Tools & Wizards About Us
rental-box.jp screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

rental-box.jp

私設私書箱検索センター

Page Load Speed

2.2 sec in total

First Response

584 ms

Resources Loaded

1.5 sec

Page Rendered

197 ms

rental-box.jp screenshot

About Website

Visit rental-box.jp now to see the best up-to-date Rental Box content for Japan and also check out these interesting facts you probably never knew about rental-box.jp

私設私書箱検索センターは、日本全国47都道府県にある民間会社が提供する「私設私書箱(住所貸し)」サービスの検索・比較サイトです。

Visit rental-box.jp

Key Findings

We analyzed Rental-box.jp page load time and found that the first response time was 584 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

rental-box.jp performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value2,590 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.4 s

38/100

10%

Network Requests Diagram

rental-box.jp

584 ms

border

307 ms

show_ads.js

6 ms

border

304 ms

bg04-2.gif

205 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 28% of them (14 requests) were addressed to the original Rental-box.jp, 12% (6 requests) were made to Tpc.googlesyndication.com and 10% (5 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (882 ms) belongs to the original domain Rental-box.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 82.6 kB (13%)

Content Size

631.2 kB

After Optimization

548.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rental-box.jp main page is 631.2 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. 50% of websites need less resources to load. Images take 515.7 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 24.1 kB

  • Original 31.3 kB
  • After minification 31.2 kB
  • After compression 7.3 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 24.1 kB or 77% of the original size.

Image Optimization

-4%

Potential reduce by 22.0 kB

  • Original 515.7 kB
  • After minification 493.8 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. Rental Box images are well optimized though.

JavaScript Optimization

-19%

Potential reduce by 9.8 kB

  • Original 52.7 kB
  • After minification 52.6 kB
  • After compression 42.8 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 9.8 kB or 19% of the original size.

CSS Optimization

-85%

Potential reduce by 26.7 kB

  • Original 31.5 kB
  • After minification 31.5 kB
  • After compression 4.8 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. Rental-box.jp needs all CSS files to be minified and compressed as it can save up to 26.7 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (48%)

Requests Now

48

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rental Box. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

rental-box.jp

rental-box.jp

584 ms

border

border

307 ms

show_ads.js

show_ads.js

6 ms

border

border

304 ms

bg04-2.gif

bg04-2.gif

205 ms

box_titol.gif

box_titol.gif

348 ms

zetta_cashing_728_90.jpg

zetta_cashing_728_90.jpg

787 ms

icon082.gif

icon082.gif

360 ms

yn008_03.gif

yn008_03.gif

346 ms

yn006_03.gif

yn006_03.gif

360 ms

titol_fc100.gif

titol_fc100.gif

371 ms

000690.gif

000690.gif

513 ms

fla_02aaa.jpg

fla_02aaa.jpg

803 ms

2ndpost_net.gif

2ndpost_net.gif

882 ms

hensai110_250250.gif

hensai110_250250.gif

519 ms

zetta_segment_03_180.gif

zetta_segment_03_180.gif

550 ms

yn006_01.gif

yn006_01.gif

710 ms

ca-pub-3250119057044277.js

ca-pub-3250119057044277.js

75 ms

zrt_lookup.html

zrt_lookup.html

160 ms

show_ads_impl.js

show_ads_impl.js

125 ms

widgets.js

widgets.js

34 ms

analytics.js

analytics.js

52 ms

timeline.d11f7a3b3287fb94220e8ee6d03cc772.js

timeline.d11f7a3b3287fb94220e8ee6d03cc772.js

111 ms

collect

collect

78 ms

ads

ads

256 ms

osd.js

osd.js

12 ms

ads

ads

217 ms

syndication

syndication

113 ms

487054662839705600

487054662839705600

170 ms

ads

ads

222 ms

proxy.jpg

proxy.jpg

159 ms

timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css

timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css

5 ms

timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css

timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css

8 ms

2937480734046040013

2937480734046040013

64 ms

abg.js

abg.js

84 ms

m_js_controller.js

m_js_controller.js

64 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

126 ms

uxlB35_x_normal.png

uxlB35_x_normal.png

222 ms

IbKuy57B_normal.png

IbKuy57B_normal.png

317 ms

fc100_5050_normal.gif

fc100_5050_normal.gif

329 ms

syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css

syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css

109 ms

syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css

syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css

107 ms

7203648773817927476

7203648773817927476

110 ms

favicon

favicon

107 ms

nessie_icon_thin_arrow_big_white.png

nessie_icon_thin_arrow_big_white.png

55 ms

favicon

favicon

146 ms

s

s

40 ms

x_button_blue2.png

x_button_blue2.png

61 ms

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

9 ms

proxy.jpg

proxy.jpg

50 ms

Accessibility Review

rental-box.jp accessibility score

98

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.

Best Practices

rental-box.jp 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rental-box.jp SEO score

93

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

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

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    N/A

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rental-box.jp 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 Rental-box.jp main page’s claimed encoding is shift_jis. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

rental-box.jp

Open Graph description is not detected on the main page of Rental Box. 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: