Diasjp.net - SEO Checker

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Overview of the SEO Check
Meta information
74% 
Page quality
38% 
Page structure
70% 
Link structure
56% 
Server
95% 
External factors
100% 
SEO Score
Response time
3.50 s
File size
163.80 kB
Words
107
Media files
11
Number of links
117 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
データ統合・解析システム - DIAS
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
DIAS
The meta description is too short. (32 pixels out of 1000 max pixel length) Optimize description
The meta description contains only one word.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://diasjp.net/
There is a valid canonical link specified.
Language
(Somewhat important)
Language defined in HTML: ja
Server location: United States of America
The following language is defined by HTML: ja
Alternate/Hreflang Links
(Somewhat important)
The specified alternate links have no errors.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1
robotsmax-image-preview:large
descriptionDIAS
generatorSite Kit by Google 1.170.0
msapplication-TileImagehttps://diasjp.net/wpsite/wp-content/uploads/2024/06/cropped-DIAS_logo_favicon512x512-270x270.png
langja
og:site_nameデータ統合・解析システム
og:urlhttps://diasjp.net/
og:titleデータ統合・解析システム
og:descriptionDIAS
og:typewebsite
og:imagehttps://diasjp.net/wpsite/wp-content/uploads/2024/03/AdobeStock_730628365-1024x294.jpg
og:image:width1024
og:image:height294
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
There are only 107 words on this page. Use at least 250 words to provide useful information.
Only 1 paragraph/s was/were found on this page.
The average number of words per sentence of 3 words is low.
0.9% of the text are stop words.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The amount of tags is very high (9). We recommend using a maximum of 6 tags for this page.
Image SEO
(Somewhat important)
10 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
...wp-content/uploads/2024/01/DIAS_logo.pngデータ統合・解析システム
...2025/07/eyecatch04-unsplash-683x1024.pngNo alt attribute provided
...ent/uploads/2025/03/image-1-1024x191.pngNo alt attribute provided
.../03/9aafde31cfd134a1f5c777fb1e6da4a9.jpgNo alt attribute provided
...e/wp-content/uploads/2025/03/image-2.pngNo alt attribute provided
/wpsite/wp-content/uploads/2025/03/logo.pngNo alt attribute provided
.../UTokyo_Logotype_C_Color_RGB20240401.pngNo alt attribute provided
...e/wp-content/uploads/2025/03/image-5.pngNo alt attribute provided
...p-content/uploads/2025/03/C-EKHL-B-1.pngNo alt attribute provided
...e/wp-content/uploads/2025/03/image-3.pngNo alt attribute provided
...e/wp-content/uploads/2025/03/image-6.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
データ統合・解析システム
The H1 heading is too short (12 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 データ統合・解析システム
H2 お知らせ
H2 運用情報
H2 よくある質問
H2 研究活動
H2 DIAS利用研究成果
H3 データセットを取得 （ダウンロード）したい　
H3 データを解析・加工したい 　　
H3 データセットを公開したい 　　
H3 アプリケーションを 利用したい
H3 DIASデータ俯瞰・検索システム 　
H3 DIAS公開データセット一覧 　　
H3 DIASアプリケーション一覧 　　
H3 DIASアカウントについて 知りたい
H3 データセットを 取得（ダウンロード）したい
H3 データ解析、加工したい
H3 データを公開したい
H3 その他
H3 不具合時
H3 問合せ先：DIAS事務局
H3 利用規約
H3 お知らせ Duplicate text
H5 【2025/12/18 第2報】XRAIN、C-band、テレメータの準リアルタイムデータの配信が当面の間停止します
Some anchor texts are used more than once.
1 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://diasjp.net/Anchor コンテンツへスキップ
https://diasjp.net/Anchor ナビゲーションに移動
https://diasjp.net/IMG-ALT データ統合・解析システム
https://diasjp.net/en/English
A-TITLE 英語
https://diasjp.net/日本語
A-TITLE 日本語
https://diasjp.net/ホーム
