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Written by Oleksandr Gavenko (AKA gavenkoa), compiled on 2017-01-30 from rev ccaa2f364422+.

WEB SEO (search engine optimisation)

General search engines

Major search engines are:

Major local search engine are:

Search engine webmaster tools

https://www.google.com/webmasters/tools/home
Google webmaster tools.
https://www.bing.com/webmaster/
Bind webmaster tools.
https://webmaster.yandex.ru/
Yandex webmaster tools.

SEO tips

https://support.google.com/webmasters/answer/40349
Steps to a Google-friendly site.
https://support.google.com/webmasters/answer/139066
Use canonical URLs
https://en.wikipedia.org/wiki/Canonical_link_element
Wiki article.
https://support.google.com/webmasters/answer/1663744
Indicate paginated content.
https://support.google.com/webmasters/answer/76329
Keep a simple URL structure.
https://www.bing.com/webmaster/help/webmaster-guidelines-30fba23a
Bing Webmaster Guidelines.
https://yandex.ru/support/webmaster/recommendations/intro.xml
Рекомендации по созданию сайтов от Yandex.
https://support.google.com/webmasters/answer/35769
Google Webmaster Guidelines.

http://webmasters.stackexchange.com/questions/22877/seo-where-do-i-start/ http://webmasters.stackexchange.com/questions/10281/seo-tips-and-tricks-for-web-developers http://webmasters.stackexchange.com/questions/2/what-are-the-best-ways-to-increase-a-sites-position-in-google http://webmasters.stackexchange.com/questions/237/basic-seo-optimization

SERP structure

All popular search providers use title tag content as text for main link to result entry and meta name="description" or relevant page piece for description.

Also title is used in browser window title bar and as bookmark title.

https://en.wikipedia.org/wiki/Search_engine_results_page
Wikiperia article.
https://www.w3.org/QA/Tips/good-titles.html
<title>: the most important element of a quality Web page.
https://www.w3.org/QA/Tips/Use_h1_for_Title
Use <h1> for top-level heading.

Informing search engine about site structure

http://www.example.org/sitemap.xml
http://www.example.org/robots.txt

robots.txt

Start line with # to commet it out.

Disable all robots (that respect robots.txt):

User-agent: *
Disallow: /

To allow all robots complete access:

User-agent: *
Disallow:

To allow a single robot:

User-agent: Google
Disallow:

User-agent: *
Disallow: /

All valuable search engines support Allow and Sitemap tags:

User-agent: *
Allow: /
Sitemap: http://example.com/sitemap1.xml
Sitemap: http://example.com/my_sitemap2.xml

The longer path the higher priority of Allow and Disallow tags.

http://www.robotstxt.org/orig.html
Original specification. Only User-agent and Disallow tags supported.
http://robotstxt.org.ru/
Russian followup to http://www.robotstxt.org
https://developers.google.com/webmasters/control-crawl-index/docs/robots_txt
Google extension specification.
https://yandex.ru/support/webmaster/controlling-robot/robots-txt.xml
Yandex extension specification.
http://en.wikipedia.org/wiki/Robots.txt
Wiki article.

meta robots

Instruction to not index current page:

<meta name="robots" content="noindex">

Instruction to not follow links on current page:

<meta name="robots" content="nofollow">

Pair combinations:

<meta name="robots" content="noindex, nofollow">
<meta name="robots" content="noindex, follow">
<meta name="robots" content="index, nofollow">
<meta name="robots" content="index, follow">

sitemap

Alexa.

Statistics (most useful Top Search Queries):

http://www.alexa.com/siteinfo/DOMAIN

Google.

http://www.google.com/trends

Yahoo.

Give backlink (this page redirect to siteexplorer.search.yahoo.com):

linkdomain:DOMAIN -site:DOMAIN