Measures 146215 SEO Factors

144493 Built-In SEO Factors

135376 On-page SEO Factors

9117 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-0.2596529879 %81 %
2Number of Top 200 Shared Factors Used   Diversity-0.24523798 %93 %
3Number of Top 100 Shared Factors Used   Diversity-0.24392898 %94 %
4Number of Unique Variations Used   Diversity-0.2329677 %92 %
5Entities in Title Tag   Relevancy-0.237363 %93 %
6Number of Distinct Entities Used   Diversity-0.23652775 %94 %
7Number of Top 50 Shared Factors Used   Diversity-0.23161298 %94 %
8Entities in Sentences   Relevancy-0.2266913466 %96 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2220659 %88 %
10Entities in the HTML Tag   Relevancy-0.2274613770 %96 %
11Load Time Milliseconds   Performance-0.2210006164781 %92 %
12Variations in H1-H6 Tags   Relevancy-0.2222760 %90 %
13Variations in H1 and H2 Tags   Relevancy-0.2210456 %89 %
14Variations in Div Tags   Relevancy-0.2262510371 %94 %
15Variations in Body Tags   Relevancy-0.21179921576 %93 %
16Search Result Domain is .com, .net, or .org   Other-0.21115 %75 %
17Variations in Search Result URL Path   Relevancy-0.213142 %85 %
18Variations in HTML Tags   Relevancy-0.21179921375 %93 %
19Variations in P Tags   Relevancy-0.211312661 %91 %
20Variations in Search Result Document File Name   Relevancy-0.213139 %86 %
21Number of Factors Used   Diversity-0.2133916999 %89 %
22Number of Includes   Technology-0.21522676 %83 %
23Variation Count in Top 30KB   Relevancy-0.21751761 %89 %
24Variations in LI Tags   Relevancy-0.211721960 %92 %
25Variations in the Canonical URL   Relevancy-0.217144 %87 %
26Search Result Domain is .com   Other-0.21114 %75 %
27Clean Keyword Density in the HTML Tag   Relevancy-0.217365 %82 %
28Variations in Sentences   Relevancy-0.211652869 %92 %
29Term Frequency   Relevancy-0.24375 %89 %
30Variations in A Tags   Relevancy-0.21402261 %88 %
31Variations in First 100 Words   Relevancy-0.217561 %87 %
32Variations in the Title Tag   Relevancy-0.23261 %89 %
33Entities in H1 Tags-0.26250 %90 %
34Variations in H1 Tags   Relevancy-0.22149 %88 %
35Unabridged Word Count   Size-0.24437180181 %90 %
36Word Count   Size-0.23797139681 %90 %
37Number of HTML Tags   Size-0.23693109081 %88 %
38Clean Text Kilobytes   Size-0.2311272 %89 %
39Leading Variations in H1-H6 Tags   Relevancy-0.27241 %90 %
40LSI Words in Sentences   Relevancy-0.19316971361 %95 %
41Variations in Search Result Link Text   Relevancy-0.193279 %86 %
42Variations in Search Result Display URL   Relevancy-0.193279 %86 %
43Entities in H2 Tags-0.1929646 %90 %
44Leading Variations in H1, H2, and H3 Tags   Relevancy-0.196239 %89 %
45Number of Images   Size-0.191313372 %90 %
46Number of CSS Includes   Technology-0.19221069 %82 %
47Variations in A Tag HREF Attributes   Relevancy-0.193233755 %92 %
48Variations in H2 Tags   Relevancy-0.199340 %86 %
49Number of Images with ALT Text   Size-0.19912368 %88 %
50Variations in Search Result URL   Relevancy-0.193153 %80 %
51TF/IDF   Relevancy-0.191154 %87 %
52Number of Forms   Technology-0.1913353 %84 %
53Number of Heading Tags   Size-0.19552271 %87 %
54Variations in Distinct A Tag HREF Attributes   Relevancy-0.192442256 %92 %
55Number of Referring Domains   Authority-0.1917088449 %63 %
56Variations in Meta Description   Relevancy-0.194251 %85 %
57Variation Density in Top 30KB   Relevancy-0.197257 %85 %
58Variations in ALT Attributes   Relevancy-0.1855842 %86 %
59Number of P Tags   Size-0.181353870 %90 %
60Has Entities in H1 Tags   Relevancy-0.181150 %86 %
61Variations in Absolute URLs   Relevancy-0.182414657 %91 %
62Number of HTTPS Links   Authority-0.1841914777 %87 %
63Has Form   Technology-0.181152 %78 %
64Number of Facebook Pages   Authority-0.186253 %85 %
65Number of Links   Authority-0.1842214977 %87 %
66Number of Internal Links   Authority-0.1838713477 %87 %
67Number of DoFollow Links   Authority-0.1840914377 %87 %
68Variations in Main Tags   Relevancy-0.184845935 %88 %
69Has JSON-LD Schema Markup   Relevancy-0.181148 %78 %
70Title Tag Has Entities   Relevancy-0.181163 %89 %
71Variations in OpenGraph Description   Relevancy-0.184245 %83 %
72Search Result Number of Dirs in Path   Other-0.183271 %82 %
73Variations in OpenGraph Title   Relevancy-0.183150 %82 %
74Number of Backlinks   Authority-0.1899414495349 %64 %
75Variations in Span Tags   Relevancy-0.1835848 %90 %
76Entities in Meta Description Tag   Relevancy-0.188354 %90 %
77Number of External Links   Authority-0.18551574 %86 %
78Number of H1 Tags   Size-0.1710165 %88 %
79Variations in Script Tags   Relevancy-0.178537060 %86 %
80Number of HTML Comments   Size-0.174815867 %83 %
81Entities in H3 Tags-0.1729740 %92 %
82Average Words Per Sentence   Size-0.172293273 %82 %
83Number of H2 Tags   Size-0.1716763 %86 %
84Number of Images without ALT Text   Size-0.17601054 %88 %
85Number of Do Follow Backlinks   Authority-0.1793514421644 %63 %
86Percentage of DoFollow Internal Links   Authority-0.17896976 %85 %
87Number of DoFollow External Links   Authority-0.17531372 %87 %
88Percentage of DoFollow Links   Authority-0.17987977 %88 %
89Leading Variations in Title Tag   Relevancy-0.171130 %84 %
90LSI Words in Title Tag   Relevancy-0.1716563 %95 %
91Number of JavaScript Includes   Technology-0.17421778 %85 %
92Variations in Footer Tags   Relevancy-0.1739631 %84 %
93Leading Variations in H1 Tags   Relevancy-0.171125 %84 %
94Has Entities in H2 Tags   Relevancy-0.171147 %85 %
95Search Result Host Length   Size-0.16251680 %83 %
96Search Result Domain Length   Size-0.16251680 %83 %
97Has Meta Charset   Technology-0.161170 %84 %
98Number of No Follow Backlinks   Authority-0.161967357138 %61 %
99LSI Words in H1 Tags   Relevancy-0.1615452 %93 %
100Number of Sentences   Size-0.1652912379 %86 %
101Variations in Nav Tags   Relevancy-0.161652041 %85 %
102Variations in H3 Tags   Relevancy-0.1616331 %86 %
103Flesch Kincaid Reading Grade Level   Other-0.165195 %88 %
104Number of H3 Tags   Size-0.1631956 %83 %
105Inline CSS Kilobytes   Size-0.161695263 %88 %
106Has Canonical URL   Authority-0.161167 %81 %
107Exact Matches in the HTML Tag   Relevancy-0.16354923 %84 %
108Number of Nofollow Links   Authority-0.1544727 %80 %
109Leading Variations in H2 Tags   Relevancy-0.153119 %84 %
110Variations in Section Tags   Relevancy-0.15911432 %85 %
111LSI Words in Meta Description Tag   Relevancy-0.15351051 %91 %
112LSI Words in H2 Tags   Relevancy-0.15781849 %90 %
113Variations in the last 100 words   Relevancy-0.159344 %80 %
114Uses JSON-LD name   Other-0.151149 %77 %
115Variations Making Whole LI Tags   Relevancy-0.155122 %79 %
116Variations making whole H1-H6 Tags   Relevancy-0.152115 %85 %
117Number of Questions   Size-0.15641164 %79 %
118Number of Instagram Pages   Authority-0.158242 %79 %
119Number of Absolute URLs   Authority-0.1599029180 %83 %
120Number Of JSON-LD Types   Relevancy-0.151181353 %84 %
121Variations making whole H1, H2, and H3 Tags   Relevancy-0.151114 %84 %
122Number of Prices   Size-0.1529628168 %84 %
123Number of Questions In Headings   Size-0.157233 %84 %
124Percentage of DoFollow External Links   Authority-0.15301071 %84 %
125Has OpenGraph Type   Relevancy-0.151157 %71 %
126Variations in Meta Twitter Description   Relevancy-0.154123 %77 %
127Has Meta Twitter Card   Authority-0.151147 %66 %
128Has Meta Viewport   Technology-0.151178 %83 %
129Variations in Meta Twitter Content   Relevancy-0.152125 %74 %
