rerf.or.jp website information.
rerf.or.jp domain name is registered by .JP top-level domain registry. See the other sites registred in .JP domain zone.
Following name servers are specified for rerf.or.jp domain:
- ns2.rerf.or.jp
- ns1.rerf.or.jp
and probably website rerf.or.jp is hosted by BACI - Bell Canada, CA web hosting company. Check the complete list of other most popular websites hosted by BACI - Bell Canada, CA hosting company.
According to Alexa traffic rank the highest website rerf.or.jp position was 40992 (in the world). The lowest Alexa rank position was 997796. Now website rerf.or.jp ranked in Alexa database as number 130542 (in the world).
Website rerf.or.jp Desktop speed measurement score (46/100) is better than the results of 19.93% of other sites shows that the page desktop performance can be improved.
rerf.or.jp Mobile usability score (100/100) is better than the results of 100% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of rerf.or.jp (33/100) is better than the results of 12.14% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-25-2024 | 130,542 | 999 |
| Nov-24-2024 | 131,541 | -898 |
| Nov-23-2024 | 130,643 | -3,282 |
| Nov-22-2024 | 127,361 | 1,637 |
| Nov-21-2024 | 128,998 | 1,510 |
| Nov-20-2024 | 130,508 | 1,432 |
| Nov-19-2024 | 131,940 | -3,674 |
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rerf.or.jp Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
rerf.or.jp whois
WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.
rerf.or.jp server information
rerf.or.jp desktop page speed rank
Last tested: 2019-02-01
Desktop Speed
Bad
46/100
rerf.or.jp Desktop Speed Test Quick Summary
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priority - 28 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
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https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.css (expiration not specified)
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https://www.rerf.or.jp/css/style.css (expiration not specified)
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https://www.rerf.or.jp/images/img-content01-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-content02-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-content03-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-hiroshima-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-message-pc_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-nagasaki-pc.jpg (expiration not specified)
https://www.rerf.or.jp/js/scripts.js (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/entrance-1.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide01-2.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide1.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide2.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide3.jpg (expiration not specified)
https://www.googletagmanager.com/gtag/js?id=UA-97498850-1 (15 minutes)
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priority - 9 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
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https://rerf.or.jp/
https://www.rerf.or.jp/en/
https://rerf.or.jp/
https://www.rerf.or.jp/en/
priority - 4 Reduce server response time
In our test, your server responded in 0.28 seconds.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 2 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Optimize CSS Delivery of the following:
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priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
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priority - 0 Minify JavaScript
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priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 565B (11% reduction).
Minifying https://www.rerf.or.jp/en/ could save 565B (11% reduction) after compression.
rerf.or.jp Desktop Resources
| Total Resources | 62 |
| Number of Hosts | 5 |
| Static Resources | 58 |
| JavaScript Resources | 8 |
| CSS Resources | 3 |
rerf.or.jp Desktop Resource Breakdown
rerf.or.jp mobile page speed rank
Last tested: 2019-02-01
Mobile Speed
Bad
33/100
rerf.or.jp Mobile Speed Test Quick Summary
priority - 88 Optimize images
Properly formatting and compressing images can save many bytes of data.
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Compressing https://www.rerf.or.jp/common/images/ico-pagetop-pc-off.png could save 2.8KiB (86% reduction).
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Compressing https://www.rerf.or.jp/images/ico-content01-sp.png could save 624B (27% reduction).
Compressing https://www.rerf.or.jp/common/images/site-logo-pc-foot_en.png could save 614B (11% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu04-off.png could save 608B (32% reduction).
Compressing https://www.rerf.or.jp/common/images/btn-close02.png could save 607B (35% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu03-off.png could save 578B (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu07.png could save 533B (38% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu02-off.png could save 467B (21% reduction).
Compressing https://www.rerf.or.jp/common/images/btn-close.png could save 403B (36% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu01-off.png could save 383B (29% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu02.png could save 379B (26% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu05-off.png could save 344B (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-search-off.png could save 301B (27% reduction).
Compressing https://www.rerf.or.jp/common/images/btn-menu.png could save 278B (34% reduction).
Compressing https://www.rerf.or.jp/images/ico-bn01-sp.png could save 267B (12% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu04.png could save 264B (23% reduction).
Compressing https://www.rerf.or.jp/images/ico-bn02-sp.png could save 249B (17% reduction).
Compressing https://www.rerf.or.jp/images/ico-bn03-sp.png could save 223B (18% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-arrow02.png could save 200B (50% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu01.png could save 200B (26% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-facebook02.png could save 183B (48% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-arrow02-wh.png could save 142B (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-arrow01.png could save 132B (41% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-plus.png could save 127B (53% reduction).
