Measures 150492 SEO Factors

148770 Built-In SEO Factors

139568 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 %
1Search Result Domain is .com, .net, or .org   Other-0.23116 %79 %
2Number of Unique LSI Words Used   Diversity-0.2389729679 %77 %
3Load Time Milliseconds   Performance-0.2314022151881 %94 %
4Number of Unique Variations Used   Diversity-0.2332672 %90 %
5Number of Top 50 Shared Factors Used   Diversity-0.23161194 %94 %
6Number of Top 200 Shared Factors Used   Diversity-0.23503596 %94 %
7Number of Top 100 Shared Factors Used   Diversity-0.22382796 %94 %
8Search Result Domain is .com   Other-0.22116 %79 %
9Variations in H1-H6 Tags   Relevancy-0.21212754 %90 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.21192653 %90 %
11Variations in H1 and H2 Tags   Relevancy-0.2103451 %90 %
12Number of Distinct Entities Used   Diversity-0.2602671 %94 %
13Variations in Body Tags   Relevancy-0.2123426101270 %91 %
14Entities in Title Tag   Relevancy-0.27359 %93 %
15Variations in Div Tags   Relevancy-0.25727435664 %92 %
16Variations in HTML Tags   Relevancy-0.212342699769 %92 %
17Number of Factors Used   Diversity-0.227116496 %93 %
18Variations in P Tags   Relevancy-0.226373956 %92 %
19Entities in Sentences   Relevancy-0.1981813060 %96 %
20Entities in the HTML Tag   Relevancy-0.19198513565 %96 %
21Term Frequency   Relevancy-0.196369 %90 %
22Entities in H2 Tags-0.1927745 %94 %
23Variations in H1 Tags   Relevancy-0.1913145 %87 %
24Entities in H1 Tags-0.197247 %91 %
25Variations in Search Result Document File Name   Relevancy-0.199138 %88 %
26Variations in LI Tags   Relevancy-0.1931943254 %90 %
27Variations in Search Result Display URL   Relevancy-0.1916273 %84 %
28Variations in Search Result Link Text   Relevancy-0.1916273 %84 %
29Leading Variations in H1-H6 Tags   Relevancy-0.1920236 %89 %
30Word Count   Size-0.196860138081 %92 %
31Variations in Sentences   Relevancy-0.1952136462 %91 %
32Number of HTML Tags   Size-0.187638100580 %88 %
33Variations in the Title Tag   Relevancy-0.1814256 %88 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817235 %90 %
35Unabridged Word Count   Size-0.189481188680 %91 %
36Variations in A Tags   Relevancy-0.1859704754 %90 %
37Variation Count in Top 30KB   Relevancy-0.1844124856 %88 %
38Variations in Search Result URL Path   Relevancy-0.1810140 %88 %
39Number of Heading Tags   Size-0.18531967 %88 %
40Clean Text Kilobytes   Size-0.18591367 %90 %
41Variations in Meta Description   Relevancy-0.1834247 %84 %
42Number of P Tags   Size-0.181023566 %90 %
43Number of H1 Tags   Size-0.185162 %91 %
44Number of Includes   Technology-0.18492675 %82 %
45Number of Images with ALT Text   Size-0.181202063 %88 %
46Variations in the Canonical URL   Relevancy-0.1759241 %88 %
47Number of HTTPS Links   Authority-0.1760013373 %89 %
48Number of Links   Authority-0.1760113473 %89 %
49Number of Images   Size-0.171252768 %89 %
50Number of DoFollow Links   Authority-0.1759213173 %89 %
51Variations in H2 Tags   Relevancy-0.1799337 %89 %
52Number of H2 Tags   Size-0.1716760 %91 %
53LSI Words in Sentences   Relevancy-0.17332870759 %95 %
54Number of Internal Links   Authority-0.1759512172 %89 %
55Entities in H3 Tags-0.1728736 %94 %
56Variations in ALT Attributes   Relevancy-0.1712941239 %84 %
57Number of Facebook Pages   Authority-0.176250 %86 %
58TF/IDF   Relevancy-0.171148 %88 %
59Has Entities in H1 Tags   Relevancy-0.171147 %88 %
60Variations in Main Tags   Relevancy-0.172745819733 %88 %
61Clean Keyword Density in the HTML Tag   Relevancy-0.17177461 %83 %
62Variations in Span Tags   Relevancy-0.1714821542 %90 %
