5 sec in total
1.2 sec
3.6 sec
161 ms
Click here to check amazing Nejm content for Japan. Otherwise, check out these important facts you probably never knew about nejm.jp
NEJM日本国内版は,必要な論文に簡単にアクセスできるよう「主要論文アブストラクト」「目次」「This Week at NEJM.org」を,日本語訳にてご提供しています.
Visit nejm.jpWe analyzed Nejm.jp page load time and found that the first response time was 1.2 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
nejm.jp performance score
name
value
score
weighting
Value4.3 s
17/100
10%
Value4.3 s
41/100
25%
Value6.3 s
42/100
10%
Value30 ms
100/100
30%
Value0
100/100
15%
Value5.7 s
68/100
10%
1203 ms
879 ms
506 ms
1185 ms
505 ms
Our browser made a total of 41 requests to load all elements on the main page. We found that 95% of them (39 requests) were addressed to the original Nejm.jp, 5% (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 Nejm.jp.
Page size can be reduced by 162.3 kB (43%)
378.1 kB
215.8 kB
In fact, the total size of Nejm.jp main page is 378.1 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. 15% of websites need less resources to load. Images take 168.6 kB which makes up the majority of the site volume.
Potential reduce by 10.7 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 10.7 kB or 65% of the original size.
Potential reduce by 20.4 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, Nejm needs image optimization as it can save up to 20.4 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 100.1 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 100.1 kB or 64% of the original size.
Potential reduce by 31.1 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. Nejm.jp needs all CSS files to be minified and compressed as it can save up to 31.1 kB or 85% of the original size.
Number of requests can be reduced by 3 (8%)
40
37
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nejm. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.
nejm.jp
1203 ms
common.css
879 ms
top.css
506 ms
jquery-1.9.0.min.js
1185 ms
common.js
505 ms
css_browser_selector.js
341 ms
analytics.js
60 ms
img_site-id01.gif
180 ms
img_site-id02.gif
171 ms
bg_gnav.gif
172 ms
btn_gnav.gif
173 ms
line_gnav.gif
189 ms
spacer.gif
176 ms
img_gnav01.png
343 ms
img_gnav02.png
340 ms
img_gnav03.png
344 ms
img_gnav03_00.png
346 ms
img_gnav03_1.png
355 ms
img_gnav03_2.png
374 ms
img_gnav04.png
510 ms
img_gnav05.png
512 ms
img_gnav06.png
510 ms
icon_howto.png
513 ms
btn_surch.jpg
531 ms
icon_01.gif
558 ms
bnr_left01.jpg
1013 ms
bnr_left02.jpg
1012 ms
Vol.374_No.11_thisweek_7269_47203.gif
679 ms
Vol.374_No.11_thisweek_7270_88971.gif
890 ms
Vol.374_No.11_thisweek_7271_74235.gif
708 ms
img_under-logo.gif
743 ms
img_footer-id02.gif
849 ms
img_footer-id01.gif
884 ms
img_footer-id01_2.gif
928 ms
300_250_who_B2.jpg
1312 ms
title_lanking.gif
1016 ms
bg_top_title.jpg
1183 ms
img_top_title.gif
1068 ms
icon_02.gif
1135 ms
btn_totop.jpg
1135 ms
collect
12 ms
nejm.jp accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Form elements do not have associated labels
Links do not have a discernible name
nejm.jp best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
nejm.jp SEO score
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
Document uses legible font sizes
Tap targets are not sized appropriately
JA
JA
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nejm.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 Nejm.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.
nejm.jp
Open Graph description is not detected on the main page of Nejm. 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: