BlogConfiguring URL Parameters in Webmaster Tools
Tuesday, August 14, 2012 It’s been a while since we published this blog post. Some of the information may be…
Blog
BlogWebsite testing and Google search
Thursday, August 09, 2012 We’ve gotten several questions recently about whether website testing—such as A/B or multivariate testing—affects a site’s…
BlogDomain verification using Cname records
Thursday, August 02, 2012 It’s been a while since we published this blog post. Some of the information may be…
BlogIntroducing the Structured Data Dashboard
Wednesday, August 01, 2012 It’s been a while since we published this blog post. Some of the information may be…
BlogNew notifications about inbound links
Friday, July 27, 2012 Lots of site owners use our webmaster console to see how their site is doing in…
BlogBehold Google index secrets, revealed!
Tuesday, July 24, 2012 Since Googlebot was born, webmasters around the world have been asking one question: Google, oh, Google,…
On web semantics
Monday, July 16, 2012 In web development context, semantics refers to semantic markup, which means markup used according to its…
New Crawl Error alerts from Webmaster Tools
Thursday, July 12, 2012 Today we’re rolling out Crawl Error alerts to help keep you informed of the state of…
Adding associates to manage your YouTube presence
Friday, June 29, 2012 It’s been a while since we published this blog post. Some of the information may be…
BlogSEO essentials for startups in under 10 minutes
Tuesday, June 26, 2012 Wondering how to be search-friendly but lacking time for SEO research? We’d like to help! Meta…
BlogDownload to Google Spreadsheet from Webmaster Tools
Tuesday, June 19, 2012 Webmaster Tools now has a new download option for exporting your data directly to a Google…
For webmasters: Google+ and the +1 button 101
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
Recommendations for building smartphone-optimized websites
Wednesday, June 06, 2012 Every day more and more smartphones get activated and more websites are producing smartphone-optimized content. Since…
Easier domain verification
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogNow you can polish up Google’s translation of your website
Thursday, May 31, 2012 It’s been a while since we published this blog post. Some of the information may be…
BlogMultilingual and multinational site annotations in Sitemaps
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogIntroducing Webmaster Academy
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
Making more pages load instantly
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogSorting and Filtering Results in Custom Search
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogNavigation, Dashboard and Home page
Monday, May 07, 2012 After announcing Webmaster Tools spring cleaning earlier this quarter, it’s time to do the job. There…
BlogCoding guidelines for HTML and CSS
Wednesday, May 02, 2012 Great code has many attributes. It’s effective, efficient, maintainable, elegant. When working on code with many…
BlogResponsive design – harnessing the power of media queries
Tuesday, May 01, 2012 We love data, and spend a lot of time monitoring the analytics on our websites. Any…
BlogEven more Top Search Queries data
Thursday, April 26, 2012 We recently updated the Top Search Queries data to take into account the average top position,…
画像に関する1000語
この記事の公開から時間が経過しています。情報が古くなっている可能性があります（画像が表示されない、リンクが機能していないなど）。画像に関するベストプラクティスのドキュメントをご確認ください。 2012年4月25日 水曜日 創造性は私たちの生活において重要な側面であり、ほぼすべての活動を豊かにしてくれます。例えば、チームメイトに見た目も素敵なコーヒーを淹れたいけれど、創造力が枯渇しているとき。そんな時こそ、私がGoogle 画像検索でインスピレーションを探す多くの機会の一つです。 検索結果に表示される画像は、ブロガー、メディア、ストックフォトサイトなど、あらゆる規模のパブリッシャーがHTMLページに埋め込んだものです。Googleは、BMP、GIF、JPEG、PNG、WebP、およびSVG形式の画像をインデックスできます。 しかし、Googleはどのようにしてその画像が「コーヒー」であり「紅茶」ではないと判断しているのでしょうか？アルゴリズムが画像をインデックスする際、その画像が配置されているページのテキストコンテンツを読み取り、画像についての理解を深めます。また、ページのタイトルや本文も確認します。さらに、画像のファイル名、その画像へのアンカーテキスト、そして「altテキスト」からも情報を得ることがあります。場合によってはコンピュータビジョンを使用して画像を解析したり、画像サイトマップで提供されたキャプションがページ内に存在すれば、それを活用することもあります。 画像を適切にインデックスさせるために、以下の点を確認してください： 画像が埋め込まれているHTMLページと、画像ファイル自体の両方がクロール可能であること。 画像がサポートされている形式（BMP、GIF、JPEG、PNG、WebP、SVG）であること。 さらに、以下を推奨します： 画像ファイル名が画像の内容に関連していること。 画像のalt属性が、人間にとって分かりやすい説明になっていること。 HTMLページのテキストコンテンツや、画像の周囲にあるテキストが、画像の内容と関連していること。 よく寄せられる質問への回答をいくつか紹介します： Q: Googlebot-Imageではなく、Googlebotが画像をクロールしているのはなぜですか？ A: 一般的に、URLが画像に直結しているか不明確な場合に、まずGooglebotがそのURLをクロールします。そのURLが画像であると判断されれば、通常はGooglebot-Imageが再訪問します。そのため、GooglebotとGooglebot-Imageの両方が画像やページをクロールできるようにしておくのが賢明です。 Q:…
