Measures 146689 SEO Factors

144967 Built-In SEO Factors

135827 On-page SEO Factors

9140 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-0.23134533082 %79 %
2Number of Distinct Entities Used   Diversity-0.211062979 %95 %
3Entities in Title Tag   Relevancy-0.217369 %94 %
4Load Time Milliseconds   Performance-0.2132075148984 %91 %
5Search Result Domain is .com, .net, or .org   Other-0.21115 %74 %
6Number of Unique Variations Used   Diversity-0.2129778 %88 %
7Number of Top 200 Shared Factors Used   Diversity-0.21523898 %93 %
8Number of Top 100 Shared Factors Used   Diversity-0.21392998 %93 %
9Search Result Domain is .com   Other-0.2115 %74 %
10Number of Top 50 Shared Factors Used   Diversity-0.2171298 %92 %
11Entities in the HTML Tag   Relevancy-0.274615375 %95 %
12Entities in Sentences   Relevancy-0.266915071 %95 %
13Entities in H1 Tags-0.196257 %91 %
14Variations in H1-H6 Tags   Relevancy-0.1924764 %87 %
15Variations in H1, H2, and H3 Tags   Relevancy-0.1921663 %86 %
16Variations in Div Tags   Relevancy-0.1968710572 %91 %
17Variations in H1 and H2 Tags   Relevancy-0.1911460 %86 %
18Variations in Body Tags   Relevancy-0.19179921177 %89 %
19Number of Referring Domains   Authority-0.18170811951 %69 %
20Entities in H2 Tags-0.1831754 %92 %
21Variations in P Tags   Relevancy-0.181373065 %89 %
22Variations in HTML Tags   Relevancy-0.18179920876 %91 %
23Number of Factors Used   Diversity-0.1837517898 %89 %
24Number of Backlinks   Authority-0.18124727599751 %70 %
25Variations in Sentences   Relevancy-0.182153270 %88 %
26Variations in Search Result Document File Name   Relevancy-0.183143 %79 %
27Number of Do Follow Backlinks   Authority-0.18122239532446 %69 %
28Variations in LI Tags   Relevancy-0.181722064 %89 %
29Term Frequency   Relevancy-0.184376 %88 %
30Variations in Search Result Link Text   Relevancy-0.173279 %82 %
31Variations in Search Result Display URL   Relevancy-0.173279 %82 %
32Variations in A Tags   Relevancy-0.172552164 %86 %
33Variations in the Title Tag   Relevancy-0.173263 %85 %
34Variation Count in Top 30KB   Relevancy-0.17771864 %85 %
35Entities in H3 Tags-0.1743845 %92 %
36Unabridged Word Count   Size-0.1710284185784 %88 %
37LSI Words in Sentences   Relevancy-0.17370377165 %94 %
38Variations in Search Result URL Path   Relevancy-0.173144 %81 %
39Word Count   Size-0.176250146984 %88 %
40Leading Variations in H1-H6 Tags   Relevancy-0.1714244 %86 %
41Clean Keyword Density in the HTML Tag   Relevancy-0.1716367 %79 %
42Clean Text Kilobytes   Size-0.17661376 %88 %
43Number of HTML Tags   Size-0.173693108684 %87 %
44Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %86 %
45Number of Images   Size-0.173063276 %88 %
46Variations in H1 Tags   Relevancy-0.173153 %86 %
47Number of Includes   Technology-0.17552780 %79 %
48Entities in Meta Description Tag   Relevancy-0.178359 %90 %
49Variations in H2 Tags   Relevancy-0.1711346 %84 %
50Search Result Number of Dirs in Path   Other-0.174272 %76 %
51Number of Images with ALT Text   Size-0.162792272 %86 %
52Has Entities in H1 Tags   Relevancy-0.161157 %87 %
53Variations in First 100 Words   Relevancy-0.1617562 %85 %
54Number of No Follow Backlinks   Authority-0.162706172339 %67 %
55Number of Heading Tags   Size-0.16672376 %86 %
56Number of P Tags   Size-0.161353975 %88 %
57Variations in the Canonical URL   Relevancy-0.169247 %83 %
58Title Tag Has Entities   Relevancy-0.161169 %87 %
59Variations in Meta Description   Relevancy-0.164253 %83 %
60Variation Density in Top 30KB   Relevancy-0.167259 %81 %
61Variations in A Tag HREF Attributes   Relevancy-0.163233758 %90 %
62Variations in ALT Attributes   Relevancy-0.1655744 %83 %
63Variations in Distinct A Tag HREF Attributes   Relevancy-0.162442358 %90 %
64Exact Matches in the HTML Tag   Relevancy-0.168261129 %83 %
65LSI Words in Title Tag   Relevancy-0.1616666 %93 %
66Number of DoFollow Links   Authority-0.1640914580 %86 %
67Number of HTTPS Links   Authority-0.1641914880 %86 %
68Variations in Main Tags   Relevancy-0.164845636 %85 %
69Number of Links   Authority-0.1642215080 %86 %
70Leading Variations in Title Tag   Relevancy-0.161130 %80 %
71TF/IDF   Relevancy-0.161156 %85 %
72Variations in Span Tags   Relevancy-0.1641950 %88 %
73Number of Facebook Pages   Authority-0.1616259 %80 %
74Percentage of DoFollow Links   Authority-0.16988280 %87 %
75Variations in OpenGraph Description   Relevancy-0.164249 %79 %
76Number of Internal Links   Authority-0.1638913580 %86 %
77Number of Forms   Technology-0.1519254 %81 %
78LSI Words in H1 Tags   Relevancy-0.1517456 %93 %
79Number of CSS Includes   Technology-0.15261073 %78 %
80Variations in Search Result URL   Relevancy-0.154254 %76 %
81Variations in OpenGraph Title   Relevancy-0.153153 %78 %
82Number of External Links   Authority-0.151061577 %85 %
83Variations in Absolute URLs   Relevancy-0.153104959 %87 %
84Percentage of DoFollow Internal Links   Authority-0.15907279 %85 %
85Number of H1 Tags   Size-0.1511270 %86 %
86Number of DoFollow External Links   Authority-0.15661475 %84 %
87Variations in Script Tags   Relevancy-0.158536561 %83 %
88Number of HTML Comments   Size-0.157075472 %84 %
89Number of Images without ALT Text   Size-0.15601158 %85 %
90Has Entities in H2 Tags   Relevancy-0.151154 %85 %
91Has Form   Technology-0.151153 %77 %
92Number of H2 Tags   Size-0.1521768 %86 %
93Leading Variations in H1 Tags   Relevancy-0.151126 %81 %
94Number of Sentences   Size-0.1569712982 %83 %
95Has JSON-LD Schema Markup   Relevancy-0.151154 %77 %
96Average Words Per Sentence   Size-0.152293278 %81 %
97Flesch Kincaid Reading Grade Level   Other-0.156195 %86 %
98Has Meta Charset   Technology-0.151174 %83 %
99Number of JavaScript Includes   Technology-0.14441881 %80 %
100Number of H3 Tags   Size-0.1433961 %84 %
101Variations in Nav Tags   Relevancy-0.142372346 %83 %
102Exact Matches in H1-H6 Tags   Relevancy-0.1413118 %82 %
103LSI Words in H2 Tags   Relevancy-0.14872055 %92 %
104LSI Words in Meta Description Tag   Relevancy-0.14361055 %91 %
105Search Result Domain Length   Size-0.14271783 %80 %
106Search Result Host Length   Size-0.14271783 %79 %
107Variations in H3 Tags   Relevancy-0.1416335 %83 %
108Entities in H4 Tags-0.1419222 %88 %
109Variations in Section Tags   Relevancy-0.14911636 %83 %
110Inline CSS Kilobytes   Size-0.141916165 %82 %
111Has Meta Viewport   Technology-0.141181 %82 %
112Number Of JSON-LD Types   Relevancy-0.141501457 %82 %
113Variations making whole H1-H6 Tags   Relevancy-0.142116 %78 %
114Number of Questions   Size-0.14811167 %77 %
115Percentage of DoFollow External Links   Authority-0.14301174 %79 %
116Variations in Footer Tags   Relevancy-0.14135635 %82 %
117Page Size Kilobytes   Size-0.14110531983 %76 %
118Search Result Uses HTTPS   Other-0.141183 %84 %
119Number of Absolute URLs   Authority-0.1499028883 %79 %
120Has Entities in H3 Tags   Relevancy-0.141146 %83 %
121Variations making whole H1, H2, and H3 Tags   Relevancy-0.142114 %79 %
122Has Canonical URL   Authority-0.141171 %79 %
123Number of Questions In Headings   Size-0.148237 %83 %
124Number of Prices   Size-0.1429627469 %81 %
125Leading Variations in H2 Tags   Relevancy-0.136121 %82 %
126Number of Instagram Pages   Authority-0.1312245 %78 %
127Number of Social Pages   Authority-0.1330465 %81 %
128Number of LinkedIn Pages   Authority-0.137134 %76 %
129Number of Email Addresses   Trust-0.13280543 %79 %
