Measures 146949 SEO Factors

145227 Built-In SEO Factors

136072 On-page SEO Factors

9155 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 2025-12     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-0.2395732985 %87 %
2Entities in Title Tag   Relevancy-0.237377 %96 %
3Number of Distinct Entities Used   Diversity-0.23633385 %97 %
4Number of Top 200 Shared Factors Used   Diversity-0.22524096 %94 %
5Number of Top 100 Shared Factors Used   Diversity-0.21393096 %91 %
6Entities in H1 Tags-0.217264 %93 %
7Number of Unique Variations Used   Diversity-0.2118677 %85 %
8Number of Top 50 Shared Factors Used   Diversity-0.21161396 %92 %
9Search Result Domain is .com, .net, or .org   Other-0.21114 %52 %
10Entities in the HTML Tag   Relevancy-0.2146615682 %93 %
11Entities in Sentences   Relevancy-0.2146115279 %93 %
12Number of Referring Domains   Authority-0.2242514145 %71 %
13Number of Backlinks   Authority-0.27703121026345 %71 %
14Number of Do Follow Backlinks   Authority-0.19715834928242 %72 %
15Variations in Div Tags   Relevancy-0.191530913472 %86 %
16Entities in H2 Tags-0.1930758 %94 %
17Variations in Search Result Document File Name   Relevancy-0.195146 %69 %
18Variations in H1 and H2 Tags   Relevancy-0.1929360 %87 %
19Variations in H1-H6 Tags   Relevancy-0.1947663 %86 %
20Variations in Body Tags   Relevancy-0.197905837177 %86 %
21LSI Words in Sentences   Relevancy-0.19232880274 %92 %
22Number of Factors Used   Diversity-0.1928017996 %87 %
23Search Result Domain is .com   Other-0.19114 %51 %
24Variations in H1, H2, and H3 Tags   Relevancy-0.1941562 %86 %
25Variations in HTML Tags   Relevancy-0.197905836876 %87 %
26Exact Matches in the HTML Tag   Relevancy-0.193491736 %83 %
27Load Time Milliseconds   Performance-0.196377115286 %86 %
28Number of No Follow Backlinks   Authority-0.1854478102335 %69 %
29Variations in P Tags   Relevancy-0.189872866 %86 %
30LSI Words in Title Tag   Relevancy-0.1813676 %93 %
31Term Frequency   Relevancy-0.185376 %87 %
32Variations in LI Tags   Relevancy-0.18731964 %86 %
33Entities in Meta Description Tag   Relevancy-0.188464 %90 %
34LSI Words in H1 Tags   Relevancy-0.1814566 %91 %
35Has Entities in H1 Tags   Relevancy-0.181165 %89 %
36Number of Images   Size-0.171282979 %87 %
37Variations in H1 Tags   Relevancy-0.177153 %87 %
38Variations in Search Result Display URL   Relevancy-0.1711272 %76 %
39Variations in Search Result Link Text   Relevancy-0.1711272 %76 %
40Entities in H3 Tags-0.1722748 %92 %
41Variations in Sentences   Relevancy-0.1734103770 %86 %
42Variations in the Title Tag   Relevancy-0.179262 %84 %
43Variation Count in Top 30KB   Relevancy-0.1739862865 %82 %
44Variations in A Tags   Relevancy-0.1718802464 %82 %
45Number of HTML Tags   Size-0.173192117985 %86 %
46Exact Matches in H1-H6 Tags   Relevancy-0.179125 %82 %
47Number of P Tags   Size-0.171223678 %87 %
48Number of Images with ALT Text   Size-0.171052075 %88 %
49Title Tag Has Entities   Relevancy-0.171177 %88 %
50Variations in Meta Description   Relevancy-0.1743251 %83 %
51Leading Variations in H1, H2, and H3 Tags   Relevancy-0.167242 %87 %
52Number of Forms   Technology-0.1614358 %76 %
53Percentage of DoFollow Links   Authority-0.161008682 %89 %
54Word Count   Size-0.163325136185 %85 %
55Variations in H2 Tags   Relevancy-0.1622343 %83 %
56Number of Heading Tags   Size-0.16532179 %86 %
57Leading Variations in H1-H6 Tags   Relevancy-0.1610245 %87 %
58LSI Words in Meta Description Tag   Relevancy-0.16421263 %90 %
59Unabridged Word Count   Size-0.164792173285 %86 %
60Variations in Search Result URL Path   Relevancy-0.166143 %84 %
61Clean Keyword Density in the HTML Tag   Relevancy-0.16147468 %75 %
62Percentage of DoFollow Internal Links   Authority-0.16937681 %87 %
63Number of Internal Links   Authority-0.1635415482 %86 %
64Clean Text Kilobytes   Size-0.16261278 %85 %
65Exact Matches in Sentences   Relevancy-0.1642327 %81 %
66Exact Matches in Title Tag   Relevancy-0.162124 %79 %
67Exact Matches in Top 30KB   Relevancy-0.1629223 %75 %
68Number of H1 Tags   Size-0.163273 %87 %
69Number of HTTPS Links   Authority-0.1635816782 %86 %
70Variations in Span Tags   Relevancy-0.16496949 %85 %
71Number of DoFollow Links   Authority-0.1635016482 %86 %
72Number of Links   Authority-0.1636216882 %86 %
73Variations in Nav Tags   Relevancy-0.1612533046 %82 %
74LSI Words in H2 Tags   Relevancy-0.16792061 %91 %
75Number of HTML Comments   Size-0.169814475 %89 %
76Variations in Main Tags   Relevancy-0.1689946436 %86 %
77Search Result Number of Dirs in Path   Other-0.153274 %68 %
78Uses JSON-LD MedicalWebPage   Other-0.15117 %11 %
79Variations in the Canonical URL   Relevancy-0.1521146 %82 %
80Has Entities in H2 Tags   Relevancy-0.151158 %87 %
81Variations in Search Result URL   Relevancy-0.154148 %78 %
82Number of DoFollow External Links   Authority-0.15381378 %86 %
83Variations in OpenGraph Title   Relevancy-0.156149 %76 %
84Variation Density in Top 30KB   Relevancy-0.15247358 %75 %
85Leading Variations in Title Tag   Relevancy-0.151131 %79 %
86Number of H2 Tags   Size-0.1518769 %87 %
87Variations in ALT Attributes   Relevancy-0.15342642 %81 %
88Meta Description Tag Has Entities   Relevancy-0.151164 %80 %
89Variations in A Tag HREF Attributes   Relevancy-0.1510094455 %87 %
90Leading Variations in H1 Tags   Relevancy-0.151129 %82 %
91Uses JSON-LD itemReviewed-0.15113 %17 %
92Variations in Script Tags   Relevancy-0.154632316059 %83 %
93Number of External Links   Authority-0.15461478 %86 %
94TF/IDF   Relevancy-0.151154 %83 %
95Variations in Distinct A Tag HREF Attributes   Relevancy-0.158052856 %87 %
96Has Privacy Policy   Trust-0.151161 %69 %
97Uses Microdata WPAdBlock   Other-0.15111 %16 %
98Uses Schema wpadblock   Other-0.15111 %16 %
99Has Form   Technology-0.141156 %73 %
100Variations in OpenGraph Description   Relevancy-0.1438244 %77 %
101Has Meta Charset   Technology-0.141177 %84 %
102Has Entities in H3 Tags   Relevancy-0.141149 %80 %
103Flesch Kincaid Reading Grade Level   Other-0.147292 %88 %
104Variations in First 100 Words   Relevancy-0.14102559 %82 %
105Exact Matches in H1 Tags   Relevancy-0.142118 %82 %
106Has Canonical URL   Authority-0.141173 %76 %
107Variations in Footer Tags   Relevancy-0.14847833 %81 %
108Average Words Per Sentence   Size-0.141663281 %82 %
109Variations in Absolute URLs   Relevancy-0.1470496456 %84 %
110LSI Words in H3 Tags   Relevancy-0.14671953 %88 %
111Is Home Page   Other-0.141120 %45 %
112Has Meta Viewport   Technology-0.141184 %84 %
113Search Result Uses HTTPS   Other-0.141185 %84 %
114Number of H3 Tags   Size-0.1423860 %83 %
115Variations making whole H1-H6 Tags   Relevancy-0.142119 %78 %
116Variations in H3 Tags   Relevancy-0.1413231 %78 %
117Has Meta Description   Relevancy-0.141168 %81 %
118Number of Sentences   Size-0.1443911783 %80 %
119Has FavIcon   Technology-0.141177 %80 %
120Entities in H4 Tags-0.1410324 %83 %
121Variations making whole H1, H2, and H3 Tags   Relevancy-0.141118 %79 %
122Variations in Section Tags   Relevancy-0.1415601833 %79 %
123Search Result Domain Length   Size-0.14261886 %78 %
124Search Result Host Length   Size-0.14261886 %78 %
125Number of Images without ALT Text   Size-0.13591059 %81 %
126Variations making whole A Tags   Relevancy-0.1317228 %74 %
127Number of Facebook Pages   Authority-0.136263 %75 %
128Variations Making Whole Span Tags   Relevancy-0.134121 %81 %
129Variations making whole H1 Tags   Relevancy-0.131112 %77 %
