Measures 146686 SEO Factors

144964 Built-In SEO Factors

135827 On-page SEO Factors

9137 Google Maps SEO Factors for Local SEO

1722 SEO Factors from APIs

147 API SEO Factors for off-page SEO like backlinks and referring domains.

[ Ahrefs, SEMRush, DomDetailer, SpyFu APIs ]

1575 Technology Stack SEO Factors

[ Wappalyzer API ]

The Cora Shared Data contains over 300 million SEO factor measurements and grows hourly.

Google Maps and Bing Factors are not yet available for viewing but will be coming soon!
Aggregate SEO Weather Top SEO Factors - Aggregate SEO Weather

TOP SEO Factors for 2025-11     previous

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Unique LSI Words Used   Diversity-0.23134532982 %79 %
2Number of Distinct Entities Used   Diversity-0.221062979 %95 %
3Entities in Title Tag   Relevancy-0.217369 %94 %
4Load Time Milliseconds   Performance-0.2132075148184 %91 %
5Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
7Number of Unique Variations Used   Diversity-0.2129778 %88 %
8Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
9Number of Top 50 Shared Factors Used   Diversity-0.2171298 %92 %
10Search Result Domain is .com   Other-0.2114 %74 %
11Entities in the HTML Tag   Relevancy-0.274615375 %95 %
12Entities in Sentences   Relevancy-0.266915071 %95 %
13Variations in H1-H6 Tags   Relevancy-0.1924764 %87 %
14Entities in H1 Tags-0.196257 %91 %
15Variations in H1, H2, and H3 Tags   Relevancy-0.1921663 %86 %
16Variations in Div Tags   Relevancy-0.1968710673 %91 %
17Variations in H1 and H2 Tags   Relevancy-0.1911461 %86 %
18Variations in Body Tags   Relevancy-0.19179921577 %89 %
19Entities in H2 Tags-0.1931754 %92 %
20Variations in P Tags   Relevancy-0.191373065 %89 %
21Variations in HTML Tags   Relevancy-0.18179921276 %91 %
22Number of Referring Domains   Authority-0.18170811851 %68 %
23Number of Factors Used   Diversity-0.1837517998 %89 %
24Number of Backlinks   Authority-0.18124727592151 %69 %
25Variations in Sentences   Relevancy-0.182153370 %88 %
26Variations in LI Tags   Relevancy-0.181722064 %89 %
27Variations in Search Result Document File Name   Relevancy-0.183143 %80 %
28Term Frequency   Relevancy-0.184376 %88 %
29Number of Do Follow Backlinks   Authority-0.17122239523846 %68 %
30Variations in A Tags   Relevancy-0.172552264 %86 %
31Variations in Search Result Link Text   Relevancy-0.173279 %81 %
32Variations in Search Result Display URL   Relevancy-0.173279 %82 %
33Variations in the Title Tag   Relevancy-0.173263 %85 %
34Variation Count in Top 30KB   Relevancy-0.17771864 %85 %
35Variations in Search Result URL Path   Relevancy-0.173145 %81 %
36Unabridged Word Count   Size-0.178156185384 %88 %
37Entities in H3 Tags-0.1743845 %92 %
38Clean Keyword Density in the HTML Tag   Relevancy-0.1716368 %80 %
39Word Count   Size-0.176250146984 %88 %
40Clean Text Kilobytes   Size-0.17661376 %88 %
41LSI Words in Sentences   Relevancy-0.17370377065 %94 %
42Number of Images   Size-0.173063376 %88 %
43Number of HTML Tags   Size-0.173693109184 %88 %
44Leading Variations in H1-H6 Tags   Relevancy-0.1714244 %87 %
45Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711242 %87 %
46Number of Includes   Technology-0.17552780 %80 %
47Number of Images with ALT Text   Size-0.172792372 %86 %
48Variations in H1 Tags   Relevancy-0.173153 %86 %
49Variations in H2 Tags   Relevancy-0.1711346 %83 %
50Entities in Meta Description Tag   Relevancy-0.178359 %90 %
51Variations in First 100 Words   Relevancy-0.1717563 %85 %
52Search Result Number of Dirs in Path   Other-0.174272 %77 %
53Has Entities in H1 Tags   Relevancy-0.171157 %87 %
54Number of Heading Tags   Size-0.16672376 %85 %
55Variations in the Canonical URL   Relevancy-0.167247 %83 %
56Number of P Tags   Size-0.161353975 %88 %
57Number of No Follow Backlinks   Authority-0.162706170439 %66 %
