

28 ms

www.sakuramobile.jp

1049 ms

style.min.css

140 ms

css2

163 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 63% of them (53 requests) were addressed to the original Sakuramobile.jp, 7% (6 requests) were made to C0.wp.com and 7% (6 requests) were made to Staticw2.yotpo.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Sakuramobile.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (24%)

Content Size

5.0 MB

After Optimization

3.8 MB

In fact, the total size of Sakuramobile.jp main page is 5.0 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 95.7 kB

  • Original 114.4 kB
  • After minification 109.7 kB
  • After compression 18.8 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 95.7 kB or 84% of the original size.

Image Optimization

-22%

Potential reduce by 1.0 MB

  • Original 4.6 MB
  • After minification 3.6 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, Sakura Mobile needs image optimization as it can save up to 1.0 MB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-52%

Potential reduce by 62.3 kB

  • Original 120.1 kB
  • After minification 120.1 kB
  • After compression 57.8 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 62.3 kB or 52% of the original size.

CSS Optimization

-13%

Potential reduce by 19.5 kB

  • Original 152.4 kB
  • After minification 152.4 kB
  • After compression 133.0 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. Sakuramobile.jp needs all CSS files to be minified and compressed as it can save up to 19.5 kB or 13% of the original size.

Requests Breakdown

Number of requests can be reduced by 55 (69%)

Requests Now

80

After Optimization

25

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sakura Mobile. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

sakuramobile.jp accessibility score

86

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.

ARIA

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.

Impact

Issue

High

ARIA IDs are not unique

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

sakuramobile.jp best practices score

83

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

sakuramobile.jp 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

Links do not have descriptive text

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sakuramobile.jp can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Sakuramobile.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 data is detected on the main page of Sakura Mobile. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: