SEARCH ENGINE · RESULTS FROM GOOGLE SEARCH · JAPAN

What is Yahoo! JAPAN Search?
Listed in this research as “Yahoo! JAPAN Search (Yahoo!検索)”.
Yahoo! JAPAN Search is a search engine run by LY Corporation. Where its results come from: Google, under a search services agreement running to March 2027. The research records eight rich result types for it, six of them active. The research records Japan as its main market.
Last checked November 10, 2026 · 62 sources, 3 of them could not be fetched
- Type
- Search engine
- Run by
- LY Corporation
- Results come from
- Google, under a search services agreement running to March 2027
- Recorded markets
- Japan
- Where its share is highest
- Japan, 6.57% StatCounter Global StatsAmong ranked places: 1 million people or more, at least three entries listed
- Share, worldwide
- StatCounter's worldwide “Yahoo!” figure, 1.18%, counts Yahoo! JAPAN Search and Yahoo Search together, so this research assigns it to neither. StatCounter Global Stats
- Structured data formats
- None documented
- Rich result types
- 6 active of 8 on record
Who runs it
Run by LY Corporation. The research records the operator as: LY Corporation (LINEヤフー株式会社)
Where does Yahoo! JAPAN Search get its results?
Web results are licensed from Google. Yahoo Japan Corporation announced on 2010-07-27 that it would switch the search engine behind its search service to Google's, covering web, image, video and mobile search, while keeping its own search pages, interface and adjustments[56]. The securities report for the year to 2026-03-31 lists the GOOGLE SERVICES AGREEMENT with Google Asia Pacific Pte. Ltd. as a material contract: original date 2010-07-27, current agreement signed 2020-05-29, term to 2027-03-31. Google supplies search technology on a non-exclusive basis, LY Corporation offers the service under its own brand, either side may add functions that differentiate the results, and LY Corporation may decide whether to display the results Google provides[57]. Google's own 2010 post confirms the non-exclusive licence and the right to customize[58]. Yahoo! JAPAN also sends Google data from its auction, shopping and other services[56, 58]. LY Corporation still runs its own Y!J crawlers[1] and its own result modules; what the crawlers feed is not stated. The public help pages describe an index built by a search robot and ranking by Yahoo!検索's own data and algorithms, and neither they nor the Info Center home name Google as the source[10, 11, 25].
Engines and providers it names
Google SearchSupplies its general web results
Google, under a search services agreement running to March 2027[57]
Conditions recorded: Current contract: GOOGLE SERVICES AGREEMENT with Google Asia Pacific Pte. Ltd., signed 2020-05-29 (original 2010-07-27), term to 2027-03-31. Non-exclusive supply of search technology and search-linked ad technology, used under LY Corporation's own brand; both sides may add differentiating functions; LY Corporation decides whether to display the supplied results. Source is LY Corporation's securities report for the year to 2026-03-31, filed 2026-06-18 (source 57, read in part).
Words on the source page: “契約期間 2027年3月31日まで”
Engines that use results from Yahoo! JAPAN Search
LINE SearchSupplies its general web results
Web search switched to Yahoo! JAPAN Search from late June 2023[59]
As recorded for that engine: Web search in the LINE app switched from LINE Search to Yahoo!検索 from late June 2023 (News tab search box and similar entry points; needs LINE 13.9.0 or later). In-app content search (stickers, official accounts, open chats, friends, talks) stays on LINE's own search[59].
Words on the source page: “2023年6月下旬より「LINE Search」のweb検索を「Yahoo!検索」に切り替”
Which countries use Yahoo! JAPAN Search?
Share, worldwide
StatCounter's worldwide “Yahoo!” figure, 1.18%, counts Yahoo! JAPAN Search and Yahoo Search together, so this research assigns it to neither.
October 2026 · StatCounter Global Stats
#1 by share in
None
of the 1 places ranked here (1 million people or more, at least three entries listed) · StatCounter Global Stats
What the figures measure: share of search engine referrals: visits that sites running StatCounter's code receive from a search results page (it does not count searches), all platforms, October 2026. StatCounter has one “Yahoo!” label. This research counts it as Yahoo! JAPAN Search in Japan and as Yahoo Search everywhere else. Source: StatCounter Global Stats, licensed CC BY-SA 3.0.
- Japan6.57% #3
- Under 1%
- 1% to under 5%
- 5% to under 20%
- 20% to under 50%
- 50% or more
- Not in StatCounter's list there
- No data
Equal Earth projection. Antarctica and many small places are too small to draw; every figure is in the list below. “Not in StatCounter's list there” means its table for that place does not include Yahoo! JAPAN Search; “No data” means StatCounter returned no table for it. StatCounter Global Stats
All 1 countries and territories with a figure
Japan 6.57% (#3)
StatCounter Global Stats, October 2026, CC BY-SA 3.0. The number in brackets is its rank in that place.
Recorded markets
The research records Japan as the main market for Yahoo! JAPAN Search.
Does Yahoo! JAPAN Search use structured data?
The research records no documented support for any structured data format for Yahoo! JAPAN Search. It records 8 rich result types, listed in the next section.
| Format | Documented support | What the research records |
|---|---|---|
| JSON-LD | Not documented | Not documented. No Yahoo! JAPAN search page read names it: the seven help topics[2-9], the six Info Center categories and their 40 article titles[25-31], the search guide[50] and the developer network[48, 49]. Not documented is not the same as not supported.[2] |
| Microdata | Not documented | Not documented. No Yahoo! JAPAN search page read names it: the seven help topics[2-9], the six Info Center categories and their 40 article titles[25-31], the search guide[50] and the developer network[48, 49]. Not documented is not the same as not supported.[2] |
| RDFa | Not documented | Not documented today. In 2010 it was the main markup option for the Yahoo! Search Plugin[42-44], whose end was announced on 2010-10-04[45, 46]. No current page covers it and no page says it is unsupported.[43] |
| Open Graph | Not documented | Not documented. No Yahoo! JAPAN search page read names it: the seven help topics[2-9], the six Info Center categories and their 40 article titles[25-31], the search guide[50] and the developer network[48, 49]. Not documented is not the same as not supported.[2] |
| Microformats | Not documented | Not documented today. In 2010 it was the secondary markup option for the Yahoo! Search Plugin, covering limited domains[42, 43], and the plugin's end was announced on 2010-10-04[45, 46]. No current page covers it and no page says it is unsupported.[43] |
| Twitter Cards | Not documented | Not documented. No Yahoo! JAPAN search page read names it: the seven help topics[2-9], the six Info Center categories and their 40 article titles[25-31], the search guide[50] and the developer network[48, 49]. Not documented is not the same as not supported.[2] |
“Not documented” means the pages read do not say; it does not mean the format is ignored.
Other formats and channels
DataRSSNot documented
Custom XML data feed announced in February 2010 as planned for spring 2010, to be submitted through Yahoo! Search Site Explorer[42]. No page read confirms that it launched; the plugin it fed was wound down later that year[45].[42]
meta robots, title and meta descriptionDocumented
Not structured data. Listed because these are the only page-level markup controls the engine's own pages document: meta robots noindex, nofollow, nosnippet, noarchive and noodp[39]; the title tag and meta description as inputs to the result title and description, which are generated automatically[12, 40, 41]; noindex, nofollow and robots.txt to keep images and video out[22]; robots.txt Disallow, Allow and wildcards[37, 38]. A rel=canonical article is listed in the tips category but was not fetched[31]. The Info Center pages date from 2008 to 2010; the help pages are undated.[39]
Which rich results can Yahoo! JAPAN Search show?
The research records 8 rich result types for Yahoo! JAPAN Search: 6 active and 2 deprecated. Each entry shows the schema.org types it is documented for, where the research records them. Valid markup can make a page eligible; it does not guarantee the result.
Active 6
ダイレクト検索 (Direct Search) Active
Documented for: no schema.org type recorded
Where: not stated
Japan. Own modules inside the results: Yahoo! JAPAN services such as weather, finance and transit, plus summary modules for people, works, stores and facilities[14]. No site owner markup or inclusion route is documented. Images come from user posts, information supply contracts, outsourcing contracts and crawlable public pages[15]. Errors go through a login-only contact form, which was not used[16].
ダイレクト検索の「掲載グルメサイト」「ネット予約サイト」 (gourmet site and online booking link lists in Direct Search) Active
Documented for: no schema.org type recorded
Where: not stated
Japan, restaurant searches. Gourmet site links come from restaurant pages supplied by companies under contract or from publicly crawlable gourmet site pages; booking links come only from companies under contract; both lists are ordered by a yearly user survey; additions and removals go through a login-only contact form and may be declined[17]. No markup route and no partner names are given.
店舗情報モジュール (store information module) Active
Documented for: no schema.org type recorded
Where: not stated
Japan. Business owners supply the data by registering with Yahoo!プレイス (https://yplace.yahoo.co.jp/); corrections go through the report link in the module or the Yahoo!マップ app and are not guaranteed[18]. No page markup route is documented.
拠点情報モジュール (location information module) Active
Documented for: no schema.org type recorded
Where: not stated
Japan. The help page gives ranking factors only (relevance, inferred intent, distance, ratings, user reactions and listing completeness, weighed by machine learning) and names no data source, listing route or markup[19].
掲載商品のおすすめ順 (recommended order of listed products) Active
Documented for: no schema.org type recorded
Where: not stated
Japan. The help page gives ranking factors only (relevance, popularity signals such as clicks, purchases and review counts, and trust signals such as image and title quality), kept separate from paid ad ranking; it names no data source, seller listing route or markup[20].
生成AIによる回答 (AI answers by Agent i) Active
Documented for: no schema.org type recorded
Where: not stated
Japan. Answers inside Yahoo!検索 are provided by the Agent i service, may be inaccurate and cannot be hidden by the user[21]. The usage guideline says the features run on generative AI from Vertex AI or OpenAI and that the shopping agent may draw on websites found through web search[53]. No page names the web sources, a site owner control or any markup[21, 53-55].
Deprecated 2show
Official Profile Deprecated
Japan. Verified public figures managed the images, profile details and announcements shown in the profile section of results through a verified LINE Official Account, not through page markup[52]. The end notice dated 2025-11-17 stopped new registrations that day and set the end of service for 2025-12-17[51].
Yahoo!検索プラグイン (Yahoo! Search Plugin) Deprecated
Formats: RDFa, Microformats
Japan. Historical. Partly released in December 2009; added images and site information to web results from data that site owners marked up in RDFa (main option) or Microformats (limited domains) with the SearchMonkey vocabularies, and a DataRSS feed was planned[42-44]. End of service announced on 2010-10-04 without an exact date[45]; the plugin development tool ended on 2010-11-17[46]. No required or recommended property list was captured from these pages: they show sample namespaces and three general RDFa requirements (namespace declarations, property attributes for text, rel attributes for links), and name no validator.
How does Yahoo! JAPAN Search crawl the web?
The research lists 6 crawler tokens for Yahoo! JAPAN Search: the names a site uses in robots.txt rules, with what each one does where the source says.
Y!J-BRU/VSIDX, Y!J-BRW, Y!J-ASR, Y!J-MMP/dscv, Y!J-WSC, Y!J-DLC[1]
How do I test my markup for Yahoo! JAPAN Search?
The research records no markup testing tool of its own for Yahoo! JAPAN Search.
Inject the World
Test a page for Yahoo! JAPAN Search
See what the research records for Yahoo! JAPAN Search against the structured data on your page (market: Japan).
What does Yahoo! JAPAN Search ask of site owners?
Its own vocabularies, tags and feeds
SearchMonkey vocabularies
Historical RDFa vocabularies recommended in 2010 for the Yahoo! Search Plugin and shared with Yahoo! Inc.'s SearchMonkey. Sample namespaces on the page: http://search.yahoo.com/searchmonkey/product/ , http://search.yahoo.com/searchmonkey/media/ and http://search.yahoo.com/searchmonkey-datatype/currency/ , used alongside RDF Schema, the review vocabulary http://purl.org/stuff/rev# , XML Schema datatypes and W3C vCard (http://www.w3.org/2006/vcard/ns#). The 2010 article says the crawler did not check whether the declared namespace schema files exist. These are not schema.org namespaces. The plugin's end was announced on 2010-10-04[45].[43]
DataRSS
Custom XML feed format for sending structured data to Yahoo! JAPAN through Yahoo!検索サイトエクスプローラー, announced in February 2010 as planned for spring 2010. Launch not confirmed by any page read.[42]
What could not be verified?
These claims about Yahoo! JAPAN Search came up in the research, but no page that could be read confirms them. They are kept apart, and nothing above rests on them.