58Variations in Meta Description   Relevancy-0.164253 %83 %
59Variations in A Tag HREF Attributes   Relevancy-0.163233858 %90 %
60Variations in Distinct A Tag HREF Attributes   Relevancy-0.162442358 %90 %
61Title Tag Has Entities   Relevancy-0.161169 %87 %
62Variation Density in Top 30KB   Relevancy-0.167259 %81 %
63Variations in ALT Attributes   Relevancy-0.1655744 %84 %
64Number of DoFollow Links   Authority-0.1640914580 %86 %
65Number of HTTPS Links   Authority-0.1641914880 %86 %
66TF/IDF   Relevancy-0.161156 %85 %
67Number of Links   Authority-0.1642215080 %86 %
68Variations in Main Tags   Relevancy-0.164845636 %85 %
69Variations in Span Tags   Relevancy-0.1641950 %88 %
70Variations in OpenGraph Description   Relevancy-0.164249 %79 %
71LSI Words in Title Tag   Relevancy-0.1616666 %94 %
72Number of Internal Links   Authority-0.1638913580 %86 %
73Number of Facebook Pages   Authority-0.1616259 %80 %
74Percentage of DoFollow Links   Authority-0.16988280 %88 %
75Exact Matches in the HTML Tag   Relevancy-0.168261128 %82 %
76Leading Variations in Title Tag   Relevancy-0.161130 %80 %
77Variations in Absolute URLs   Relevancy-0.163105059 %88 %
78Number of Forms   Technology-0.1619254 %82 %
79Variations in OpenGraph Title   Relevancy-0.163153 %78 %
80Number of CSS Includes   Technology-0.16261073 %78 %
81Number of External Links   Authority-0.15671577 %85 %
82Percentage of DoFollow Internal Links   Authority-0.15907279 %86 %
83Variations in Search Result URL   Relevancy-0.154254 %76 %
84LSI Words in H1 Tags   Relevancy-0.1517456 %93 %
85Number of H1 Tags   Size-0.1511270 %87 %
86Number of DoFollow External Links   Authority-0.15641376 %84 %
87Variations in Script Tags   Relevancy-0.158536762 %83 %
88Number of Images without ALT Text   Size-0.15601158 %86 %
89Number of HTML Comments   Size-0.157075572 %84 %
90Has Entities in H2 Tags   Relevancy-0.151154 %85 %
91Has Form   Technology-0.151153 %77 %
92Number of H2 Tags   Size-0.1521768 %86 %
93Number of Sentences   Size-0.1569713082 %83 %
94Average Words Per Sentence   Size-0.152293278 %81 %
95Leading Variations in H1 Tags   Relevancy-0.151126 %81 %
96Has JSON-LD Schema Markup   Relevancy-0.151154 %78 %
97Flesch Kincaid Reading Grade Level   Other-0.156295 %86 %
98Has Meta Charset   Technology-0.151174 %83 %
99Number of JavaScript Includes   Technology-0.15441881 %81 %
100Variations in Nav Tags   Relevancy-0.152372346 %83 %
101Number of H3 Tags   Size-0.1533961 %84 %
102LSI Words in H2 Tags   Relevancy-0.14872055 %91 %
103LSI Words in Meta Description Tag   Relevancy-0.14361055 %91 %
104Exact Matches in H1-H6 Tags   Relevancy-0.1411118 %82 %
105Search Result Domain Length   Size-0.14271783 %80 %
106Search Result Host Length   Size-0.14271783 %79 %
107Variations in H3 Tags   Relevancy-0.1416335 %83 %
108Variations in Section Tags   Relevancy-0.14911636 %83 %
109Entities in H4 Tags-0.1419222 %88 %
110Inline CSS Kilobytes   Size-0.141916165 %82 %
111Variations in Footer Tags   Relevancy-0.14135735 %82 %
112Has Meta Viewport   Technology-0.141181 %82 %
113Number of Absolute URLs   Authority-0.1499028983 %79 %
114Page Size Kilobytes   Size-0.14110532283 %76 %
115Number of Questions   Size-0.14811167 %77 %
116Number Of JSON-LD Types   Relevancy-0.141501457 %82 %
117Has Canonical URL   Authority-0.141171 %79 %
118Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
119Has Entities in H3 Tags   Relevancy-0.141147 %84 %
120Percentage of DoFollow External Links   Authority-0.14301174 %79 %
121Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %78 %
122Search Result Uses HTTPS   Other-0.141183 %84 %
123Number of Questions In Headings   Size-0.148236 %83 %
124Number of Prices   Size-0.1429627470 %80 %
125Leading Variations in H2 Tags   Relevancy-0.146121 %81 %
126Number of Instagram Pages   Authority-0.1412245 %78 %
127Number of Social Pages   Authority-0.1330465 %80 %
128Number of Email Addresses   Trust-0.13280544 %80 %
129Number of LinkedIn Pages   Authority-0.137133 %76 %
130Has FavIcon   Technology-0.131175 %76 %
131Word Count in Meta Description   Size-0.13381967 %77 %
132LSI Words in H3 Tags   Relevancy-0.131272248 %90 %
133Has Email   Trust-0.131144 %72 %
134Meta Description Length   Size-0.1321711867 %78 %
135Has Privacy Policy   Trust-0.131160 %74 %
136Search Result URL Length   Size-0.13936298 %62 %
137Is Home Page   Other-0.131120 %45 %
138Has OpenGraph Type   Relevancy-0.131162 %70 %
139Variations in the last 100 words   Relevancy-0.1315345 %80 %
140Number of Nofollow Links   Authority-0.1344525 %76 %
141Meta Description Tag Has Entities   Relevancy-0.131159 %81 %
142Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
143Number of US Phone Numbers   Trust-0.136671242 %80 %
144Has Meta Description   Relevancy-0.131166 %73 %
145Number of Facebook Accounts   Authority-0.133129 %78 %
146Uses JSON-LD name   Other-0.131153 %77 %
147Variations in Meta Twitter Description   Relevancy-0.134124 %72 %
148Is Store Page   Other-0.131146 %68 %
149Variations Making Whole LI Tags   Relevancy-0.135124 %77 %
150Headings Has Question   Other-0.131136 %77 %
151Has Meta Twitter Card   Authority-0.131152 %65 %
152Variations making whole A Tags   Relevancy-0.138129 %77 %
153Is Purchase Page   Other-0.131147 %66 %
154Inline JavaScript Kilobytes   Size-0.1360911980 %72 %
155Has OpenGraph Image   Relevancy-0.131154 %68 %
156Number of H4 Tags   Size-0.1320437 %81 %
157Exact Matches in Top 30KB   Relevancy-0.1324216 %77 %
158Number of Social Accounts   Authority-0.1310243 %78 %
159Variations in I Tags   Relevancy-0.1317323 %79 %
160Title Length   Size-0.131225081 %77 %
161Exact Matches in Sentences   Relevancy-0.1342219 %83 %
162Has US Phone Number   Trust-0.131141 %72 %
163Has Contact Page   Trust-0.131163 %71 %
164Number of Questions In H3 Tags   Size-0.135117 %76 %
165Title Word Count   Size-0.1318881 %76 %
166Has Terms of Service   Trust-0.121141 %67 %
167Variations in TITLE Attributes   Relevancy-0.1287535 %80 %
168Variations in Strong Tags   Relevancy-0.1215225 %79 %
169Has Schema Markup   Relevancy-0.121164 %75 %
170Uses JSON-LD CollectionPage   Other-0.12115 %33 %
171Uses Schema name   Other-0.121160 %71 %
172Uses JSON-LD url   Other-0.121147 %76 %
173Uses Schema collectionpage   Other-0.12115 %32 %
174Variations Making Whole Span Tags   Relevancy-0.127119 %80 %
175Variations making whole H1 Tags   Relevancy-0.12118 %77 %
176Is Pagination Page   Other-0.121119 %64 %
177Variations in H4-H6 Tags   Relevancy-0.1216118 %80 %
178Exact Matches in Title Tag   Relevancy-0.122115 %79 %
179Has Meta Twitter Description   Authority-0.121130 %59 %
180Percentage of NoFollow Links   Authority-0.1215222 %74 %
181Uses Schema url   Other-0.121155 %68 %
182Has Google Verify   Technology-0.121123 %66 %
183Number of Twitter Accounts   Authority-0.122125 %70 %
184Uses Schema itemlist   Other-0.12114 %45 %
185Variations in ID Attributes   Relevancy-0.1216212 %80 %
186Uses JSON-LD ItemList   Other-0.12114 %44 %
187Leading Variations in H3 Tags   Relevancy-0.125116 %77 %
188Variations in Button Tags   Relevancy-0.12125210 %80 %
189Has Meta Twitter Title   Authority-0.121132 %59 %
190Uses Schema organization   Other-0.121135 %67 %
191Number of Questions In H2 Tags   Size-0.124123 %74 %
192Has Entities in H4 Tags   Relevancy-0.121123 %77 %
193Is Category Page   Other-0.121115 %66 %
194Number of NoFollow External Links   Authority-0.1221217 %75 %
195Is Article Page   Other-0.121142 %67 %
196Uses JSON-LD ListItem   Other-0.121134 %71 %
197Has Apple Touch Icon   Technology-0.121152 %73 %
198Variations in H4 Tags   Relevancy-0.115113 %77 %
199Uses JSON-LD description   Other-0.111141 %70 %
200Uses Schema sku   Other-0.11115 %27 %