Measures 150410 SEO Factors

148688 Built-In SEO Factors

139486 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 Variations Used   Diversity-0.2432674 %91 %
2Number of Unique LSI Words Used   Diversity-0.2389730579 %85 %
3Number of Top 50 Shared Factors Used   Diversity-0.23161293 %94 %
4Number of Top 200 Shared Factors Used   Diversity-0.22503796 %95 %
5Load Time Milliseconds   Performance-0.2214022144481 %92 %
6Number of Top 100 Shared Factors Used   Diversity-0.22382896 %95 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %77 %
8Number of Distinct Entities Used   Diversity-0.21602773 %95 %
9Entities in Title Tag   Relevancy-0.27361 %93 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.2192655 %90 %
11Variations in H1 and H2 Tags   Relevancy-0.2103453 %91 %
12Variations in H1-H6 Tags   Relevancy-0.2212756 %90 %
13Variations in Body Tags   Relevancy-0.212342662072 %91 %
14Search Result Domain is .com   Other-0.2115 %76 %
15Variations in HTML Tags   Relevancy-0.212342661772 %91 %
16Number of Factors Used   Diversity-0.226616896 %94 %
17Variations in P Tags   Relevancy-0.226133358 %92 %
18Variations in Search Result Display URL   Relevancy-0.213275 %84 %
19Variations in Search Result Link Text   Relevancy-0.213275 %84 %
20Term Frequency   Relevancy-0.25372 %90 %
21Variations in Div Tags   Relevancy-0.195727425367 %92 %
22LSI Words in Title Tag   Relevancy-0.1927668 %92 %
23Variations in Sentences   Relevancy-0.1952135064 %91 %
24Entities in H2 Tags-0.1927747 %93 %
25Variations in the Title Tag   Relevancy-0.1912259 %88 %
26Entities in Sentences   Relevancy-0.1944913762 %96 %
27Entities in the HTML Tag   Relevancy-0.1945114167 %96 %
28Variations in Search Result Document File Name   Relevancy-0.195139 %88 %
29LSI Words in Sentences   Relevancy-0.19303378863 %94 %
30Leading Variations in H1-H6 Tags   Relevancy-0.1920237 %88 %
31Variations in H1 Tags   Relevancy-0.1913147 %87 %
32Entities in H1 Tags-0.185249 %91 %
33Variation Count in Top 30KB   Relevancy-0.1841033558 %89 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817236 %90 %
35Word Count   Size-0.184223140481 %88 %
36LSI Words in H1 Tags   Relevancy-0.1814554 %93 %
37Unabridged Word Count   Size-0.188545197081 %89 %
38Variations in H2 Tags   Relevancy-0.1899339 %91 %
39Variations in Meta Description   Relevancy-0.1831249 %86 %
40Variations in LI Tags   Relevancy-0.1831942656 %92 %
41Variations in A Tags   Relevancy-0.1859703555 %91 %
42Number of Includes   Technology-0.18492576 %81 %
43Variations in Search Result URL Path   Relevancy-0.187141 %88 %
44Number of HTML Tags   Size-0.17271397181 %84 %
45Variations in OpenGraph Title   Relevancy-0.1712149 %83 %
46Variations in the Canonical URL   Relevancy-0.1734242 %90 %
47TF/IDF   Relevancy-0.171150 %88 %
48Clean Text Kilobytes   Size-0.17491367 %87 %
49Leading Variations in Title Tag   Relevancy-0.171127 %81 %
50Clean Keyword Density in the HTML Tag   Relevancy-0.17145463 %86 %
51Entities in H3 Tags-0.1728738 %94 %
52Variations in ALT Attributes   Relevancy-0.17830940 %83 %
53Number of P Tags   Size-0.17993666 %87 %
54Variations in Script Tags   Relevancy-0.174187921258 %86 %
55Number of Images with ALT Text   Size-0.17772063 %85 %
56Number of Facebook Pages   Authority-0.176251 %86 %
57Entities in Meta Description Tag   Relevancy-0.178353 %89 %
58Variation Density in Top 30KB   Relevancy-0.17209354 %87 %
59Number of Heading Tags   Size-0.17532067 %87 %
60Variations in OpenGraph Description   Relevancy-0.1729243 %85 %
61Variations in Search Result URL   Relevancy-0.1719249 %85 %
62LSI Words in H2 Tags   Relevancy-0.17962253 %93 %
63Variations in Span Tags   Relevancy-0.1714821344 %89 %
64Number of H2 Tags   Size-0.1716761 %88 %
65Has Entities in H1 Tags   Relevancy-0.161148 %87 %
66Search Result Number of Dirs in Path   Other-0.163273 %77 %
67Number of Images   Size-0.161032768 %86 %
68Number of CSS Includes   Technology-0.1622968 %83 %
69Has JSON-LD Schema Markup   Relevancy-0.161147 %85 %
70Number of H1 Tags   Size-0.163162 %90 %
71Variations in Absolute URLs   Relevancy-0.1666026951 %93 %
72Leading Variations in H1 Tags   Relevancy-0.162123 %86 %
73Number of HTTPS Links   Authority-0.1660013273 %87 %
74Number of Internal Links   Authority-0.1659512072 %86 %
75Number of Links   Authority-0.1660113373 %87 %
76Number of DoFollow Links   Authority-0.1659213073 %88 %
77Variations in Main Tags   Relevancy-0.162745813433 %88 %
78Variations in A Tag HREF Attributes   Relevancy-0.1634884150 %92 %
79LSI Words in Meta Description Tag   Relevancy-0.16301156 %91 %
80Flesch Kincaid Reading Grade Level   Other-0.166192 %89 %
81Variations in First 100 Words   Relevancy-0.16130658 %91 %
82Variations in Distinct A Tag HREF Attributes   Relevancy-0.1621332650 %92 %
83Percentage of DoFollow Links   Authority-0.161007873 %90 %
84Percentage of DoFollow Internal Links   Authority-0.16946872 %87 %
85Has Entities in H2 Tags   Relevancy-0.161148 %90 %
86Number of Questions In Headings   Size-0.1510232 %84 %
87Variations in Section Tags   Relevancy-0.1516112033 %86 %
88Variations in Nav Tags   Relevancy-0.15107564739 %86 %
89Search Result Domain Length   Size-0.15251681 %84 %
90Search Result Host Length   Size-0.15251681 %84 %
91Number of Sentences   Size-0.1566013777 %84 %
92Average Words Per Sentence   Size-0.151493171 %86 %
93Search Result Uses HTTPS   Other-0.151180 %82 %
94Exact Matches in the HTML Tag   Relevancy-0.154321125 %87 %
95Number Of JSON-LD Types   Relevancy-0.152291750 %88 %
96Has Meta Charset   Technology-0.151168 %81 %
97Has Canonical URL   Authority-0.151166 %82 %
98Number of H3 Tags   Size-0.1528853 %84 %
99Variations in H3 Tags   Relevancy-0.1590329 %87 %
100Title Tag Has Entities   Relevancy-0.151162 %88 %
101Number of DoFollow External Links   Authority-0.15561268 %84 %
102Number of Referring Domains   Authority-0.15701912144 %75 %
103Title Word Count   Size-0.1540879 %79 %
104Number of JavaScript Includes   Technology-0.15401776 %76 %
105Number of Backlinks   Authority-0.1519454222050644 %77 %
106Number of Absolute URLs   Authority-0.1592726279 %80 %
107Number of HTML Comments   Size-0.154094563 %87 %
108Title Length   Size-0.152365379 %78 %
109Leading Variations in H2 Tags   Relevancy-0.157118 %87 %
110Number of Forms   Technology-0.159246 %78 %
111Number of External Links   Authority-0.15591469 %87 %
112Word Count in Meta Description   Size-0.14391963 %79 %
113Has Meta Viewport   Technology-0.141177 %81 %
114Number of Images without ALT Text   Size-0.1471851 %86 %
115Number of Do Follow Backlinks   Authority-0.1419453741343340 %75 %
116LSI Words in H3 Tags   Relevancy-0.141062245 %88 %
117Number of Facebook Accounts   Authority-0.143124 %78 %
118Meta Description Length   Size-0.1420711663 %79 %
119Headings Has Question   Other-0.141131 %82 %
120Uses JSON-LD name   Other-0.141148 %83 %
121Uses Schema name   Other-0.141156 %72 %
122Variations making whole H1-H6 Tags   Relevancy-0.142112 %81 %
123Has Meta Twitter Card   Authority-0.141150 %68 %
124Number of No Follow Backlinks   Authority-0.141851383848034 %69 %
125Has Privacy Policy   Trust-0.141153 %81 %
126Has Schema Markup   Relevancy-0.141159 %77 %
127Has Meta Description   Relevancy-0.141162 %80 %
128Variations in Footer Tags   Relevancy-0.1438281831 %86 %
129Has Entities in H3 Tags   Relevancy-0.141139 %85 %
130Number of US Phone Numbers   Trust-0.141311037 %82 %