130Word Count in Meta Description   Size-0.13381967 %78 %
131Is Home Page   Other-0.131120 %44 %
132Has FavIcon   Technology-0.131175 %76 %
133Meta Description Length   Size-0.1321711867 %78 %
134Has Email   Trust-0.131143 %71 %
135Search Result URL Length   Size-0.13936398 %62 %
136LSI Words in H3 Tags   Relevancy-0.131272248 %90 %
137Has Privacy Policy   Trust-0.131160 %74 %
138Number of US Phone Numbers   Trust-0.136671242 %80 %
139Has OpenGraph Type   Relevancy-0.131161 %70 %
140Number of Nofollow Links   Authority-0.1346525 %76 %
141Variations in Meta Twitter Content   Relevancy-0.132125 %69 %
142Number of Facebook Accounts   Authority-0.133129 %78 %
143Has Meta Description   Relevancy-0.131166 %73 %
144Variations in the last 100 words   Relevancy-0.1315344 %80 %
145Meta Description Tag Has Entities   Relevancy-0.131159 %81 %
146Uses JSON-LD name   Other-0.131153 %77 %
147Variations Making Whole LI Tags   Relevancy-0.135124 %77 %
148Exact Matches in Top 30KB   Relevancy-0.1324216 %78 %
149Variations in Meta Twitter Description   Relevancy-0.134123 %73 %
150Is Store Page   Other-0.131146 %68 %
151Exact Matches in Sentences   Relevancy-0.1342219 %83 %
152Has Meta Twitter Card   Authority-0.131152 %65 %
153Headings Has Question   Other-0.131136 %77 %
154Has OpenGraph Image   Relevancy-0.131154 %68 %
155Variations making whole A Tags   Relevancy-0.138129 %76 %
156Number of Social Accounts   Authority-0.1310243 %78 %
157Inline JavaScript Kilobytes   Size-0.1360911880 %72 %
158Number of H4 Tags   Size-0.1320437 %81 %
159Variations in I Tags   Relevancy-0.1317322 %79 %
160Title Length   Size-0.131225081 %78 %
161Is Purchase Page   Other-0.131147 %66 %
162Has US Phone Number   Trust-0.131142 %71 %
163Variations in TITLE Attributes   Relevancy-0.1287535 %80 %
164Title Word Count   Size-0.1218881 %76 %
165Has Contact Page   Trust-0.121163 %70 %
166Number of Questions In H3 Tags   Size-0.125117 %76 %
167Has Terms of Service   Trust-0.121141 %67 %
168Uses JSON-LD CollectionPage   Other-0.12115 %33 %
169Has Schema Markup   Relevancy-0.121164 %74 %
170Variations in Strong Tags   Relevancy-0.1215225 %79 %
171Uses Schema collectionpage   Other-0.12115 %32 %
172Uses Schema name   Other-0.121160 %71 %
173Uses JSON-LD url   Other-0.121147 %76 %
174Variations making whole H1 Tags   Relevancy-0.12118 %78 %
175Exact Matches in Title Tag   Relevancy-0.122115 %79 %
176Is Pagination Page   Other-0.121119 %65 %
177Variations Making Whole Span Tags   Relevancy-0.127119 %80 %
178Variations in H4-H6 Tags   Relevancy-0.1216117 %79 %
179Has Google Verify   Technology-0.121122 %66 %
180Has Meta Twitter Description   Authority-0.121130 %59 %
181Percentage of NoFollow Links   Authority-0.1215222 %74 %
182Uses Schema url   Other-0.121156 %68 %
183Number of Twitter Accounts   Authority-0.122125 %70 %
184Has Entities in H4 Tags   Relevancy-0.121123 %77 %
185Number of Questions In H2 Tags   Size-0.124123 %74 %
186Leading Variations in H3 Tags   Relevancy-0.125115 %77 %
187Uses JSON-LD ItemList   Other-0.12114 %44 %
188Uses Schema itemlist   Other-0.12114 %45 %
189Variations in ID Attributes   Relevancy-0.1216212 %80 %
190Uses Schema organization   Other-0.121135 %67 %
191Has Meta Twitter Title   Authority-0.121131 %59 %
192Number of NoFollow External Links   Authority-0.1240317 %75 %
193Uses JSON-LD ListItem   Other-0.121134 %71 %
194Variations in Button Tags   Relevancy-0.1212529 %80 %
195Is Article Page   Other-0.121142 %66 %
196Is Category Page   Other-0.121115 %66 %
197Uses Schema sku   Other-0.11115 %27 %
198Has Apple Touch Icon   Technology-0.111152 %73 %
199Variations in H4 Tags   Relevancy-0.115113 %77 %
200Is OpenGraph Type Article   Technology-0.111132 %58 %