Création des Logiciels de gestion d'Entreprise, Création et référencement des sites web, Réseaux et Maintenance, Conception
from web contents: Google now indexes SVG 2013
salam every one, this is a topic from google web master centrale blog: Webmaster Level: All
You can now use Google search to find SVG documents. SVG is an open, XML-based format for vector graphics with support for interactive elements. We’re big fans of open standards, and our mission is to organize the world’s information, so indexing SVG is a natural step.
We index SVG content whether it is in a standalone file or embedded directly in HTML. The web is big, so it may take some time before we crawl and index most SVG files, but as of today you may start seeing them in your search results. If you want to see it yourself, try searching for [sitemap site:fastsvg.com] or [HideShow site:svg-whiz.com]
If you host SVG files and you wish to exclude them from Google’s search results, you can use the “X-Robots-Tag: noindex” directive in the HTTP header.
Check out Webmaster Central for a full list of file types we support.
this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
You can now use Google search to find SVG documents. SVG is an open, XML-based format for vector graphics with support for interactive elements. We’re big fans of open standards, and our mission is to organize the world’s information, so indexing SVG is a natural step.
We index SVG content whether it is in a standalone file or embedded directly in HTML. The web is big, so it may take some time before we crawl and index most SVG files, but as of today you may start seeing them in your search results. If you want to see it yourself, try searching for [sitemap site:fastsvg.com] or [HideShow site:svg-whiz.com]
If you host SVG files and you wish to exclude them from Google’s search results, you can use the “X-Robots-Tag: noindex” directive in the HTTP header.
Check out Webmaster Central for a full list of file types we support.
this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
from web contents: Target visitors or search engines? 2013
salam every one, this is a topic from google web master centrale blog: Last Friday afternoon, I was able to catch the end of the Blog Business Summit in Seattle. At the session called "Blogging and SEO Strategies," John Battelle brought up a good point. He said that as a writer, he doesn't want to have to think about all of this search engine optimization stuff. Dave Taylor had just been talking about order of words in title tags and keyword density and using hyphens rather than underscores in URLs.
We agree, which is why you'll find that the main point in our webmaster guidelines is to make sites for visitors, not for search engines. Visitor-friendly design makes for search engine friendly design as well. The team at Google webmaster central talks a lot with site owners who care a lot about the details of how Google crawls and indexes sites (hyphens and underscores included), but many site owners out there are just concerned with building great sites. The good news is that the guidelines and tips about how Google crawls and indexes sites come down to wanting great content for our search results.
In the spirit of John Battelle's point, here's a recap of some quick tips for ensuring your site is friendly for visitors.
Make good use of page titles
This is true of the main heading on the page itself, but is also true of the title that appears in the browser's title bar.
Whenever possible, ensure each page has a unique title that describes the page well. For instance, if your site is for your store "Buffy's House of Sofas", a visitor may want to bookmark your home page and the order page for your red, fluffy sofa. If all of your pages have the same title: "Wecome to my site!", then a visitor will have trouble finding your site again in the bookmarks. However, if your home page has the title "Buffy's House of Sofas" and your red sofa page has the title "Buffy's red fluffy sofa", then visitors can glance at the title to see what it's about and can easily find it in the bookmarks later. And if your visitors are anything like me, they may have several browser tabs open and appreciate descriptive titles for easier navigation.
This simple tip for visitors helps search engines too. Search engines index pages based on the words contained in them, and including descriptive titles helps search engines know what the pages are about. And search engines often use a page's title in the search results. "Welcome to my site" may not entice searchers to click on your site in the results quite so much as "Buffy's House of Sofas".
Write with words
Images, flash, and other multimedia make for pretty web pages, but make sure your core messages are in text or use ALT text to provide textual descriptions of your multimedia. This is great for search engines, which are based on text: searchers enter search queries as word, after all. But it's also great for visitors, who may have images or Flash turned off in their browsers or might be using screen readers or mobile devices. You can also provide HTML versions of your multimedia-based pages (if you do that, be sure to block the multimedia versions from being indexed using a robots.txt file).