131Variations Making Whole LI Tags   Relevancy-0.144119 %83 %
132Meta Description Tag Has Entities   Relevancy-0.141153 %84 %
133Has Form   Technology-0.141146 %78 %
134Has OpenGraph Type   Relevancy-0.141158 %73 %
135Number of Questions   Size-0.14651263 %79 %
136Page Size Kilobytes   Size-0.14103733879 %70 %
137Variations in Strong Tags   Relevancy-0.1472223 %83 %
138Has US Phone Number   Trust-0.141138 %74 %
139Has Contact Page   Trust-0.141156 %77 %
140Entities in H4 Tags-0.1414217 %90 %
141Has OpenGraph Image   Relevancy-0.141153 %70 %
142Inline CSS Kilobytes   Size-0.142075663 %84 %
143Number of H4 Tags   Size-0.1427330 %81 %
144Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %82 %
145Number of LinkedIn Pages   Authority-0.133126 %83 %
146Variations making whole A Tags   Relevancy-0.13101224 %84 %
147Percentage of DoFollow External Links   Authority-0.13241167 %84 %
148Uses JSON-LD description   Other-0.131139 %77 %
149Number of Questions In H2 Tags   Size-0.134120 %80 %
150Uses Schema url   Other-0.131152 %73 %
151Uses JSON-LD url   Other-0.131141 %82 %
152Number of Social Pages   Authority-0.1320458 %81 %
153Number of Social Accounts   Authority-0.137237 %86 %
154Is Article Page   Other-0.131139 %73 %
155Number of Email Addresses   Trust-0.1358438 %82 %
156Is OpenGraph Type Article   Technology-0.131129 %68 %
157Has FavIcon   Technology-0.131170 %72 %
158Variations Making Whole Span Tags   Relevancy-0.139116 %86 %
159Exact Matches in H1-H6 Tags   Relevancy-0.1313116 %87 %
160Exact Matches in Sentences   Relevancy-0.1341319 %88 %
161Uses JSON-LD ListItem   Other-0.131131 %78 %
162Number of Instagram Pages   Authority-0.1317240 %79 %
163Uses Schema description   Other-0.131145 %71 %
164Uses JSON-LD datePublished   Other-0.131130 %68 %
165Uses Schema website   Other-0.131129 %66 %
166Inline JavaScript Kilobytes   Size-0.1352415675 %71 %
167Number Of Claimed Brands   Other-0.1315221 %78 %
168Number of Questions In H3 Tags   Size-0.137115 %78 %
169Uses JSON-LD BreadcrumbList   Other-0.131130 %77 %
170Number of Prices   Size-0.133919765 %79 %
171Variations in the last 100 words   Relevancy-0.13122341 %84 %
172Uses Schema listitem   Other-0.131139 %70 %
173Variations in Meta Twitter Description   Relevancy-0.1320122 %75 %
174Variations in Meta Twitter Content   Relevancy-0.125124 %73 %
175Uses Schema datemodified   Other-0.121128 %64 %
176Variations in I Tags   Relevancy-0.12226318 %82 %
177Exact Matches in Title Tag   Relevancy-0.122114 %85 %
178Uses Schema breadcrumblist   Other-0.121138 %70 %
179Has Email   Trust-0.121137 %74 %
180Variations in TITLE Attributes   Relevancy-0.12509633 %82 %
181Uses JSON-LD inLanguage   Other-0.121125 %65 %
182Uses JSON-LD WebSite   Other-0.121126 %73 %
183Uses JSON-LD dateModified   Other-0.121127 %68 %
184Uses JSON-LD ImageObject   Other-0.121129 %69 %
185Leading Variations in H3 Tags   Relevancy-0.1210112 %79 %
186Number of Nofollow Links   Authority-0.1218422 %81 %
187Number of Twitter Accounts   Authority-0.122120 %77 %
188Uses Schema inlanguage   Other-0.121125 %63 %
189Uses Schema webpage   Other-0.121130 %69 %
190Exact Matches in Top 30KB   Relevancy-0.1212114 %84 %
191Variations in Article Tags   Relevancy-0.1213381321 %82 %
192Uses JSON-LD WebPage   Other-0.121129 %69 %
193Uses Schema item   Other-0.121129 %61 %
194Uses Schema imageobject   Other-0.121135 %61 %
195Uses Schema organization   Other-0.121131 %73 %
196LSI Words in H4 Tags   Relevancy-0.1253725 %86 %
197Uses JSON-LD Organization   Other-0.121128 %76 %
198Percentage of NoFollow Links   Authority-0.1215220 %77 %
199Has Google Verify   Technology-0.121119 %72 %
200Has Meta Robots   Other-0.121122 %75 %