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200 SEO Factors : Google’s Search Algorithm Variables
At WebmasterWorld’s PubCon, or just “PubCon“,, Matt Cutts mentioned that there were over 200 variables in the Google Algorithm that Google uses to determines the relevancy , Importance and page rank of any web page in the Google search results (SERPs).
After that declaration, plenty of people started looking for the variables. But Matt Cutt did not gave any hints about the factors , just mentioned the possible number of variables.
At WebmasterWorld forum on a thread peoples are trying to make a list of possible Search Engine Optimization (SEO) factors that are Google’s search algorithm variables.
More than 200 SEO parameters/SEO factors are listed by individuals but still not sure about the weights assigned to each and how Google scores them.
Anyway, getting a possible Search Engine Optimization (SEO) factors that are Google search algorithm factor is useful on some level. But understanding where to put emphasis and time in is what is most important for SEOs to understand.
If you wish to achieve a high ranking, the various confirmed and suspected Google Search Engine Optimization (SEO) factors are listed below.
( The SEO factors listed below are NOT listed by weight, and not by any presumed relevance )
Domain: 13 factors
1. Domain age;
2. Length of domain registration;
3. Domain registration information hidden/anonymous;
4. Site top level domain (geographical focus, e.g. com versus co.uk);
5. Site top level domain (e.g. .com versus .info);
6. Sub domain or root domain?
7. Domain past records (how often it changed IP);
8. Domain past owners (how often the owner was changed)
9. Keywords in the domain;
10. Domain IP;
11. Domain IP neighbors;
12. Domain external mentions (non-linked)
13. Geo-targeting settings in Google Webmaster Tools
Server-side: 2 factors
1. Server geographical location;
2. Server reliability / uptime
Architecture: 8 factors
1. URL structure;
2. HTML structure;
3. Semantic structure;
4. Use of external CSS / JS files;
5. Website structure accessibility (use of inaccessible navigation, JavaScript, etc);
6. Use of canonical URLs;
7. “Correct” HTML code (?);
8. Cookies usage;
Content: 14 factors
1. Content language
2. Content uniqueness;
3. Amount of content (text versus HTML);
4. Unlinked content density (links versus text);
5. Pure text content ratio (without links, images, code, etc)
6. Content topicality / timeliness (for seasonal searches for example);
7. Semantic information (phrase-based indexing and co-occurring phrase indicators)
8. Content flag for general category (transactional, informational, navigational)
9. Content / market niche
10. Flagged keywords usage (gambling, dating vocabulary)
11. Text in images (?)
12. Malicious content (possibly added by hackers);
13. Rampant mis-spelling of words, bad grammar, and 10,000 word screeds without punctuation;
14. Use of absolutely unique /new phrases.
Internal Cross Linking: 5 factors
1. # of internal links to page;
2. # of internal links to page with identical / targeted anchor text;
3. # of internal links to page from content (instead of navigation bar, breadcrumbs, etc);
4. # of links using “nofollow” attribute; (?)
5. Internal link density,
Website factors: 7 factors
1. Website Robots.txt file content
2. Overall site update frequency;
3. Overall site size (number of pages);
4. Age of the site since it was first discovered by Google
5. XML Sitemap;
6. On-page trust flags (Contact info ( for local search even more important), Privacy policy, TOS, and similar);
7. Website type (e.g. blog instead of informational sites in top 10)
Page-specific factors: 9 factors
1. Page meta Robots tags;
2. Page age;
3. Page freshness (Frequency of edits and
% of page effected (changed) by page edits);
4. Content duplication with other pages of the site (internal duplicate content);
5. Page content reading level; (?)
6. Page load time (many factors in here);
7. Page type (About-us page versus main content page);
8. Page internal popularity (how many internal links it has);
9. Page external popularity (how many external links it has relevant to other pages of this site);
Keywords usage and keyword prominence: 13 factors
1. Keywords in the title of a page;
2. Keywords in the beginning of page title;
3. Keywords in Alt tags;
4. Keywords in anchor text of internal links (internal anchor text);
5. Keywords in anchor text of outbound links (?);
6. Keywords in bold and italic text (?);
7. Keywords in the beginning of the body text;
8. Keywords in body text;
9. Keyword synonyms relating to theme of page/site;
10. Keywords in filenames;
11. Keywords in URL;
12. No “Randomness on purpose” (placing “keyword” in the domain, “keyword” in the filename, “keyword” starting the first word of the title, “keyword” in the first word of the first line of the description and keyword tag…)
13. The use (abuse) of keywords utilized in HTML comment tags
Outbound links: 8 factors
1. Number of outbound links (per domain);
2. Number of outbound links (per page);
3. Quality of pages the site links in;
4. Links to bad neighborhoods;
5. Relevancy of outbound links;
6. Links to 404 and other error pages.
7. Links to SEO agencies from clients site
8. Hot-linked images
Backlink profile: 21 factors
1. Relevancy of sites linking in;
2. Relevancy of pages linking in;
3. Quality of sites linking in;
4. Quality of web page linking in;
5. Backlinks within network of sites;
6. Co-citations (which sites have similar backlink sources);
7. Link profile diversity:
1. Anchor text diversity;
2. Different IP addresses of linking sites,
3. Geographical diversity,
4. Different TLDs,
5. Topical diversity,
6. Different types of linking sites (logs, directories, etc);
7. Diversity of link placements
8. Authority Link (CNN, BBC, etc) Per Inbound Link
9. Backlinks from bad neighborhoods (absence / presence of backlinks from flagged sites)
10. Reciprocal links ratio (relevant to the overall backlink profile);
11. Social media links ratio (links from social media sites versus overall backlink profile);
12. Backlinks trends and patterns (like sudden spikes or drops of backlink number)
13. Citations in Wikipedia and Dmoz;
14. Backlink profile historical records (ever caught for link buying/selling, etc);
15. Backlinks from social bookmarking sites.
Each Separate Backlink: 6 factors
1. Authority of TLD (.com versus .gov)
2. Authority of a domain linking in
3. Authority of a page linking in
4. Location of a link (footer, navigation, body text)
5. Anchor text of a link (and Alt tag of images linking)
6. Title attribute of a link (?)
Visitor Profile and Behavior: 6 factors
1. Number of visits;
2. Visitors’ demographics;
3. Bounce rate;
4. Visitors’ browsing habits (which other sites they tend to visit)
5. Visiting trends and patterns (like sudden spiked in incoming traffic)
6. How often the listing is clicked within the SERPs (relevant to other listings)
Penalties, Filters and Manipulation: 12 factors
1. Keyword over usage / Keyword stuffing;
2. Link buying flag
3. Link selling flag;
4. Spamming records (comment, forums, other link spam);
5. Cloaking;
6. Hidden Text;
7. Duplicate Content (external duplication)
8. History of past penalties for this domain
9. History of past penalties for this owner
10. History of past penalties for other properties of this owner (?)
11. Past hackers’ attacks records
12. 301 flags: double re-directs/re-direct loops, or re-directs ending in 404 error
More Factors (6):
1. Domain registration with Google Webmaster Tools;
2. Domain presence in Google News;
3. Domain presence in Google Blog Search;
4. Use of the domain in Google AdWords;
5. Use of the domain in Google Analytics;
6. Business name / brand name external mentions.
If a campaign can cover all of those with definitive solutions, then the competition doesn’t stand much of a chance (aside from domain authority and having a head start).
7 Responses to “200 SEO Factors : Google’s Search Algorithm Variables”
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Few words about M. R. SOHEL
I have been working on how to be a online entrepreneur & start successful online small business for the last 4 years.A SEO passion, practicing SEO for 2.5 years as well an online marketing geek.Open source enthusiastic & finally, a pro blogger shares his experience here.One of the founder of "Creative Brain Solution" , a freelancing team.
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This is the most complete list I have ever read on SEO. Thanks for this friend. Good work as well as hard work.
Arafat Hossain Piyada´s last blog ..Know Everything About Your Disk Drive Using DiskCountersView
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Useful post for newbie like me…lol….
[Reply]
Wow, that is some really good info. Keep up the good work.
Mushfiqur Rahman @ Gamersworldbd´s last blog ..New BioShock 2 Video, “Nobody Hurts My (Big) Daddy”
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This is a quality post I must say!! Thanks for sharing it buddy!
Swashata´s last blog ..MySQL date and time DataTypes Overview: DATE, TIME, DATETIME, TIMESTAMP, YEAR & Zero Values #Part2.1
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A real informative post. Bookmarked
Thanx buddy.
blues´s last blog ..Study in Japan: SISF Foundation Scholarship 2010
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the holy grail of SEO. Right here on your Blog
Will be excellent to get some kinda approximate weight for each variable.
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One of the best and most effective ways of getting links from another website is to create some unique, high-quality content. Not only will you attract links naturally from other sites, it also makes it a lot easier to ask for a link if you can provide some sort of benefit for the other site’s visitors.
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