https://diasjp.net/faq/よくある質問
https://diasjp.net/use/データ・アプリを利用したい
https://diasjp.net/use/account/DIASアカウントを取得する
/use/analyze_data/データを加工・解析する
/use/howto_download/データセットを探してダウンロードする
https://search.diasjp.net/ja/listExternal Subdomain 公開データセット一覧
https://diasjp.net/rip-dataset/公開終了データセットリスト
/use/using_metadata/メタデータとは？
/use/using_application/アプリケーションを利用する
https://diasjp.net/app_list/アプリケーションリスト
https://diasjp.net/develop/データ公開したい・アプリ開発したい
/develop/data_publishing/DIASからのデータ公開
/develop/publishing_procedure/データ公開までの手続き
/develop/publishing_procedure/...DIASデータセット登録約款
/develop/analysis_environment/DIAS解析環境を使った開発（共同研究）
/develop/joint-research/共同研究課題について
/wpsite/wp-content/uploads/202...募集要項（PDF）
/develop/joint-research/contract/共同研究（無償）契約書ひな形
/develop/joint-research/counte...共同研究課題カウンターパート候補リスト
/develop/joint-research/intere...内部利用向けデータセットリスト
/develop/joint-research/projec...採択課題・成果一覧
/develop/platform_collaboration/プラットフォーム間連携
https://diasjp.net/project/DIAS事業を知りたい
https://diasjp.net/project/about/DIAS事業について
/project/history/DIASの沿革
/project/administration/運営体制
/project/system/DIASシステムの概要
/project/related/関連事業
https://diasjp.net/contribution/国際貢献
/project/leaflet/リーフレット
https://diasjp.net/information/お知らせ
/information/dataset/20251117-...【2025/12/18 第2報】XRAIN、C-band、テレメータの準リアルタイムデータの配信が当面の間停止します
/information/dataset/20251117-...No Text
/use/howto_download/詳細はこちら
/use/analyze_data/Text duplicate 詳細はこちら
/develop/data_publishingText duplicate 詳細はこちら
/use/using_application/Text duplicate 詳細はこちら
https://search.diasjp.net/finderExternal Subdomain Text duplicate 詳細はこちら
https://search.diasjp.net/ja/listExternal Subdomain Text duplicate 詳細はこちら
https://diasjp.net/app_list/Text duplicate 詳細はこちら
https://diasjp.net/information/一覧を見る
/information/category/dataset/データセット
/information/dataset/20260113-...全国版d4PDFダウンスケーリングデータのバイアス補正データの差し替え
/information/category/news/ニュース
/information/news/20251219-pri...【2025/12/25 第2報】【重要】プライバシーポリシーの改正について
/information/category/dataset/Text duplicate データセット
/information/dataset/20251117-...Text duplicate 【2025/12/18 第2報】XRAIN、C-band、テレメータの準リアルタイムデータの配信が当面の間停止します
/information/category/dataset/Text duplicate データセット
/information/dataset/20251020-...全国5kmメッシュアンサンブル気候予測データの公開中断・更新について
/information/category/dataset/Text duplicate データセット
/information/dataset/20250920-...「西部太平洋海上日射量直接観測データセット」（SOLAR_RADIATION_WP）公開
/information/category/dataset/Text duplicate データセット
/information/dataset/20250920-...「全国確率洪水流量データセット」（d4Flood）公開
/information/category/dataset/Text duplicate データセット
/information/dataset/20250919-...RCDSJRA-55の一部データを差し替えました
/information/category/dataset/Text duplicate データセット
/information/dataset/moni1000-...全国天然林試験区_高解像度地形・森林構造・樹冠データ（Moni1000_UAVLiDAR_Crowns）が更新されました
/information/category/dataset/Text duplicate データセット
/information/dataset/20250725-...日本近海域2km将来予測データ FORP-JPN02 version4 一部データを差し替えました
https://diasjp.net/information/Text duplicate 一覧を見る
/information/operation/2025122...【2025/12/25 18:35 第3報】【緊急】12/25 一時的にDIASサービスが利用できません。
/information/operation/2025120...年末年始サポートデスク窓口対応を休止いたします
/information/operation/2025112...【12/01 第3報】DIASシステムが停止しています
https://diasjp.net/faq/Text duplicate 詳細はこちら
https://diasjp.net/faq/Text duplicate 詳細はこちら
https://diasjp.net/faq/Text duplicate 詳細はこちら
https://diasjp.net/faq/Text duplicate 詳細はこちら
https://diasjp.net/faq/Text duplicate 詳細はこちら
https://diasjp.net/faq/Text duplicate 詳細はこちら
https://diasjp.net/faq/FAQ一覧を見る
https://diasjp.net/ds2022/Text duplicate 詳細はこちら
/app_list/s-uipsText duplicate 詳細はこちら
/app_list/zekkei/Text duplicate 詳細はこちら
