Tools & Wizards About Us
libroscience.com screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    84% of other websites

  • 45

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

libroscience.com

株式会社リブロ・サイエンス

Page Load Speed

3.8 sec in total

First Response

624 ms

Resources Loaded

2.9 sec

Page Rendered

234 ms

libroscience.com screenshot

About Website

Visit libroscience.com now to see the best up-to-date Libroscience content for Japan and also check out these interesting facts you probably never knew about libroscience.com

共用試験・CBT対策・医師国家試験対策から卒後研修まで、医師の生涯教育をサポートします。共用試験対策シリーズ（緑本）、新わかるシリーズ（DVD）、アイメディスンの発行元。

Visit libroscience.com

Key Findings

We analyzed Libroscience.com page load time and found that the first response time was 624 ms and then it took 3.2 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

libroscience.com performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value2.9 s

95/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.7 s

97/100

10%

Network Requests Diagram

libroscience.com

624 ms

default.css

171 ms

top.css

318 ms

rollover.js

329 ms

ga.js

76 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 97% of them (58 requests) were addressed to the original Libroscience.com, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Libroscience.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 52.3 kB (18%)

Content Size

293.3 kB

After Optimization

241.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Libroscience.com main page is 293.3 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. 25% of websites need less resources to load. Images take 246.9 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 16.7 kB

  • Original 21.7 kB
  • After minification 16.3 kB
  • After compression 5.1 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 5.4 kB, which is 25% 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 16.7 kB or 77% of the original size.

Image Optimization

-12%

Potential reduce by 30.0 kB

  • Original 246.9 kB
  • After minification 216.9 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, Libroscience needs image optimization as it can save up to 30.0 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-4%

Potential reduce by 670 B

  • Original 18.1 kB
  • After minification 17.9 kB
  • After compression 17.5 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

-75%

Potential reduce by 4.9 kB

  • Original 6.5 kB
  • After minification 4.7 kB
  • After compression 1.6 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. Libroscience.com needs all CSS files to be minified and compressed as it can save up to 4.9 kB or 75% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

59

After Optimization

59

  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Libroscience. According to our analytics all requests are already optimized.

Network Requests Diagram

libroscience.com

libroscience.com

624 ms

default.css

default.css

171 ms

top.css

top.css

318 ms

rollover.js

rollover.js

329 ms

ga.js

ga.js

76 ms

bg.gif

bg.gif

169 ms

headerbg.gif

headerbg.gif

166 ms

logo.gif

logo.gif

161 ms

companyname.gif

companyname.gif

312 ms

globalnavibg.gif

globalnavibg.gif

317 ms

home_o.gif

home_o.gif

332 ms

book.gif

book.gif

334 ms

cbt.gif

cbt.gif

340 ms

order.gif

order.gif

355 ms

question.gif

question.gif

466 ms

company.gif

company.gif

472 ms

info.gif

info.gif

499 ms

seminar_white.gif

seminar_white.gif

501 ms

topimg.jpg

topimg.jpg

1180 ms

leftcontentbg.gif

leftcontentbg.gif

530 ms

whatsnew.gif

whatsnew.gif

621 ms

sns_twitter.jpg

sns_twitter.jpg

626 ms

sns_facebook.jpg

sns_facebook.jpg

663 ms

sns_youtube.jpg

sns_youtube.jpg

667 ms

banner_594i32.jpg

banner_594i32.jpg

707 ms

banner_594.jpg

banner_594.jpg

933 ms

iphoneipad.gif

iphoneipad.gif

784 ms

android_small.jpg

android_small.jpg

996 ms

AppStore.jpg

AppStore.jpg

997 ms

CTMRI_i.jpg

CTMRI_i.jpg

888 ms

banner_cbt.jpg

banner_cbt.jpg

1093 ms

booktopic.gif

booktopic.gif

1070 ms

imedicine.gif

imedicine.gif

1092 ms

detail.gif

detail.gif

1163 ms

wakaru.gif

wakaru.gif

1169 ms

taisaku.gif

taisaku.gif

1252 ms

lungmini.gif

lungmini.gif

1253 ms

minmasu.gif

minmasu.gif

1257 ms

foodmini.gif

foodmini.gif

1334 ms

CTMRI_top1.gif

CTMRI_top1.gif

1344 ms

ippo.gif

ippo.gif

1297 ms

__utm.gif

__utm.gif

13 ms

bibi.gif

bibi.gif

1288 ms

perfect2014.gif

perfect2014.gif

1253 ms

minibooktopic.gif

minibooktopic.gif

1262 ms

minibook.gif

minibook.gif

1207 ms

information.gif

information.gif

1207 ms

footerbg.gif

footerbg.gif

1200 ms

sitepolicy.gif

sitepolicy.gif

1241 ms

privacypolicy.gif

privacypolicy.gif

1246 ms

copyright.gif

copyright.gif

1273 ms

book_o.gif

book_o.gif

171 ms

cbt_o.gif

cbt_o.gif

169 ms

order_o.gif

order_o.gif

161 ms

question_o.gif

question_o.gif

160 ms

company_o.gif

company_o.gif

181 ms

info_o.gif

info_o.gif

174 ms

detail_o.gif

detail_o.gif

316 ms

sitepolicy_o.gif

sitepolicy_o.gif

317 ms

privacypolicy_o.gif

privacypolicy_o.gif

335 ms

Accessibility Review

libroscience.com accessibility score

45

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.

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

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

libroscience.com best practices score

67

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

High

Serves images with low resolution

SEO Factors

libroscience.com SEO score

67

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

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 Libroscience.com 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 Libroscience.com 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

libroscience.com

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