130Entities in H4 Tags-0.159219 %92 %
131Page Size Kilobytes   Size-0.1585332380 %81 %
132Number of Social Pages   Authority-0.1511459 %83 %
133Uses JSON-LD url   Other-0.151144 %78 %
134Variations in I Tags   Relevancy-0.1511322 %84 %
135Has Email   Trust-0.151140 %72 %
136Meta Description Length   Size-0.1521711464 %79 %
137Headings Has Question   Other-0.151133 %78 %
138Number of Email Addresses   Trust-0.14170540 %83 %
139Search Result Uses HTTPS   Other-0.141181 %88 %
140Word Count in Meta Description   Size-0.14381963 %80 %
141Has Meta Description   Relevancy-0.141163 %76 %
142Search Result URL Length   Size-0.14926299 %67 %
143Number of LinkedIn Pages   Authority-0.143126 %78 %
144Has OpenGraph Image   Relevancy-0.141151 %68 %
145Variations in Strong Tags   Relevancy-0.1411223 %80 %
146Number of Facebook Accounts   Authority-0.142125 %79 %
147Uses Schema name   Other-0.141157 %72 %
148Number of US Phone Numbers   Trust-0.146011235 %83 %
149Variations making whole A Tags   Relevancy-0.146125 %79 %
150Title Word Count   Size-0.1418878 %79 %
151Has Entities in H3 Tags   Relevancy-0.141141 %84 %
152Title Length   Size-0.141224978 %80 %
153Exact Matches in H1-H6 Tags   Relevancy-0.1411114 %85 %
154Is Purchase Page   Other-0.141150 %72 %
155Uses Schema url   Other-0.141153 %72 %
156Uses JSON-LD CollectionPage   Other-0.14115 %42 %
157Uses Schema organization   Other-0.141133 %72 %
158Has Schema Markup   Relevancy-0.141160 %76 %
159Percentage of NoFollow Links   Authority-0.1411324 %77 %
160Uses Schema collectionpage   Other-0.14115 %41 %
161LSI Words in H3 Tags   Relevancy-0.141242144 %90 %
162Has FavIcon   Technology-0.141171 %79 %
163Meta Description Tag Has Entities   Relevancy-0.141154 %84 %
164Has Privacy Policy   Trust-0.141156 %79 %
165Variations in TITLE Attributes   Relevancy-0.1487536 %83 %
166Number of H4 Tags   Size-0.1420434 %86 %
167Is Store Page   Other-0.141146 %74 %
168Number of Questions In H3 Tags   Size-0.144116 %78 %
169Inline JavaScript Kilobytes   Size-0.1458712977 %77 %
170Has US Phone Number   Trust-0.131134 %75 %
171Has Meta Twitter Description   Authority-0.131128 %62 %
172Variations making whole H1 Tags   Relevancy-0.13119 %81 %
173Has Contact Page   Trust-0.131159 %77 %
174Has Terms of Service   Trust-0.131142 %71 %
175Uses JSON-LD ListItem   Other-0.131132 %74 %
176Uses Schema image   Other-0.131120 %72 %
177Uses JSON-LD image   Other-0.131115 %73 %
178Is Pagination Page   Other-0.131121 %69 %
179Variations Making Whole Span Tags   Relevancy-0.135118 %81 %
180Is Article Page   Other-0.131138 %71 %
181Has Meta Twitter Title   Authority-0.131130 %63 %
182Variations in ID Attributes   Relevancy-0.1310211 %82 %
183Exact Matches in Top 30KB   Relevancy-0.1324113 %78 %
184Uses JSON-LD Organization   Other-0.131129 %74 %
185Number of NoFollow External Links   Authority-0.1321318 %79 %
186Percentage of NoFollow Internal Links   Authority-0.138216 %75 %
187Variations in Value Attributes   Relevancy-0.1322111 %82 %
188Variations in H4-H6 Tags   Relevancy-0.1316116 %85 %
189Leading Variations in H3 Tags   Relevancy-0.135114 %80 %
190Uses JSON-LD description   Other-0.131135 %71 %
191Uses Schema listitem   Other-0.131140 %69 %
192Has Google Verify   Technology-0.131121 %71 %
193Variations in Button Tags   Relevancy-0.133829 %82 %
194Number of Questions In H2 Tags   Size-0.134120 %77 %
195Has Entities in H4 Tags   Relevancy-0.131120 %83 %
196Number of Social Accounts   Authority-0.124239 %80 %
197Uses Schema website   Other-0.121130 %65 %
198Exact Matches in Sentences   Relevancy-0.1225215 %84 %
199Is Home Page   Other-0.121119 %40 %
200Number Of Claimed Brands   Other-0.1218221 %74 %