Google rich result types, and the schema.org markup Google reads, carry over into Yahoo! JAPAN web results.
Why it is open: No Yahoo! JAPAN page says which Google result features it displays. The contract lets LY Corporation add its own functions and decide whether to display the results Google provides, so pass-through cannot be assumed in either direction.
Yahoo! JAPAN has a current page on structured data, rich results or a markup validator.
Why it is open: Nothing was found, but three topic lists[3, 4, 9] show 10 articles plus a load-more control the fetch tool cannot press, so those lists may be truncated. Absence on the pages read is not proof that no page exists.
The Yahoo! JAPAN ads crawler help page, linked from the crawler article[1], lists further user agent tokens.
Why it is open: The article body is rendered by script and was never returned. A blocked fetch, not absence.
How it was checked
Source 60 https://ads-help.yahoo-net.jp/s/article/H000044807 fetched three times, once with ?language=ja: each time only a loading shell with the header LINEヤフー広告 ヘルプ came back.
Further Yahoo! JAPAN crawler names exist: Y!J-BRZ/YATSHA, Y!J-SRD/1.0 and Y!J-MBS/1.0.
Why it is open: No LY Corporation page read lists them.
Yahoo!検索サイトエクスプローラー, the site owner tool named in 2010, has been discontinued, and DataRSS submission through it never launched or has ended.
Why it is open: No primary page read states the tool's status.
Yahoo! JAPAN Custom Search (カスタムサーチ), named in 2013 as the alternative to the closed search APIs[47], has ended.
Why it is open: DNS failure; no primary page read.
How it was checked
Source 62 https://custom.search.yahoo.co.jp/ : getaddrinfo ENOTFOUND. A web search listed that host under a title announcing the end of a service, which is not a fetched page.
LY Corporation's corporate history page records the 2010 move to Google's search engine.
Why it is open: Blocked fetch. The fact itself is confirmed by source 56 and by the history section of source 57, so only this page is unverified.
How it was checked
Source 61 https://www.lycorp.co.jp/ja/company/history/ : HTTP 403 Forbidden.
Which web sources feed the AI answers in Yahoo!検索, and whether site owners can opt out of them or influence them with markup.
Why it is open: The pages name the model providers and say shopping answers may draw on web search results, but give no source list, crawler, opt-out or markup guidance.
Sources
The pages the research used for Yahoo! JAPAN Search, numbered as cited above. Accessed November 10, 2026 unless shown.
- 1.ウェブページにアクセスするシステムのユーザーエージェントについて · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 2.Yahoo!検索ヘルプ · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 3.ウェブ検索について · LY Corporation (Yahoo!検索ヘルプ) · in JapanesePartly read
- 4.Yahoo!検索全般 · LY Corporation (Yahoo!検索ヘルプ) · in JapanesePartly read
- 5.画像検索について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 6.動画検索について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 7.そのほかの検索機能について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 8.AIによる回答について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 9.こんなときは · LY Corporation (Yahoo!検索ヘルプ) · in JapanesePartly read
- 10.インデックスの更新について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 11.表示順について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 12.検索結果に表示されるタイトルや説明文を変更したい · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 13.検索結果の見方 · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 14.ダイレクト検索とは · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 15.ダイレクト検索の画像・写真の表示について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 16.ダイレクト検索に表示される情報に誤りがある場合 · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 17.ダイレクト検索に表示される「掲載グルメサイト」「ネット予約サイト」について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 18.検索結果に表示される店舗情報モジュールの修正について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 19.拠点情報モジュールの表示順について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 20.掲載商品のおすすめ順について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 21.Yahoo!検索における生成AIを用いた回答生成機能について · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 22.私のホームページの画像、動画が検索されないようにしたい · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 23.検索結果に情報を表示しないようにするには · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 24.検索結果に表示されたサイトについて問い合わせたい · LY Corporation (Yahoo!検索ヘルプ) · in Japanese