/develop/joint-research/projec...共同研究課題・成果一覧へ
/publications-citing-dias/DIASを利用した研究成果一覧へ
http://diasjp.net/termsDIASサービス利用規約
http://diasjp.net/privacyDIASプライバシーポリシー
https://www.facebook.com/dias....External Subdomain アイコンリンク
https://twitter.com/DIAS_UTokyoExternal Text duplicate アイコンリンク
/information/category/operation/運用情報
/information/category/topics/トピックス
/information/category/events/イベント
/information/category/special/特集
/information/category/dataset/Text duplicate データセット
https://diasjp.net/Text duplicate ホーム
https://diasjp.net/faq/Text duplicate よくある質問
https://diasjp.net/use/Text duplicate データ・アプリを利用したい
https://diasjp.net/use/account/Text duplicate DIASアカウントを取得する
/use/analyze_data/Text duplicate データを加工・解析する
/use/howto_download/Text duplicate データセットを探してダウンロードする
https://search.diasjp.net/ja/listExternal Subdomain Text duplicate 公開データセット一覧
https://diasjp.net/rip-dataset/Text duplicate 公開終了データセットリスト
/use/using_metadata/Text duplicate メタデータとは？
/use/using_application/Text duplicate アプリケーションを利用する
https://diasjp.net/app_list/Text duplicate アプリケーションリスト
https://diasjp.net/develop/Text duplicate データ公開したい・アプリ開発したい
/develop/data_publishing/Text duplicate DIASからのデータ公開
/develop/publishing_procedure/Text duplicate データ公開までの手続き
/develop/publishing_procedure/...Text duplicate DIASデータセット登録約款
/develop/analysis_environment/Text duplicate DIAS解析環境を使った開発（共同研究）
/develop/joint-research/Text duplicate 共同研究課題について
/wpsite/wp-content/uploads/202...Text duplicate 募集要項（PDF）
/develop/joint-research/contract/Text duplicate 共同研究（無償）契約書ひな形
/develop/joint-research/counte...Text duplicate 共同研究課題カウンターパート候補リスト
/develop/joint-research/intere...Text duplicate 内部利用向けデータセットリスト
/develop/joint-research/projec...Text duplicate 採択課題・成果一覧
/develop/platform_collaboration/Text duplicate プラットフォーム間連携
https://diasjp.net/project/Text duplicate DIAS事業を知りたい
https://diasjp.net/project/about/Text duplicate DIAS事業について
/project/history/Text duplicate DIASの沿革
/project/administration/Text duplicate 運営体制
/project/system/Text duplicate DIASシステムの概要
/project/related/Text duplicate 関連事業
https://diasjp.net/contribution/Text duplicate 国際貢献
/project/leaflet/Text duplicate リーフレット
https://diasjp.net/information/Text duplicate お知らせ
https://diasjp.net/Anchor PAGE TOP

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://diasjp.net/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is very slow (3.50 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
The file size of the HTML document is fine (164 kB).

HTTP Response Header

NameValue
servernginx
dateSat, 17 Jan 2026 11:38:59 GMT
content-typetext/html; charset=UTF-8
content-length36773
varyAccept-Encoding,Cookie
content-encodinggzip
cache-controlprivate, max-age=10800
link<https://diasjp.net/wp-json/>; rel="https://api.w.org/", <https://diasjp.net/wp-json/wp/v2/pages/6670>; rel="alternate"; title="JSON"; type="application/json", <https://diasjp.net/>; rel=shortlink
referrer-policy
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 161 referring domains.
This page has 284 backlinks.
This page has backlinks from 53 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: *
Disallow: /wpsite/wp-admin/
Allow: /wpsite/wp-admin/admin-ajax.php

Sitemap: https://diasjp.net/wp-sitemap.xml

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Search preview

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
DIAS76%Check
diasjp48%Check
net48%Check
DS202239%Check
S-uiPS39%Check
Zekkei39%Check
Exploer39%Check
XRAIN38%Check
C-band38%Check
FAQ34%Check
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