Tools & Wizards About Us
tenki.jp screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

tenki.jp

日本気象協会 tenki.jp / 天気予報・地震・台風

Page Load Speed

6.6 sec in total

First Response

521 ms

Resources Loaded

5.6 sec

Page Rendered

397 ms

tenki.jp screenshot

About Website

Click here to check amazing Tenki content for Japan. Otherwise, check out these important facts you probably never knew about tenki.jp

日本気象協会公式の天気予報専門メディアです。市区町村別のピンポイントな天気予報に加え、専門的な気象情報、地震・津波などの防災情報を提供します。気象予報士が日々更新する日直予報士、花粉や熱中症、スキー積雪などの季節特集も人気です。

Visit tenki.jp

Key Findings

We analyzed Tenki.jp page load time and found that the first response time was 521 ms and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

tenki.jp performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value19.0 s

0/100

10%

TBT (Total Blocking Time)

Value12,880 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value40.7 s

0/100

10%

Network Requests Diagram

tenki.jp

521 ms

tenki.jp

862 ms

common.css

1416 ms

apstag.js

36 ms

prebid.js

1899 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original Tenki.jp, 41% (47 requests) were made to Static.tenki.jp and 8% (9 requests) were made to Storage.tenki.jp. The less responsive or slowest element that took the longest time to load (2.7 sec) relates to the external source Static.tenki.jp.

Page Optimization Overview & Recommendations

Page size can be reduced by 586.9 kB (33%)

Content Size

1.8 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tenki.jp main page is 1.8 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 796.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 154.9 kB

  • Original 187.6 kB
  • After minification 173.2 kB
  • After compression 32.7 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 154.9 kB or 83% of the original size.

Image Optimization

-5%

Potential reduce by 42.0 kB

  • Original 796.9 kB
  • After minification 754.8 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. Tenki images are well optimized though.

JavaScript Optimization

-50%

Potential reduce by 377.9 kB

  • Original 748.6 kB
  • After minification 748.5 kB
  • After compression 370.6 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 377.9 kB or 50% of the original size.

CSS Optimization

-30%

Potential reduce by 12.1 kB

  • Original 40.7 kB
  • After minification 40.7 kB
  • After compression 28.6 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. Tenki.jp needs all CSS files to be minified and compressed as it can save up to 12.1 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (43%)

Requests Now

113

After Optimization

64

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tenki. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

