Measures 150359 SEO Factors

148637 Built-In SEO Factors

139435 On-page SEO Factors

9202 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 2026-04     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-0.2489730779 %87 %
2Number of Unique Variations Used   Diversity-0.2432675 %90 %
3Number of Top 50 Shared Factors Used   Diversity-0.23161293 %93 %
4Number of Top 100 Shared Factors Used   Diversity-0.23372895 %95 %
5Number of Top 200 Shared Factors Used   Diversity-0.23503695 %95 %
6Load Time Milliseconds   Performance-0.2314022147881 %92 %
7Number of Distinct Entities Used   Diversity-0.21602774 %96 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.2117554 %89 %
9Variations in H1 and H2 Tags   Relevancy-0.2110352 %90 %
10Variations in H1-H6 Tags   Relevancy-0.2128655 %90 %
11Search Result Domain is .com, .net, or .org   Other-0.21116 %79 %
12Entities in Title Tag   Relevancy-0.217361 %92 %
13Variations in Search Result Display URL   Relevancy-0.213274 %82 %
14Variations in Search Result Link Text   Relevancy-0.213274 %82 %
15Variations in Body Tags   Relevancy-0.21111318672 %90 %
16Variations in HTML Tags   Relevancy-0.2111318571 %90 %
17Number of Factors Used   Diversity-0.226616795 %94 %
18Search Result Domain is .com   Other-0.2116 %78 %
19LSI Words in Sentences   Relevancy-0.2303382265 %95 %
20Variations in P Tags   Relevancy-0.22002557 %93 %
21Entities in Sentences   Relevancy-0.244913963 %96 %
22Entities in the HTML Tag   Relevancy-0.245114368 %97 %
23Term Frequency   Relevancy-0.24372 %89 %
24Variations in Div Tags   Relevancy-0.24739167 %93 %
25Variations in Sentences   Relevancy-0.191723164 %91 %
26LSI Words in Title Tag   Relevancy-0.1914770 %91 %
27Leading Variations in H1-H6 Tags   Relevancy-0.197236 %89 %
28Entities in H2 Tags-0.1927746 %94 %
29Variations in H1 Tags   Relevancy-0.193146 %87 %
30Variations in the Title Tag   Relevancy-0.193159 %87 %
31Variations in Search Result Document File Name   Relevancy-0.193138 %88 %
32Variation Count in Top 30KB   Relevancy-0.19811857 %87 %
33LSI Words in H1 Tags   Relevancy-0.1914555 %92 %
34Entities in H1 Tags-0.195247 %92 %
35Word Count   Size-0.184223143881 %89 %
36Leading Variations in H1, H2, and H3 Tags   Relevancy-0.187134 %90 %
37Unabridged Word Count   Size-0.188545208581 %90 %
38Number of Includes   Technology-0.18492575 %78 %
39Variations in LI Tags   Relevancy-0.18761656 %92 %
40Variations in Meta Description   Relevancy-0.184248 %84 %
41Variations in H2 Tags   Relevancy-0.189338 %89 %
42Entities in H3 Tags-0.1828638 %95 %
43Variations in A Tags   Relevancy-0.18911755 %92 %
44Clean Text Kilobytes   Size-0.18491466 %88 %
45Number of HTML Tags   Size-0.18271398481 %85 %
46Number of Facebook Pages   Authority-0.186250 %85 %
47Variations in Search Result URL Path   Relevancy-0.183140 %86 %
48LSI Words in H2 Tags   Relevancy-0.17962253 %93 %
49Variations in ALT Attributes   Relevancy-0.1753639 %84 %
50Variations in OpenGraph Title   Relevancy-0.172149 %81 %
51Number of Images with ALT Text   Size-0.17772062 %86 %
52Clean Keyword Density in the HTML Tag   Relevancy-0.178363 %85 %
53Number of P Tags   Size-0.17993765 %88 %
54Number of Heading Tags   Size-0.17531966 %86 %
55TF/IDF   Relevancy-0.171149 %87 %
56Variation Density in Top 30KB   Relevancy-0.177254 %85 %
57Number of CSS Includes   Technology-0.1717868 %80 %
58Has JSON-LD Schema Markup   Relevancy-0.171146 %85 %
59Variations in Span Tags   Relevancy-0.1724843 %88 %
60Variations in the Canonical URL   Relevancy-0.176141 %90 %
61Variations in Script Tags   Relevancy-0.174775857 %82 %
62Variations in OpenGraph Description   Relevancy-0.173143 %83 %
63Leading Variations in Title Tag   Relevancy-0.171125 %81 %
