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rerf.or.jp screenshot

Report Summary

  • 0

    Performance

  • 0

    Accessibility

  • 0

    Best Practices

  • 0

    SEO

rerf.or.jp

Radiation Effects Research Foundation (RERF)

Page Load Speed

3.3 sec in total

First Response

585 ms

Resources Loaded

2.6 sec

Page Rendered

166 ms

rerf.or.jp screenshot

About Website

Visit rerf.or.jp now to see the best up-to-date RERF content for Japan and also check out these interesting facts you probably never knew about rerf.or.jp

RERF is a US-Japan cooperative research institute that investigates the health effects of atomic bomb radiation for peaceful purposes.

Visit rerf.or.jp

Key Findings

We analyzed Rerf.or.jp page load time and found that the first response time was 585 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

rerf.or.jp performance score

0

Network Requests Diagram

rerf.or.jp

585 ms

rerf.css

190 ms

space.gif

376 ms

top_img.jpg

1982 ms

bk.jpg

409 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that all of those requests were addressed to Rerf.or.jp and no external sources were called. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Rerf.or.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 31.6 kB (14%)

Content Size

220.4 kB

After Optimization

188.8 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Rerf.or.jp main page is 220.4 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 217.0 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 1.2 kB

  • Original 1.8 kB
  • After minification 1.6 kB
  • After compression 604 B

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 212 B, which is 12% 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 1.2 kB or 66% of the original size.

Image Optimization

-13%

Potential reduce by 29.2 kB

  • Original 217.0 kB
  • After minification 187.8 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. Obviously, RERF needs image optimization as it can save up to 29.2 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-74%

Potential reduce by 1.2 kB

  • Original 1.6 kB
  • After minification 1.2 kB
  • After compression 425 B

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. Rerf.or.jp needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 74% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • CSS

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of RERF. According to our analytics all requests are already optimized.

Network Requests Diagram

rerf.or.jp

rerf.or.jp

585 ms

rerf.css

rerf.css

190 ms

space.gif

space.gif

376 ms

top_img.jpg

top_img.jpg

1982 ms

bk.jpg

bk.jpg

409 ms

top_img2.jpg

top_img2.jpg

561 ms

SEO Factors

rerf.or.jp SEO score

0

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    SHIFT_JIS

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rerf.or.jp can be misinterpreted by Google and other search engines. Our service has detected that English 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 Rerf.or.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

rerf.or.jp

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