tenki.jp

tenki.jp

521 ms

tenki.jp

tenki.jp

862 ms

common.css

common.css

1416 ms

apstag.js

apstag.js

36 ms

prebid.js

prebid.js

1899 ms

jquery.min.js

jquery.min.js

46 ms

gpt.js

gpt.js

219 ms

optimize.js

optimize.js

46 ms

widgets.js

widgets.js

90 ms

td_tjp_access.js

td_tjp_access.js

734 ms

tenki_hb.js

tenki_hb.js

233 ms

gtm.js

gtm.js

202 ms

loader.js

loader.js

204 ms

small.jpg

small.jpg

1004 ms

middle.jpg

middle.jpg

1389 ms

middle.jpg

middle.jpg

1614 ms

middle.jpg

middle.jpg

1005 ms

middle.png

middle.png

1465 ms

middle.png

middle.png

1466 ms

tenkijp-season-08.png

tenkijp-season-08.png

418 ms

search-gps.png

search-gps.png

771 ms

japan-detail-small.jpg

japan-detail-small.jpg

645 ms

xsmall.jpg

xsmall.jpg

771 ms

recent-entry-japan-detail-small.jpg

recent-entry-japan-detail-small.jpg

1001 ms

forecaster.png

forecaster.png

1001 ms

japan.png

japan.png

1220 ms

01_n.png

01_n.png

1001 ms

17_n.png

17_n.png

1002 ms

08_n.png

08_n.png

1001 ms

alert.gif

alert.gif

1217 ms

top-weather-middle.jpg

top-weather-middle.jpg

1249 ms

area-top-middle.jpg

area-top-middle.jpg

1255 ms

leisure-top-pickup-1.jpeg

leisure-top-pickup-1.jpeg

1217 ms

leisure-top-pickup-2.jpg

leisure-top-pickup-2.jpg

1463 ms

leisure-top-pickup-4.jpg

leisure-top-pickup-4.jpg

1462 ms

02.png

02.png

1462 ms

01.png

01.png

1417 ms

10.png

10.png

1461 ms

03.png

03.png

1460 ms

15.png

15.png

1608 ms

08.png

08.png

1655 ms

japan-detail-middle.jpg

japan-detail-middle.jpg

1674 ms

sns-icon_x.png

sns-icon_x.png

1655 ms

sns-icon_youtube.png

sns-icon_youtube.png

1655 ms

sns-icon_facebook.png

sns-icon_facebook.png

1659 ms

sns-icon_Instagram.png

sns-icon_Instagram.png

1792 ms

tenkijp_ft_external_img.png

tenkijp_ft_external_img.png

2697 ms

small.jpg

small.jpg

1656 ms

small.jpg

small.jpg

1653 ms

small.jpg

small.jpg

1672 ms

small.jpg

small.jpg

1653 ms

middle.jpg

middle.jpg

1682 ms

middle.jpg

middle.jpg

1803 ms

middle.jpg

middle.jpg

2027 ms

middle.jpg

middle.jpg

1849 ms

pubads_impl.js

pubads_impl.js

56 ms

11384922

11384922

194 ms

glass.png

glass.png

1505 ms

js

js

111 ms

analytics.js

analytics.js

366 ms

hbbbcop8ly

hbbbcop8ly

433 ms

rank-1.png

rank-1.png

1193 ms

rank-2.png

rank-2.png

1206 ms

rank-3.png

rank-3.png

1197 ms

more_dots.png

more_dots.png

1315 ms

US.png

US.png

1344 ms

KR.png

KR.png

1365 ms

TW.png

TW.png

1359 ms

SG.png

SG.png

1392 ms

publishertag.ids.js

publishertag.ids.js

162 ms

TH.png

TH.png

1411 ms

like.php

like.php

298 ms

itm.js

itm.js

193 ms

lognos.js

lognos.js

313 ms

lib.min.js

lib.min.js

114 ms

td.min.js

td.min.js

120 ms

aid

aid

881 ms

track.js

track.js

1020 ms

UK.png

UK.png

1390 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

102 ms

collect

collect

46 ms

collect

collect

95 ms

AU.png

AU.png

1363 ms

clarity.js

clarity.js

45 ms

settings

settings

261 ms

10016

10016

957 ms

ga-audiences

ga-audiences

117 ms

segment

segment

394 ms

HK.png

HK.png

1185 ms

CN.png

CN.png

1223 ms

icon-menu-sprite.png

icon-menu-sprite.png

1335 ms

home.png

home.png

1323 ms

w9py8-RGams.js

w9py8-RGams.js

157 ms

FEppCFCt76d.png

FEppCFCt76d.png

151 ms

utm.png

utm.png

181 ms

button.856debeac157d9669cf51e73a08fbc93.js

button.856debeac157d9669cf51e73a08fbc93.js

50 ms

embeds

embeds

43 ms

follow_button.2f70fb173b9000da126c79afe2098f02.ja.html

follow_button.2f70fb173b9000da126c79afe2098f02.ja.html

31 ms

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

tweet_button.2f70fb173b9000da126c79afe2098f02.ja.html

50 ms

embeds

embeds

57 ms

gtm.js

gtm.js

35 ms

destination

destination

91 ms

beacon.gif

beacon.gif

374 ms

pageview.js

pageview.js

164 ms

beacon.html

beacon.html

232 ms

log.js

log.js

24 ms

tracker

tracker

333 ms

activityi;src=10208769;type=invmedia;cat=im8db0;ord=7025823712093;npa=0;auiddc=2076042101.1714824459;u1=8235;u2=tenki_jp;u3=https%3A%2F%2Ftenki.jp%2F;pscdl=noapi;gtm=45fe4510v9181790672za201;gcs=G1--;gcd=13l3l3l3l5;dma=0;tcfd=10000;epver=2;~oref=https%3A%2F%2Ftenki.jp%2F

activityi;src=10208769;type=invmedia;cat=im8db0;ord=7025823712093;npa=0;auiddc=2076042101.1714824459;u1=8235;u2=tenki_jp;u3=https%3A%2F%2Ftenki.jp%2F;pscdl=noapi;gtm=45fe4510v9181790672za201;gcs=G1--;gcd=13l3l3l3l5;dma=0;tcfd=10000;epver=2;~oref=https%3A%2F%2Ftenki.jp%2F

137 ms

bh.json

bh.json

209 ms

tenkijp_access_log

tenkijp_access_log

32 ms

src=10208769;type=invmedia;cat=im8db0;ord=7025823712093;npa=0;auiddc=*;u1=8235;u2=tenki_jp;u3=https%3A%2F%2Ftenki.jp%2F;pscdl=noapi;gtm=45fe4510v9181790672za201;gcs=G1--;gcd=13l3l3l3l5;dma=0;tcfd=10000;epver=2;~oref=https%3A%2F%2Ftenki.jp%2F

src=10208769;type=invmedia;cat=im8db0;ord=7025823712093;npa=0;auiddc=*;u1=8235;u2=tenki_jp;u3=https%3A%2F%2Ftenki.jp%2F;pscdl=noapi;gtm=45fe4510v9181790672za201;gcs=G1--;gcd=13l3l3l3l5;dma=0;tcfd=10000;epver=2;~oref=https%3A%2F%2Ftenki.jp%2F

81 ms

universe_cookie_sync.html

universe_cookie_sync.html

879 ms

config.json

config.json

172 ms

get-tr.html

get-tr.html

702 ms

container.html

container.html

27 ms

c.gif

c.gif

8 ms

Accessibility Review

tenki.jp accessibility score

75

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

tenki.jp best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

tenki.jp SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    JA

  • Language Claimed

    JA

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tenki.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 Tenki.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.

Social Sharing Optimization

tenki.jp

Open Graph data is detected on the main page of Tenki. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: