6.8 sec in total
1.1 sec
5.5 sec
245 ms
Welcome to seiritsu.ac.jp homepage info - get ready to check Seiritsu best content for Japan right away, or after learning these important things about seiritsu.ac.jp
東京都北区にある成立学園中学・高等学校は将来の目標を具体的に達成する「見える学力」と、幅広い教養を身につけ”発信力”を育成する「見えない学力」を共に育て、生涯学び続けるための足腰を自ら鍛える力を養います。
Visit seiritsu.ac.jpWe analyzed Seiritsu.ac.jp page load time and found that the first response time was 1.1 sec and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
seiritsu.ac.jp performance score
name
value
score
weighting
Value3.8 s
26/100
10%
Value35.4 s
0/100
25%
Value9.3 s
13/100
10%
Value660 ms
45/100
30%
Value0.144
77/100
15%
Value25.9 s
0/100
10%
1102 ms
339 ms
342 ms
847 ms
342 ms
Our browser made a total of 130 requests to load all elements on the main page. We found that 80% of them (104 requests) were addressed to the original Seiritsu.ac.jp, 8% (11 requests) were made to Pbs.twimg.com and 4% (5 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Seiritsu.ac.jp.
Page size can be reduced by 402.9 kB (13%)
3.1 MB
2.7 MB
In fact, the total size of Seiritsu.ac.jp main page is 3.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.
Potential reduce by 69.1 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 28.7 kB, which is 36% 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 69.1 kB or 87% of the original size.
Potential reduce by 128.3 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. Seiritsu images are well optimized though.
Potential reduce by 143.6 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 143.6 kB or 62% of the original size.
Potential reduce by 61.8 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. Seiritsu.ac.jp needs all CSS files to be minified and compressed as it can save up to 61.8 kB or 82% of the original size.
Number of requests can be reduced by 45 (35%)
129
84
The browser has sent 129 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Seiritsu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.
www.seiritsu.ac.jp
1102 ms
top.css
339 ms
login.css
342 ms
jquery-1.6.2.min.js
847 ms
timer.js
342 ms
libjq.js
343 ms
tools-top.js
344 ms
jquery.tools.min.js
676 ms
jquery-ui-1.8.14.custom.min.js
678 ms
cloud-carousel.1.0.5.min.js
509 ms
l.js
351 ms
base.css
180 ms
common-layout.css
346 ms
common-sitenavi2.css
351 ms
common-sub-column.css
512 ms
common-parts.css
512 ms
top-feature.css
515 ms
top-signage.css
516 ms
top-main-column.css
520 ms
search-inputtext.gif
183 ms
frame
181 ms
search-btn.gif
180 ms
btn-rss.gif
179 ms
logo.gif
350 ms
navi_bg_srt.jpg
685 ms
updown.gif
345 ms
img_bcf2c7e67a3428c4b204fa5e69313cdc16693.jpg
345 ms
img_6b633fd5090e3673ab8658e58025ca479744.jpg
347 ms
img_033f8f9648df541fa17142ed2464deb42779.jpg
348 ms
img_c80045bfe575895ce02294171d64ca515004.jpg
529 ms
img_7fe6a572eb72819abaae67a80616fbd593379.jpg
865 ms
img_71f4cb78f6c32ae4922f257ffa67711492001.jpg
1028 ms
img_ab1cc1da2aec7dcc204df609656d1cb4194380.jpg
1203 ms
img_70c78baa709840f8baf5bf4368603f0a168807.jpg
1360 ms
bg-top-wrap.gif
699 ms
ttl-event-carender.gif
857 ms
ttl-ranking.gif
867 ms
ttl-blog.gif
1029 ms
btns-s.jpg
1035 ms
bg-blog.jpg
1039 ms
img_e2a0bcce39b0b8ffa60ceb3da205e4073795.jpg
1197 ms
ttl-mobile.gif
1200 ms
qr.gif
1206 ms
widgets.js
105 ms
ttl-press.gif
1161 ms
pic-press.jpg
1319 ms
btns-b.jpg
1835 ms
ttl-hdline.jpg
1320 ms
img_fe97a93843b9d9894ea9cc9197cc5a6f7728.jpg
1325 ms
ttl-news.jpg
1331 ms
btn-rss-news.gif
1478 ms
btn-twit-news.gif
1488 ms
feature-search-word.gif
1489 ms
btn-feature-search-submit.gif
1495 ms
img_72eec09d9925cda5623aa5fa52c6b1058430.jpg
1502 ms
img_34e53a34fbbaedec53771cea136003a521483.jpg
1646 ms
ga.js
27 ms
timeline.d11f7a3b3287fb94220e8ee6d03cc772.js
140 ms
__utm.gif
38 ms
img_fe97a93843b9d9894ea9cc9197cc5a6f7728.jpg
1537 ms
img_aa16481fd85908fc07636c883f5cd9e18544.jpg
1534 ms
img_e2a0bcce39b0b8ffa60ceb3da205e4073795.jpg
1540 ms
img_d6a2d1aa2e2ec73a19ab9f03f20f226d9353.jpg
1543 ms
syndication
87 ms
307421877754793985
161 ms
img_644fb16f0ea3a06405b5548d92238cb54337.jpg
1525 ms
img_899b408e69ce93dfc61ebbfaa2569bd78328.jpg
1534 ms
img_6dfc918343ff619895f1c40c4f1faae89355.jpg
1536 ms
ttl-sub-pamph.jpg
1541 ms
word-sub-pamph.gif
1549 ms
proxy.jpg
205 ms
proxy.jpg
291 ms
timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
46 ms
timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
68 ms
logo_twitter_normal.jpg
268 ms
web-pamph01-2016.jpg
1507 ms
vg3m7z37adbu1y78wljg_normal.jpeg
373 ms
CBZZ3kuUkAA65dj.jpg:small
462 ms
CAc48MeVIAE7keA.jpg:small
509 ms
B_iZfgRU0AAjQZ9.jpg:small
414 ms
CNx_gpmUcAA-J_z.png:small
825 ms
CNx_ftXU8AETEHq.png:small
690 ms
CNx_ghtUYAAJ246.png:small
797 ms
CNx_dz3UsAEmNW4.jpg:small
596 ms
B_jg8AVUgAEYJU0.jpg:small
729 ms
B_jg8AUVEAAjgjx.jpg:small
641 ms
syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css
45 ms
syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css
126 ms
web-pamph02-2016.jpg
1368 ms
web-pamph03.jpg
1354 ms
proxy.jpg
86 ms
proxy.jpg
64 ms
but1.gif
1202 ms
but2.gif
1194 ms
ttl-sub-sports.jpg
1200 ms
jot.html
29 ms
img_34e53a34fbbaedec53771cea136003a521483.jpg
1183 ms
word-sub-sports.gif
1191 ms
ttl-sub-gallery.jpg
1189 ms
img_47142f068889e00546acd02546a945cb44133.jpg
1189 ms
img_9e48dd43fd266048096e7fe76e5cc1d898202.jpg
1030 ms
img_4ddcb8a1711a0790b1f1e83585ff1a9468725.jpg
1036 ms
img_8eafd7080e6ffa36f77d34fb32adc7d7128099.jpg
1177 ms
img_e2637d8ab538035e27bfbc537f49383c91071.jpg
1183 ms
img_d662a800fc5b51fb586c96fdc8464862138898.jpg
1181 ms
img_ede5f7d21515cb6dfc47a84daf1fc602142422.jpg
1039 ms
img_c030cf7ab82146dd6aff57ebcd19ea1098500.jpg
1033 ms
img_059300122c934daf4cc03088f16ea0db97587.jpg
1039 ms
img_e5dd112f925a7032594f0fc0fcb8d648116869.jpg
1173 ms
img_5ad6460768bb2f53e43b82484554aedd115471.jpg
1177 ms
img_c1b3233c7a862446b31dc893b5b70dcb189285.jpg
1037 ms
ttl-sub-tv.jpg
1029 ms
img_d8d235c0c4494b8b209db3b8aa3cba5867539.jpg
1203 ms
naka_challenge.jpg
1204 ms
naka_funtou.jpg
1165 ms
naka_earth.jpg
1030 ms
bnr01.jpg
1027 ms
bnr01.jpg
1028 ms
bnr02.jpg
1172 ms
bnr03.jpg
1174 ms
bnr04.jpg
1040 ms
bnr05.jpg
1029 ms
bnr06.jpg
1034 ms
bnr07.jpg
1035 ms
icon-free-dial.gif
1172 ms
m.gif
1174 ms
navi_tab.jpg
1041 ms
arrow-left.jpg
1031 ms
arrow-right.jpg
1035 ms
circle.jpg
1036 ms
seiritsu.ac.jp accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-hidden="true"] elements contain focusable descendents
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
[aria-*] attributes do not have valid values
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
Buttons do not have an accessible name
Links do not have a discernible name
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
seiritsu.ac.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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
seiritsu.ac.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 Seiritsu.ac.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 Seiritsu.ac.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.
seiritsu.ac.jp
Open Graph description is not detected on the main page of Seiritsu. 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: