Website review jacar.go.jp
アジア歴史資料センター
Generated on March 17 2026 22:42 PM
Old data? UPDATE !
The score is 55/100
SEO Content
Title
アジア歴史資料センター
Length : 11
Perfect, your title contains between 10 and 70 characters.
Description
アジア歴史資料センターは、近現代（1860年代から1945年前後）の日本とアジア近隣諸国との関係に関わる歴史資料（目録・画像）をインターネット上で提供する電子資料センター（データベース）であり、国立公文書館で運営されています。
Length : 113
Great, your meta description contains between 70 and 160 characters.
Keywords
Very bad. We haven't found meta keywords on your page. Use this free online meta tags generator to create keywords.
Og Meta Properties
Good, your page take advantage of Og Properties.
| Property | Content |
|---|---|
| title | アジア歴史資料センター |
| image | https://www.jacar.go.jp/images/topimg06.jpg |
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 2 | 1 | 2 | 0 | 0 |
- [H1] 日本とアジアをつなぐデジタルアーカイブ
- [H2] アジア歴史資料センターは、近現代の日本とアジア近隣諸国等との関係についての歴史資料を公開しています。国立公文書館、外務省外交史料館、防衛省防衛研究所が保管する公文書などのデジタル画像が閲覧できます。
- [H2] 新着情報
- [H3] アジ歴データベース検索
- [H4] バナー
- [H4] お知らせしたいコンテンツや情報のサムネイル（上は参考例）
Images
We found 9 images on this web page.
6 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 15%
Good, this page's ratio of text to HTML code is higher than 15, but lower than 25 percent.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Too Bad, you have Iframes on the web pages, this mean that content in an Iframe cannot be indexed.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
Perfect! No underscores detected in your URLs.
In-page links
We found a total of 6 links including 0 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| アジア歴史資料センターについて | Internal | Passing Juice |
| アジ歴ニューズレターを読む | Internal | Passing Juice |
| 利用ガイド | External | Passing Juice |
| 資料画像の利用について | External | Passing Juice |
| これまでのコンテンツ等   ＞ | Internal | Passing Juice |
| ▶︎ 新着情報一覧を見る | Internal | Passing Juice |
SEO Keywords
Keywords Cloud
日本とアジアをつなぐ インターネット特別展 テーマで見る 新着情報一覧を見る 新着情報 アジア歴史資料ラーニング これまでのコンテンツ等nbspnbspnbsp アジア歴史資料センター 時系列で見る アジ歴コンテンツ
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| アジア歴史資料センター | 1 |  |
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| インターネット特別展 | 1 | |
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| 新着情報一覧を見る | 1 | |
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| 新着情報 | 1 | |
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| これまでのコンテンツ等nbspnbspnbsp | 1 | |
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Usability
Url
Domain : jacar.go.jp
Length : 11
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
Good. Your declared language is ja.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
HTML 5
Encoding
Perfect. Your declared charset is UTF-8.
W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Excellent, your website doesn't use nested tables. |
|
Too bad, your website is using inline styles. |
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Great, your website has few CSS files. |
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Perfect, your website has few JavaScript files. |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Missing
Your website does not have an XML sitemap - this can be problematic.
A sitemap lists URLs that are available for crawling and can include additional information like your site's latest updates, frequency of changes and importance of the URLs. This allows search engines to crawl the site more intelligently.
Robots.txt
https://jacar.go.jp/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
Web analytics let you measure visitor activity on your website. You should have at least one analytics tool installed, but It can also be good to install a second in order to cross-check the data.
PageSpeed Insights
Device
Categories
Free SEO Testing Tool
Free SEO Testing Tool is a free SEO tool which provides you content analysis of the website.