64Entities in Meta Description Tag   Relevancy-0.178352 %88 %
65Number of Images   Size-0.171032767 %88 %
66Search Result Number of Dirs in Path   Other-0.163273 %77 %
67Variations in Main Tags   Relevancy-0.162734933 %88 %
68Has Entities in H1 Tags   Relevancy-0.161148 %88 %
69Number of H2 Tags   Size-0.1616760 %90 %
70Variations in Search Result URL   Relevancy-0.163147 %84 %
71Variations in Absolute URLs   Relevancy-0.162084350 %91 %
72LSI Words in Meta Description Tag   Relevancy-0.16301257 %90 %
73Number of HTTPS Links   Authority-0.1660013673 %89 %
74Flesch Kincaid Reading Grade Level   Other-0.166192 %88 %
75Leading Variations in H1 Tags   Relevancy-0.161122 %88 %
76Number of H1 Tags   Size-0.163162 %91 %
77Number of Links   Authority-0.1660113773 %89 %
78Number of Questions In Headings   Size-0.1610232 %82 %
79Variations in A Tag HREF Attributes   Relevancy-0.161573149 %91 %
80Number of DoFollow Links   Authority-0.1659213473 %89 %
81Variations in Distinct A Tag HREF Attributes   Relevancy-0.161162048 %91 %
82Number of Internal Links   Authority-0.1659512372 %89 %
83Percentage of DoFollow Links   Authority-0.16987873 %88 %
84Variations in First 100 Words   Relevancy-0.1617557 %90 %
85Percentage of DoFollow Internal Links   Authority-0.16916872 %87 %
86Variations in Nav Tags   Relevancy-0.161681938 %87 %
87Has Entities in H2 Tags   Relevancy-0.161147 %91 %
88Number of Sentences   Size-0.1666013777 %82 %
89Number of Referring Domains   Authority-0.15701912743 %74 %
90Average Words Per Sentence   Size-0.151493171 %82 %
91Number of H3 Tags   Size-0.1528851 %84 %
92Variations in Section Tags   Relevancy-0.15551433 %88 %
93Has Canonical URL   Authority-0.151165 %79 %
94Search Result Uses HTTPS   Other-0.151180 %84 %
95Search Result Domain Length   Size-0.15231681 %85 %
96Search Result Host Length   Size-0.15231681 %85 %
97Title Tag Has Entities   Relevancy-0.151161 %86 %
98Number of Backlinks   Authority-0.1519454222540944 %77 %
99Number of DoFollow External Links   Authority-0.15291369 %83 %
100LSI Words in H3 Tags   Relevancy-0.151062245 %89 %
101Variations in H3 Tags   Relevancy-0.1511228 %86 %
102Number Of JSON-LD Types   Relevancy-0.152291649 %88 %
103Title Length   Size-0.151075278 %75 %
104Number of Absolute URLs   Authority-0.1592727079 %78 %
105Number of External Links   Authority-0.15311469 %85 %
106Title Word Count   Size-0.1518878 %77 %
107Number of Facebook Accounts   Authority-0.153124 %78 %
108Number of Forms   Technology-0.159246 %76 %
109Leading Variations in H2 Tags   Relevancy-0.154117 %85 %
110Number of No Follow Backlinks   Authority-0.1518513831171633 %67 %
111Headings Has Question   Other-0.151131 %81 %
112Number of HTML Comments   Size-0.153744562 %86 %
113Number of JavaScript Includes   Technology-0.15401776 %73 %
114Has Meta Charset   Technology-0.151167 %82 %
115Number of Do Follow Backlinks   Authority-0.1519453741616640 %74 %
116Has Meta Viewport   Technology-0.151177 %79 %
117Exact Matches in the HTML Tag   Relevancy-0.154321225 %86 %
118Has Meta Twitter Card   Authority-0.151149 %65 %
119Uses Schema name   Other-0.151156 %70 %
120Meta Description Length   Size-0.1520711862 %75 %
121Has Privacy Policy   Trust-0.141153 %80 %
122Word Count in Meta Description   Size-0.14391962 %75 %
123Uses JSON-LD name   Other-0.141147 %81 %
124Has OpenGraph Type   Relevancy-0.141157 %70 %
125Has Schema Markup   Relevancy-0.141159 %75 %
126Entities in H4 Tags-0.1414217 %91 %
127Has US Phone Number   Trust-0.141137 %74 %
128Number of H4 Tags   Size-0.1427430 %80 %
129Has Form   Technology-0.141146 %76 %
130Number of Images without ALT Text   Size-0.1442851 %85 %
131Has Entities in H3 Tags   Relevancy-0.141139 %86 %