Make sure the text you're talking about is in your content
Visitors may not read your web site linearly like they would a newspaper article or book. Visitors may follow links from elsewhere on the web to any of your pages. Make sure that they have context for any page they're on. On your order page, don't just write "order now!" Write something like "Order your fluffy red sofa now!" But write it for people who will be reading your site. Don't try to cram as many words in as possible, thinking search engines can index more words that way. Think of your visitors. What are they going to be searching for? Is your site full of industry jargon when they'll be searching for you with more informal words?
As I wrote in that guest post on Matt Cutts' blog when I talked about hyphens and underscores:
You know what your site’s about, so it may seem completely obvious to you when you look at your home page. But ask someone else to take a look and don’t tell them anything about the site. What do they think your site is about?
I know -- this post was supposed to be about writing content, not technical details. But visitors can't read your site if they can't access it. If the network is down or your server returns errors when someone tries to access the pages of your site, it's not just search engines who will have trouble. Fortunately, webmaster tools makes it easy. We'll let you know if we've had any trouble accessing any of the pages. We tell you the specific page we couldn't access and the exact error we got. These problems aren't always easy to fix, but we try to make them easy to find.this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
We agree, which is why you'll find that the main point in our webmaster guidelines is to make sites for visitors, not for search engines. Visitor-friendly design makes for search engine friendly design as well. The team at Google webmaster central talks a lot with site owners who care a lot about the details of how Google crawls and indexes sites (hyphens and underscores included), but many site owners out there are just concerned with building great sites. The good news is that the guidelines and tips about how Google crawls and indexes sites come down to wanting great content for our search results.
In the spirit of John Battelle's point, here's a recap of some quick tips for ensuring your site is friendly for visitors.
Make good use of page titles
This is true of the main heading on the page itself, but is also true of the title that appears in the browser's title bar.
Whenever possible, ensure each page has a unique title that describes the page well. For instance, if your site is for your store "Buffy's House of Sofas", a visitor may want to bookmark your home page and the order page for your red, fluffy sofa. If all of your pages have the same title: "Wecome to my site!", then a visitor will have trouble finding your site again in the bookmarks. However, if your home page has the title "Buffy's House of Sofas" and your red sofa page has the title "Buffy's red fluffy sofa", then visitors can glance at the title to see what it's about and can easily find it in the bookmarks later. And if your visitors are anything like me, they may have several browser tabs open and appreciate descriptive titles for easier navigation.
This simple tip for visitors helps search engines too. Search engines index pages based on the words contained in them, and including descriptive titles helps search engines know what the pages are about. And search engines often use a page's title in the search results. "Welcome to my site" may not entice searchers to click on your site in the results quite so much as "Buffy's House of Sofas".
Write with wordsImages, flash, and other multimedia make for pretty web pages, but make sure your core messages are in text or use ALT text to provide textual descriptions of your multimedia. This is great for search engines, which are based on text: searchers enter search queries as word, after all. But it's also great for visitors, who may have images or Flash turned off in their browsers or might be using screen readers or mobile devices. You can also provide HTML versions of your multimedia-based pages (if you do that, be sure to block the multimedia versions from being indexed using a robots.txt file).
Make sure the text you're talking about is in your content
Visitors may not read your web site linearly like they would a newspaper article or book. Visitors may follow links from elsewhere on the web to any of your pages. Make sure that they have context for any page they're on. On your order page, don't just write "order now!" Write something like "Order your fluffy red sofa now!" But write it for people who will be reading your site. Don't try to cram as many words in as possible, thinking search engines can index more words that way. Think of your visitors. What are they going to be searching for? Is your site full of industry jargon when they'll be searching for you with more informal words?
As I wrote in that guest post on Matt Cutts' blog when I talked about hyphens and underscores:
You know what your site’s about, so it may seem completely obvious to you when you look at your home page. But ask someone else to take a look and don’t tell them anything about the site. What do they think your site is about?
Consider this text:
“We have hundreds of workshops and classes available. You can choose the workshop that is right for you. Spend an hour or a week in our relaxing facility.”
Will this site show up for searches for [cooking classes] or [wine tasting workshops] or even [classes in Seattle]? It may not be as obvious to visitors (and search engine bots) what your page is about as you think.
Along those same lines, does your content use words that people are searching for? Does your site text say “check out our homes for sale” when people are searching for [real estate in Boston]?
Make sure your pages are accessibleI know -- this post was supposed to be about writing content, not technical details. But visitors can't read your site if they can't access it. If the network is down or your server returns errors when someone tries to access the pages of your site, it's not just search engines who will have trouble. Fortunately, webmaster tools makes it easy. We'll let you know if we've had any trouble accessing any of the pages. We tell you the specific page we couldn't access and the exact error we got. These problems aren't always easy to fix, but we try to make them easy to find.this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
from web contents: Better geographic choices for webmasters 2013
salam every one, this is a topic from google web master centrale blog: Written by Amanda Camp, Webmaster Tools and Trystan Upstill, International Search Quality Team
Starting today Google Webmaster Tools helps you better control the country association of your content on a per-domain, per-subdomain, or per-directory level. The information you give us will help us determine how your site appears in our country-specific search results, and also improves our search results for geographic queries.
We currently only allow you to associate your site with a single country and location. If your site is relevant to an even more specific area, such as a particular state or region, feel free to tell us that. Or let us know if your site isn't relevant to any particular geographic location at all. If no information is entered in Webmaster Tools, we'll continue to make geographic associations largely based on the top-level domain (e.g. .co.uk or .ca) and the IP of the webserver from which the context was served.
For example, if we wanted to associate www.google.com with Hungary:
But you don't want www.google.com/webmasters/tools" associated with any country...
This feature is restricted for sites with a country code top level domain, as we'll always associate that site with the country domain. (For example, google.ru will always be the version of Google associated with Russia.)
Note that in the same way that Google may show your business address if you register your brick-and-mortar business with the Google Local Business Center, we may show the information that you give us publicly.
This feature was largely initiated by your feedback, so thanks for the great suggestion. Google is always committed towards helping more sites and users get better and more relevant results. This is a new step as we continue to think about how to improve searches around the world.
We encourage you to tell us what you think in the Webmaster Tools section of our discussion group.this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
Starting today Google Webmaster Tools helps you better control the country association of your content on a per-domain, per-subdomain, or per-directory level. The information you give us will help us determine how your site appears in our country-specific search results, and also improves our search results for geographic queries.
We currently only allow you to associate your site with a single country and location. If your site is relevant to an even more specific area, such as a particular state or region, feel free to tell us that. Or let us know if your site isn't relevant to any particular geographic location at all. If no information is entered in Webmaster Tools, we'll continue to make geographic associations largely based on the top-level domain (e.g. .co.uk or .ca) and the IP of the webserver from which the context was served.
For example, if we wanted to associate www.google.com with Hungary:
But you don't want www.google.com/webmasters/tools" associated with any country...
This feature is restricted for sites with a country code top level domain, as we'll always associate that site with the country domain. (For example, google.ru will always be the version of Google associated with Russia.)
Note that in the same way that Google may show your business address if you register your brick-and-mortar business with the Google Local Business Center, we may show the information that you give us publicly.
This feature was largely initiated by your feedback, so thanks for the great suggestion. Google is always committed towards helping more sites and users get better and more relevant results. This is a new step as we continue to think about how to improve searches around the world.
We encourage you to tell us what you think in the Webmaster Tools section of our discussion group.this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
from web contents: Improved Flash indexing 2013
salam every one, this is a topic from google web master centrale blog:
We've received numerous requests to improve our indexing of Adobe Flash files. Today, Ron Adler and Janis Stipins—software engineers on our indexing team—will provide us with more in-depth information about our recent announcement that we've greatly improved our ability to index Flash.
Q: Which Flash files can Google better index now?
We've improved our ability to index textual content in SWF files of all kinds. This includes Flash "gadgets" such as buttons or menus, self-contained Flash websites, and everything in between.
Q: What content can Google better index from these Flash files?
All of the text that users can see as they interact with your Flash file. If your website contains Flash, the textual content in your Flash files can be used when Google generates a snippet for your website. Also, the words that appear in your Flash files can be used to match query terms in Google searches.