Compressing https://www.rerf.or.jp/uploads/2017/03/img-slide2.jpg could save 142.6KiB (72% reduction).
Compressing https://www.rerf.or.jp/uploads/2017/03/img-slide01-2.jpg could save 105.6KiB (56% reduction).
Compressing https://www.rerf.or.jp/uploads/2017/03/img-slide3.jpg could save 70.4KiB (45% reduction).
Compressing https://www.rerf.or.jp/uploads/2017/03/img-slide1.jpg could save 68.7KiB (44% reduction).
Compressing https://www.rerf.or.jp/images/img-hiroshima-pc.jpg could save 45.2KiB (50% reduction).
Compressing https://www.rerf.or.jp/images/img-nagasaki-pc.jpg could save 32.9KiB (45% reduction).
Compressing https://www.rerf.or.jp/images/bn-top01-pc_en.jpg could save 18.6KiB (45% reduction).
Compressing https://www.rerf.or.jp/images/img-message-pc_en.jpg could save 14.4KiB (41% reduction).
Compressing https://www.rerf.or.jp/images/img-content01-pc.jpg could save 14KiB (46% reduction).
Compressing https://www.rerf.or.jp/images/img-content03-pc.jpg could save 12.8KiB (43% reduction).
Compressing https://www.rerf.or.jp/images/img-content02-pc.jpg could save 8.5KiB (37% reduction).
Compressing https://www.rerf.or.jp/images/bn-info03_en.jpg could save 4.4KiB (47% reduction).
Compressing https://www.rerf.or.jp/images/bn-info04_en.jpg could save 3.1KiB (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-pagetop-sp-off.png could save 2.8KiB (81% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-pagetop-pc-off.png could save 2.8KiB (86% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu06-off.png could save 976B (36% reduction).
Compressing https://www.rerf.or.jp/images/ico-content01-sp.png could save 624B (27% reduction).
Compressing https://www.rerf.or.jp/common/images/site-logo-pc-foot_en.png could save 614B (11% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu04-off.png could save 608B (32% reduction).
Compressing https://www.rerf.or.jp/common/images/btn-close02.png could save 607B (35% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu03-off.png could save 578B (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu07.png could save 533B (38% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu02-off.png could save 467B (21% reduction).
Compressing https://www.rerf.or.jp/common/images/btn-close.png could save 403B (36% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu01-off.png could save 383B (29% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu02.png could save 379B (26% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-menu05-off.png could save 344B (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-search-off.png could save 301B (27% reduction).
Compressing https://www.rerf.or.jp/common/images/btn-menu.png could save 278B (34% reduction).
Compressing https://www.rerf.or.jp/images/ico-bn01-sp.png could save 267B (12% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu04.png could save 264B (23% reduction).
Compressing https://www.rerf.or.jp/images/ico-bn02-sp.png could save 249B (17% reduction).
Compressing https://www.rerf.or.jp/images/ico-bn03-sp.png could save 223B (18% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-arrow02.png could save 200B (50% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-fmenu01.png could save 200B (26% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-facebook02.png could save 183B (48% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-arrow02-wh.png could save 142B (37% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-arrow01.png could save 132B (41% reduction).
Compressing https://www.rerf.or.jp/common/images/ico-plus.png could save 127B (53% reduction).
priority - 47 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://www.rerf.or.jp/common/css/style.css (expiration not specified)
https://www.rerf.or.jp/common/images/bg01.png (expiration not specified)
https://www.rerf.or.jp/common/images/btn-close.png (expiration not specified)
https://www.rerf.or.jp/common/images/btn-close02.png (expiration not specified)
https://www.rerf.or.jp/common/images/btn-menu.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-arrow01.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-arrow02-wh.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-arrow02.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-facebook-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-facebook02.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu01.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu02.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu03.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu04.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu07.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu01-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu02-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu03-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu04-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu05-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu06-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-pagetop-pc-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-pagetop-sp-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-plus.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-search-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/site-logo-pc-foot_en.png (expiration not specified)
https://www.rerf.or.jp/common/images/site-logo-pc_en.png (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.bxslider/images/bx_loader.gif (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.css (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.js (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.tile.js (expiration not specified)
https://www.rerf.or.jp/common/js/scripts.js (expiration not specified)
https://www.rerf.or.jp/css/style.css (expiration not specified)
https://www.rerf.or.jp/images/bn-info03_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/bn-info04_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/bn-top01-pc_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/ico-bn01-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-bn02-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-bn03-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content01-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content02-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content03-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content04-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content05-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content06-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content07-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content08-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content09-sp.png (expiration not specified)
https://www.rerf.or.jp/images/img-content01-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-content02-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-content03-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-hiroshima-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-message-pc_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-nagasaki-pc.jpg (expiration not specified)