BlogHow to move your content to a new location
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogAnother step to reward high-quality sites
Tuesday, April 24, 2012 Google has said before that search engine optimization, or SEO, can be positive and constructive —and…
BlogWebmaster Tools spring cleaning
Tuesday, April 24, 2012 Webmaster Tools added lots of new functionality over the past year, such as improvements to Sitemaps…
BlogUpdates to rich snippets
Monday, April 16, 2012 It’s been a while since we published this blog post. Some of the information may be…
Five common SEO mistakes (and six good ideas!)
Tuesday, March 20, 2012 To help you avoid common mistakes webmasters face with regard to search engine optimization (SEO), I…
BlogUpcoming changes in Google’s HTTP Referrer
Monday, March 19, 2012 Protecting users’ privacy is a priority for us and it’s helped drive recent changes. Helping users…
BlogVideo about pagination with rel=”next” and rel=”prev”
Tuesday, March 13, 2012 It’s been a while since we published this blog post. Some of the information may be…
BlogCrawl Errors: The Next Generation
Monday, March 12, 2012 Crawl errors is one of the most popular features in Webmaster Tools, and today we’re rolling…
BlogKeeping your hosting service valuable for searchers
Tuesday, March 06, 2012 Web hosting services that are available without payment can be great! Many of these services have…
Safely share access to your site in Webmaster Tools
Tuesday, March 06, 2012 We just launched a new feature that allows you as a verified site owner to grant…
BlogUsing schema.org markup for videos
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogPreparing your site for a traffic spike
Thursday, February 09, 2012 It’s a moment any site owner both looks forward to, and dreads: a huge surge in…
BlogMore Options for Google+ Badges
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogWhat’s new with Sitemaps
Thursday, January 26, 2012 Sitemaps are a way to tell Google about pages on your site. Webmaster Tools’ Sitemaps feature…
BlogMaking form-filling faster, easier and smarter
Wednesday, January 25, 2012 One of the biggest bottlenecks on any conversion funnel is filling out an online form –…
BlogUpdate to Top Search Queries data
Wednesday, January 25, 2012 Starting today, we’re updating our Top Search Queries feature to make it better match expectations about…
BlogPage layout algorithm improvement
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogBetter page titles in search results
Thursday, January 12, 2012 Check out out up-to-date documentation about title links. Page titles are an important part of our…
Download search queries data using Python
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
Website user research and testing on the cheap
Wednesday, December 21, 2011 As the team responsible for tens of thousands of Google’s informational web pages, the Webmaster Team…
BlogRich Snippets Instructional Videos
Friday, December 16, 2011 When users come to Google, they have a pretty good idea of what they’re looking for,…
BlogIntroducing smartphone Googlebot-Mobile
Thursday, December 15, 2011 It’s been a while since we published this blog post. Some of the information may be…
BlogClicks and impressions for authors
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…
BlogTips for hosting providers and webmasters
Tuesday, December 06, 2011 It’s been a while since we published this blog post. Some of the information may be…
BlogNew markup for multilingual content
Monday, December 05, 2011 Many websites serve users from around the world. There are different approaches to serving content appropriate…
BlogGrow your audience with Google+
It’s been a while since we published this blog post. Some of the information may be outdated (for example, some…