In addition to finding and indexing the textual content in Flash files, we're also discovering URLs that appear in Flash files, and feeding them into our crawling pipeline—just like we do with URLs that appear in non-Flash webpages. For example, if your Flash application contains links to pages inside your website, Google may now be better able to discover and crawl more of your website.
Q: What about non-textual content, such as images?
At present, we are only discovering and indexing textual content in Flash files. If your Flash files only include images, we will not recognize or index any text that may appear in those images. Similarly, we do not generate any anchor text for Flash buttons which target some URL, but which have no associated text.
Also note that we do not index FLV files, such as the videos that play on YouTube, because these files contain no text elements.
Q: How does Google "see" the contents of a Flash file?
We've developed an algorithm that explores Flash files in the same way that a person would, by clicking buttons, entering input, and so on. Our algorithm remembers all of the text that it encounters along the way, and that content is then available to be indexed. We can't tell you all of the proprietary details, but we can tell you that the algorithm's effectiveness was improved by utilizing Adobe's new Searchable SWF library.
Q: What do I need to do to get Google to index the text in my Flash files?
Basically, you don't need to do anything. The improvements that we have made do not require any special action on the part of web designers or webmasters. If you have Flash content on your website, we will automatically begin to index it, up to the limits of our current technical ability (see next question).
That said, you should be aware that Google is now able to see the text that appears to visitors of your website. If you prefer Google to ignore your less informative content, such as a "copyright" or "loading" message, consider replacing the text within an image, which will make it effectively invisible to us.
Q: What are the current technical limitations of Google's ability to index Flash?
There are three main limitations at present, and we are already working on resolving them:
1. Googlebot does not execute some types of JavaScript. So if your web page loads a Flash file via JavaScript, Google may not be aware of that Flash file, in which case it will not be indexed.
2. We currently do not attach content from external resources that are loaded by your Flash files. If your Flash file loads an HTML file, an XML file, another SWF file, etc., Google will separately index that resource, but it will not yet be considered to be part of the content in your Flash file.
3. While we are able to index Flash in almost all of the languages found on the web, currently there are difficulties with Flash content written in bidirectional languages. Until this is fixed, we will be unable to index Hebrew language or Arabic language content from Flash files.
We're already making progress on these issues, so stay tuned!
Update in July 2008: Everyone, thanks for your great questions and feedback. Our focus is to improve search quality for all users, and with better Flash indexing we create more meaningful search results. Listed below, we’ve also answered some of the most prevalent questions. Thanks again!
Flash site in search results before improvements
Flash site after improved indexing, querying [nasa deep impact animation]
Helping us access and index your Flash files
Interaction of HTML pages and Flash
Indexing large Flash files
More details about our Flash indexing algorithm
We've received numerous requests to improve our indexing of Adobe Flash files. Today, Ron Adler and Janis Stipins—software engineers on our indexing team—will provide us with more in-depth information about our recent announcement that we've greatly improved our ability to index Flash.
Q: Which Flash files can Google better index now?
We've improved our ability to index textual content in SWF files of all kinds. This includes Flash "gadgets" such as buttons or menus, self-contained Flash websites, and everything in between.
Q: What content can Google better index from these Flash files?
All of the text that users can see as they interact with your Flash file. If your website contains Flash, the textual content in your Flash files can be used when Google generates a snippet for your website. Also, the words that appear in your Flash files can be used to match query terms in Google searches.
In addition to finding and indexing the textual content in Flash files, we're also discovering URLs that appear in Flash files, and feeding them into our crawling pipeline—just like we do with URLs that appear in non-Flash webpages. For example, if your Flash application contains links to pages inside your website, Google may now be better able to discover and crawl more of your website.
Q: What about non-textual content, such as images?
At present, we are only discovering and indexing textual content in Flash files. If your Flash files only include images, we will not recognize or index any text that may appear in those images. Similarly, we do not generate any anchor text for Flash buttons which target some URL, but which have no associated text.
Also note that we do not index FLV files, such as the videos that play on YouTube, because these files contain no text elements.