130Variations in TITLE Attributes   Relevancy-0.1357638 %79 %
131Number Of JSON-LD Types   Relevancy-0.13381255 %72 %
132Number of Absolute URLs   Authority-0.1366428184 %78 %
133Leading Variations in H2 Tags   Relevancy-0.133121 %81 %
134Title Word Count   Size-0.1312883 %76 %
135Word Count in Meta Description   Size-0.13482068 %79 %
136Number of Includes   Technology-0.13462784 %71 %
137Uses Schema itemreviewed   Other-0.13113 %24 %
138Number of Prices   Size-0.132776069 %82 %
139Exact Matches in H2 Tags   Relevancy-0.134113 %79 %
140Variations in Strong Tags   Relevancy-0.139224 %76 %
141Variations Making Whole LI Tags   Relevancy-0.134125 %77 %
142Title Length   Size-0.13854984 %78 %
143Exact Matches in Meta Description   Relevancy-0.132115 %80 %
144Has Contact Page   Trust-0.131166 %72 %
145Percentage of DoFollow External Links   Authority-0.13211177 %81 %
146Number of Questions In Headings   Size-0.136234 %75 %
147Has JSON-LD Schema Markup   Relevancy-0.131153 %69 %
148Meta Description Length   Size-0.1330912368 %79 %
149Number of LinkedIn Pages   Authority-0.133127 %68 %
150Page Size Kilobytes   Size-0.1379130784 %74 %
151Number of Social Accounts   Authority-0.135242 %80 %
152Number of H4 Tags   Size-0.1316439 %78 %
153Uses Schema name   Other-0.131161 %68 %
154Uses Schema image   Other-0.131122 %65 %
155Number of JavaScript Includes   Technology-0.13331783 %73 %
156Has Schema Markup   Relevancy-0.121165 %71 %
157Has Meta Robots   Other-0.121128 %67 %
158Is Store Page   Other-0.121150 %68 %
159Number of Social Pages   Authority-0.1215467 %79 %
160Uses JSON-LD name   Other-0.121153 %68 %
161Uses JSON-LD BreadcrumbList   Other-0.121136 %63 %
162LSI Words in H4 Tags   Relevancy-0.1232733 %82 %
163Uses Schema ratingvalue   Other-0.121110 %61 %
164Number of CSS Includes   Technology-0.12191077 %74 %
165Number of Questions   Size-0.12251069 %75 %
166Has Meta Twitter Card   Authority-0.121152 %56 %
167Has OpenGraph Type   Relevancy-0.121161 %70 %
168Uses JSON-LD ListItem   Other-0.121137 %67 %
169Uses Schema aggregaterating   Other-0.121110 %64 %
170Is Purchase Page   Other-0.121144 %66 %
171Number of Facebook Accounts   Authority-0.123129 %77 %
172Uses JSON-LD description   Other-0.121142 %58 %
173Is OpenGraph Type Article   Technology-0.121132 %44 %
174Search Result URL Length   Size-0.12836197 %51 %
175Number of Email Addresses   Trust-0.1216445 %82 %
176Number of Instagram Pages   Authority-0.1213249 %78 %
177Uses Microdata name   Other-0.121116 %52 %
178Number of Nofollow Links   Authority-0.1218526 %76 %
179Uses JSON-LD sku   Other-0.12116 %38 %
180Uses Microdata position   Other-0.12119 %43 %
181Uses Microdata item   Other-0.12119 %44 %
182Uses Schema website   Other-0.121138 %53 %
183Uses Schema itemlistelement   Other-0.12119 %45 %
184Search Result Not .com .net or .org   Other-0.121195 %14 %
185Uses Microdata itemListElement   Other-0.12119 %44 %
186Has Terms of Service   Trust-0.121130 %57 %
187Uses Schema sku   Other-0.12117 %39 %
188Uses Microdata ListItem   Other-0.12119 %44 %
189Uses Schema organization   Other-0.121136 %69 %
190Inline CSS Kilobytes   Size-0.121945764 %67 %
191Headings Has Question   Other-0.121134 %70 %
192Uses Schema listitem   Other-0.121143 %64 %
193Is Pagination Page   Other-0.121119 %58 %
194Number of Questions In H2 Tags   Size-0.124120 %77 %
195Uses JSON-LD WebPageElement   Other-0.11112 %14 %
196Inline JavaScript Kilobytes   Size-0.1138810182 %74 %
197Search Result Summary Length   Size-0.1116115197 %59 %
198Percentage of NoFollow Links   Authority-0.115223 %69 %
199Uses Schema bestrating   Other-0.11117 %54 %
200Uses JSON-LD itemPage   Other-0.11112 %18 %