https://www.rerf.or.jp/js/scripts.js (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/entrance-1.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide01-2.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide1.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide2.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide3.jpg (expiration not specified)
https://www.googletagmanager.com/gtag/js?id=UA-97498850-1 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-NNZRL6N (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://www.rerf.or.jp/common/images/bg01.png (expiration not specified)
https://www.rerf.or.jp/common/images/btn-close.png (expiration not specified)
https://www.rerf.or.jp/common/images/btn-close02.png (expiration not specified)
https://www.rerf.or.jp/common/images/btn-menu.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-arrow01.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-arrow02-wh.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-arrow02.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-facebook-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-facebook02.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu01.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu02.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu03.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu04.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-fmenu07.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu01-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu02-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu03-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu04-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu05-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-menu06-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-pagetop-pc-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-pagetop-sp-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-plus.png (expiration not specified)
https://www.rerf.or.jp/common/images/ico-search-off.png (expiration not specified)
https://www.rerf.or.jp/common/images/site-logo-pc-foot_en.png (expiration not specified)
https://www.rerf.or.jp/common/images/site-logo-pc_en.png (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.bxslider/images/bx_loader.gif (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.css (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.js (expiration not specified)
https://www.rerf.or.jp/common/js/jquery.tile.js (expiration not specified)
https://www.rerf.or.jp/common/js/scripts.js (expiration not specified)
https://www.rerf.or.jp/css/style.css (expiration not specified)
https://www.rerf.or.jp/images/bn-info03_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/bn-info04_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/bn-top01-pc_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/ico-bn01-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-bn02-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-bn03-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content01-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content02-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content03-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content04-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content05-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content06-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content07-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content08-sp.png (expiration not specified)
https://www.rerf.or.jp/images/ico-content09-sp.png (expiration not specified)
https://www.rerf.or.jp/images/img-content01-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-content02-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-content03-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-hiroshima-pc.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-message-pc_en.jpg (expiration not specified)
https://www.rerf.or.jp/images/img-nagasaki-pc.jpg (expiration not specified)
https://www.rerf.or.jp/js/scripts.js (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/entrance-1.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide01-2.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide1.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide2.jpg (expiration not specified)
https://www.rerf.or.jp/uploads/2017/03/img-slide3.jpg (expiration not specified)
https://www.googletagmanager.com/gtag/js?id=UA-97498850-1 (15 minutes)
https://www.googletagmanager.com/gtm.js?id=GTM-NNZRL6N (15 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 40 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 3 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://code.jquery.com/jquery-2.2.4.min.js
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.js
https://www.rerf.or.jp/common/js/jquery.tile.js
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.js
https://www.rerf.or.jp/common/js/jquery.tile.js
Optimize CSS Delivery of the following:
https://www.rerf.or.jp/common/js/jquery.bxslider/jquery.bxslider.min.css
https://www.rerf.or.jp/common/css/style.css
https://www.rerf.or.jp/css/style.css
https://www.rerf.or.jp/common/css/style.css
https://www.rerf.or.jp/css/style.css
priority - 34 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://rerf.or.jp/
https://rerf.or.jp/
https://www.rerf.or.jp/en/
https://rerf.or.jp/
https://www.rerf.or.jp/en/
priority - 7 Reduce server response time
In our test, your server responded in 0.28 seconds.
There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 0 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 2.7KiB (27% reduction).
Minifying https://www.rerf.or.jp/common/css/style.css could save 2.2KiB (33% reduction) after compression.
Minifying https://www.rerf.or.jp/css/style.css could save 516B (16% reduction) after compression.
Minifying https://www.rerf.or.jp/css/style.css could save 516B (16% reduction) after compression.
priority - 0 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 574B (25% reduction).
Minifying https://www.rerf.or.jp/common/js/scripts.js could save 343B (19% reduction) after compression.
Minifying https://www.rerf.or.jp/common/js/jquery.tile.js could save 231B (48% reduction) after compression.
Minifying https://www.rerf.or.jp/common/js/jquery.tile.js could save 231B (48% reduction) after compression.
priority - 0 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 565B (11% reduction).
Minifying https://www.rerf.or.jp/en/ could save 565B (11% reduction) after compression.
rerf.or.jp Mobile Resources
| Total Resources | 68 |
| Number of Hosts | 5 |
| Static Resources | 64 |
| JavaScript Resources | 8 |
| CSS Resources | 3 |
rerf.or.jp Mobile Resource Breakdown
rerf.or.jp mobile page usability
Last tested: 2019-02-01
Mobile Usability
Good
100/100
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rerf.or.jp Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
rerf.or.jp TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.