Q: How does Google "see" the contents of a Flash file?
We've developed an algorithm that explores Flash files in the same way that a person would, by clicking buttons, entering input, and so on. Our algorithm remembers all of the text that it encounters along the way, and that content is then available to be indexed. We can't tell you all of the proprietary details, but we can tell you that the algorithm's effectiveness was improved by utilizing Adobe's new Searchable SWF library.
Q: What do I need to do to get Google to index the text in my Flash files?
Basically, you don't need to do anything. The improvements that we have made do not require any special action on the part of web designers or webmasters. If you have Flash content on your website, we will automatically begin to index it, up to the limits of our current technical ability (see next question).
That said, you should be aware that Google is now able to see the text that appears to visitors of your website. If you prefer Google to ignore your less informative content, such as a "copyright" or "loading" message, consider replacing the text within an image, which will make it effectively invisible to us.
Q: What are the current technical limitations of Google's ability to index Flash?
There are three main limitations at present, and we are already working on resolving them:
1. Googlebot does not execute some types of JavaScript. So if your web page loads a Flash file via JavaScript, Google may not be aware of that Flash file, in which case it will not be indexed.
2. We currently do not attach content from external resources that are loaded by your Flash files. If your Flash file loads an HTML file, an XML file, another SWF file, etc., Google will separately index that resource, but it will not yet be considered to be part of the content in your Flash file.
3. While we are able to index Flash in almost all of the languages found on the web, currently there are difficulties with Flash content written in bidirectional languages. Until this is fixed, we will be unable to index Hebrew language or Arabic language content from Flash files.
We're already making progress on these issues, so stay tuned!
Update in July 2008: Everyone, thanks for your great questions and feedback. Our focus is to improve search quality for all users, and with better Flash indexing we create more meaningful search results. Listed below, we’ve also answered some of the most prevalent questions. Thanks again!
Flash site in search results before improvements
Flash site after improved indexing, querying [nasa deep impact animation]
Helping us access and index your Flash files
@fintan: We verified with Adobe that the textual content from legacy sites, such as those scripted with AS1 and AS2, can be indexed by our new algorithm.
@andrew, jonny m, erichazann, mike, ledge, stu, rex, blog, dis: For our July 1st launch, we didn't enable Flash indexing for Flash files embedded via SWFObject. We're now rolling out an update that enables support for common JavaScript techniques for embedding Flash, including SWFObject and SWFObject2.
@mike: At this time, content loaded dynamically from resource files is not indexed. We’ve noted this feature request from several webmasters -- look for this in a near future update.
Update on July 29, 1010: Please note that our ability to load external resources is live.
Interaction of HTML pages and Flash
@captain cuisine: The text found in Flash files is treated similarly to text found in other files, such as HTML, PDFs, etc. If the Flash file is embedded in HTML (as many of the Flash files we find are), its content is associated with the parent URL and indexed as single entity.
@jeroen: Serving the same content in Flash and an alternate HTML version could cause us to find duplicate content. This won't cause a penalty -- we don’t lower a site in ranking because of duplicate content. Be aware, though, that search results will most likely only show one version, not both.
@All: We’re trying to serve users the most relevant results possible regardless of the file type. This means that standalone Flash, HTML with embedded Flash, HTML only, PDFs, etc., can all have the potential to be returned in search results.
Indexing large Flash files
@dsfdgsg: We’ve heard requests for deep linking (linking to specific content inside file) not just for Flash results, but also for other large documents and presentations. In the case of Flash, the ability to deep link will require additional functionality in Flash with which we integrate.
@All: The majority of the existing Flash files on the web are fine in regard to filesize. It shouldn’t be too much of a concern.
More details about our Flash indexing algorithm
@brian, marcos, bharath: Regarding ActionScript, we’re able to find new links loaded through ActionScript. We explore Flash like a website visitor does, we do not decompile the SWF file. Unless you're making ActionScript visible to users, Google will not expose ActionScript code.this is a topic published in 2013... to get contents for your blog or your forum, just contact me at: devnasser@gmail.com
@dlocks: We respect rel="nofollow" wherever we encounter it in HTML.