- 25.インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 26.基本事項 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 27.クローラー · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 28.サイトマップ · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 29.インデックス · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 30.検索結果 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 31.ティップス · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese
- 32.特定のウェブページを検索結果から削除 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 9, 2010
- 33.クローラー名(ユーザーエージェント名)の確認方法 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 34.検索エンジンの主要なシステム構成 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 35.クローラーによるウェブページの巡回と収集 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 36.ロボッツ・エクスクルージョン・プロトコルとクローラー - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 37.サイト単位、ディレクトリ単位での巡回の拒否設定 1 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 38.サイト単位、ディレクトリ単位での巡回の拒否設定 2 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 39.メタタグの記述と検索エンジン - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 40.検索結果に表示されるタイトルやサマリーの変更 - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated November 24, 2010
- 41.検索結果でウェブページの表示順序を上げるには - インフォセンター - Yahoo!検索 · LY Corporation (Yahoo!検索 インフォセンター) · in Japanese · updated September 17, 2008
- 42.「Yahoo!検索プラグイン」をより有効に活用する方法 · LY Corporation (Yahoo! JAPAN Tech Blog) · in Japanese · updated February 1, 2010
- 43.Yahoo!検索プラグインとメタデータの埋め込み · LY Corporation (Yahoo! JAPAN Tech Blog) · in Japanese · updated February 16, 2010
- 44.Yahoo!検索プラグインの開発方法 · LY Corporation (Yahoo! JAPAN Tech Blog) · in Japanese · updated June 11, 2010
- 45.「Yahoo!検索プラグイン」サービス終了のお知らせ · LY Corporation (Yahoo!デベロッパーネットワーク) · in Japanese · updated October 4, 2010
- 46.検索プラグイン開発ツールサービス終了 · LY Corporation (Yahoo!デベロッパーネットワーク) · in Japanese · updated November 17, 2010
- 47.デベロッパー向けYahoo!検索APIの提供終了 · LY Corporation (Yahoo!デベロッパーネットワーク) · in Japanese · updated August 14, 2013
- 48.Yahoo!デベロッパーネットワーク · LY Corporation (Yahoo!デベロッパーネットワーク) · in Japanese
- 49.APIドキュメント - Yahoo!デベロッパーネットワーク · LY Corporation (Yahoo!デベロッパーネットワーク) · in Japanese
- 50.Yahoo!検索ガイド - Yahoo! JAPAN · LY Corporation (Yahoo!検索ガイド) · in Japanese
- 51.【重要なお知らせ】「Official Profile」サービス終了のご案内 · LY Corporation (Yahoo!検索ガイド) · in Japanese · updated November 17, 2025
- 52.Yahoo!検索が提供する「Official Profile」機能について · LY Corporation (Yahoo!検索ガイド) · in Japanese · updated November 17, 2025
- 53.生成AIを用いた回答・画像生成機能の利用に関するガイドライン · LY Corporation (Yahoo!検索) · in Japanese
- 54.Agent iヘルプ · LY Corporation (Agent iヘルプ) · in Japanese
- 55.Agent iにおける回答について · LY Corporation (Agent iヘルプ) · in Japanese
- 56.Yahoo! JAPANの検索サービスにおけるグーグルの検索エンジンと検索連動型広告配信システムの採用、ならびにYahoo! JAPANからグーグルへのデータ提供について · Yahoo Japan Corporation (now LY Corporation), press release · in Japanese · updated July 27, 2010
- 57.有価証券報告書 第31期(自 2025年4月1日 至 2026年3月31日) LINEヤフー株式会社 · LY Corporation (securities report filed on EDINET, Financial Services Agency) · in Japanese · updated June 18, 2026Partly read
- 58.Yahoo! JAPAN のより良い検索と広告サービスのために · Google (Google Japan Blog) · in Japanese · updated July 27, 2010
- 59.LINEとヤフー、検索事業における連携を強化 ユーザーの検索体験向上のため「LINE Search」web検索を「Yahoo!検索」へ切り替え · LINE Corporation and Yahoo Japan Corporation (now LY Corporation), press release · in Japanese · updated June 14, 2023
- 60.ads-help.yahoo-net.jp/s/article/H000044807 · LY Corporation (LINEヤフー広告 ヘルプ) · in JapaneseCould not be fetched
- 61.www.lycorp.co.jp/ja/company/history · LY Corporation · in JapaneseCould not be fetched
- 62.custom.search.yahoo.co.jp · LY Corporation (Yahoo! JAPAN) · in JapaneseCould not be fetched
Market share figures: StatCounter Global Stats, search engine market share, October 2026, licensed CC BY-SA 3.0.