132Has Contact Page   Trust-0.141157 %77 %
133Number of US Phone Numbers   Trust-0.141161037 %84 %
134Number of Questions   Size-0.14651263 %77 %
135Variations in Strong Tags   Relevancy-0.1410222 %83 %
136Variations in Footer Tags   Relevancy-0.1462630 %87 %
137Has Meta Description   Relevancy-0.141162 %76 %
138Page Size Kilobytes   Size-0.14103734879 %67 %
139Meta Description Tag Has Entities   Relevancy-0.141152 %82 %
140Uses JSON-LD url   Other-0.141140 %80 %
141Number of Questions In H2 Tags   Size-0.144120 %81 %
142Uses Schema url   Other-0.141151 %69 %
143Number of LinkedIn Pages   Authority-0.142127 %83 %
144Number of Instagram Pages   Authority-0.1417239 %76 %
145Inline CSS Kilobytes   Size-0.142075563 %85 %
146Number of Social Pages   Authority-0.1420558 %79 %
147Variations making whole H1-H6 Tags   Relevancy-0.141111 %79 %
148Has OpenGraph Image   Relevancy-0.141153 %70 %
149Variations Making Whole LI Tags   Relevancy-0.144118 %81 %
150Number of Social Accounts   Authority-0.137237 %85 %
151Uses JSON-LD description   Other-0.131138 %75 %
152Variations making whole A Tags   Relevancy-0.134123 %83 %
153Is Article Page   Other-0.131139 %70 %
154Is OpenGraph Type Article   Technology-0.131129 %67 %
155Uses JSON-LD datePublished   Other-0.131129 %67 %
156Percentage of DoFollow External Links   Authority-0.13241167 %83 %
157Variations Making Whole Span Tags   Relevancy-0.139115 %84 %
158Exact Matches in Sentences   Relevancy-0.1337319 %87 %
159Uses Schema listitem   Other-0.131138 %67 %
160Number of Prices   Size-0.1336410464 %78 %
161LSI Words in H4 Tags   Relevancy-0.1353726 %84 %
162Search Result URL Length   Size-0.13946595 %58 %
163Has FavIcon   Technology-0.131170 %70 %
164Uses Schema datemodified   Other-0.131128 %63 %
165Uses JSON-LD ListItem   Other-0.131131 %77 %
166Number of Questions In H3 Tags   Size-0.137115 %79 %
167Variations making whole H1, H2, and H3 Tags   Relevancy-0.131110 %81 %
168Uses JSON-LD ImageObject   Other-0.131129 %67 %
169Uses Schema website   Other-0.131128 %65 %
170Variations in Meta Twitter Content   Relevancy-0.132124 %69 %
171Inline JavaScript Kilobytes   Size-0.1352416574 %67 %
172Has Meta Robots   Other-0.131123 %75 %
173Number of Email Addresses   Trust-0.1358437 %80 %
174Number Of Claimed Brands   Other-0.1315221 %76 %
175Uses Schema breadcrumblist   Other-0.131137 %67 %
176Uses Schema description   Other-0.131145 %68 %
177Variations in Meta Twitter Description   Relevancy-0.132122 %72 %
178Variations in I Tags   Relevancy-0.1314318 %82 %
179Number of Nofollow Links   Authority-0.1318422 %80 %
180Uses Schema item   Other-0.131128 %57 %
181Uses JSON-LD dateModified   Other-0.131126 %66 %
182Uses JSON-LD BreadcrumbList   Other-0.131130 %76 %
183Is Pagination Page   Other-0.131117 %69 %
184Uses Schema imageobject   Other-0.131136 %58 %
185Has Entities in H4 Tags   Relevancy-0.131118 %80 %
186Variations in Article Tags   Relevancy-0.13561021 %81 %
187Percentage of NoFollow Links   Authority-0.1315220 %76 %
188Number of Twitter Accounts   Authority-0.122120 %77 %
189Has Terms of Service   Trust-0.121137 %69 %
190Is Purchase Page   Other-0.121147 %55 %
191Variations in TITLE Attributes   Relevancy-0.1237533 %80 %
192Variations in Button Tags   Relevancy-0.121728 %80 %
193Uses JSON-LD WebSite   Other-0.121125 %72 %
194Variations in the last 100 words   Relevancy-0.129239 %82 %
195Uses Schema organization   Other-0.121131 %72 %
196Search Result Summary Length   Size-0.1216315295 %71 %
197Uses JSON-LD Organization   Other-0.121128 %75 %
198Uses Schema webpage   Other-0.121129 %66 %
199Uses JSON-LD inLanguage   Other-0.121124 %65 %
200Uses Schema datepublished   Other-0.121135 %59 %