63Variations in A Tag HREF Attributes   Relevancy-0.1734884548 %90 %
64LSI Words in Title Tag   Relevancy-0.1727663 %93 %
65Variations in Search Result URL   Relevancy-0.1719248 %85 %
66Entities in Meta Description Tag   Relevancy-0.178351 %90 %
67Variations in Absolute URLs   Relevancy-0.171033611251 %92 %
68Variations in Distinct A Tag HREF Attributes   Relevancy-0.1721333048 %91 %
69Leading Variations in H1 Tags   Relevancy-0.172123 %85 %
70Variations in OpenGraph Title   Relevancy-0.1612148 %83 %
71Number of Forms   Technology-0.1612247 %80 %
72Leading Variations in Title Tag   Relevancy-0.161126 %83 %
73Variations in OpenGraph Description   Relevancy-0.1632242 %82 %
74Search Result Number of Dirs in Path   Other-0.163272 %79 %
75Percentage of DoFollow Links   Authority-0.161007773 %89 %
76LSI Words in H1 Tags   Relevancy-0.1615450 %94 %
77Percentage of DoFollow Internal Links   Authority-0.16946772 %86 %
78Variations in Script Tags   Relevancy-0.165826840156 %88 %
79Variation Density in Top 30KB   Relevancy-0.16279452 %84 %
80Has Entities in H2 Tags   Relevancy-0.161145 %90 %
81Number of CSS Includes   Technology-0.1622968 %83 %
82Variations in First 100 Words   Relevancy-0.16178656 %89 %
83Has JSON-LD Schema Markup   Relevancy-0.161147 %83 %
84Average Words Per Sentence   Size-0.161593271 %86 %
85Number of H3 Tags   Size-0.1628852 %86 %
86Number of HTML Comments   Size-0.164094963 %88 %
87Number of Referring Domains   Authority-0.16701912244 %76 %
88Number Of JSON-LD Types   Relevancy-0.162291850 %88 %
89Number of DoFollow External Links   Authority-0.16561268 %88 %
90Number of Backlinks   Authority-0.1619454221350844 %78 %
91Flesch Kincaid Reading Grade Level   Other-0.166193 %89 %
92Variations in Nav Tags   Relevancy-0.16107564038 %87 %
93Number of External Links   Authority-0.16591469 %89 %
94Number of Sentences   Size-0.1666013477 %86 %
95Exact Matches in the HTML Tag   Relevancy-0.154321125 %87 %
96Search Result Domain Length   Size-0.15251680 %83 %
97Search Result Host Length   Size-0.15251680 %83 %
98Variations in Section Tags   Relevancy-0.1516112031 %88 %
99Number of Images without ALT Text   Size-0.1571851 %88 %
100Has Form   Technology-0.151146 %78 %
101Search Result Uses HTTPS   Other-0.151180 %84 %
102Number of Do Follow Backlinks   Authority-0.151945374910240 %77 %
103LSI Words in H2 Tags   Relevancy-0.15962048 %94 %
104Has Canonical URL   Authority-0.151165 %82 %
105Number of JavaScript Includes   Technology-0.15401876 %79 %
106Has Meta Charset   Technology-0.151168 %83 %
107Number of Absolute URLs   Authority-0.15106326178 %81 %
108Number of Questions In Headings   Size-0.1510231 %83 %
109Title Tag Has Entities   Relevancy-0.151159 %88 %
110Inline CSS Kilobytes   Size-0.152075662 %84 %
111Number of US Phone Numbers   Trust-0.153451137 %85 %
112Has Privacy Policy   Trust-0.151154 %79 %
113Variations in H3 Tags   Relevancy-0.15119328 %86 %
114Has US Phone Number   Trust-0.151138 %76 %
115Uses JSON-LD name   Other-0.141148 %82 %
116LSI Words in Meta Description Tag   Relevancy-0.14551051 %91 %
117Number of Facebook Accounts   Authority-0.143124 %81 %
118Page Size Kilobytes   Size-0.14103733979 %73 %
119Number of No Follow Backlinks   Authority-0.141851383488333 %70 %
120Word Count in Meta Description   Size-0.14821962 %80 %
121Meta Description Length   Size-0.1454611663 %80 %
122Has Meta Viewport   Technology-0.141177 %83 %
123Title Word Count   Size-0.1440878 %79 %
124Has Entities in H3 Tags   Relevancy-0.141137 %87 %
125Number of Social Accounts   Authority-0.147236 %85 %
126Leading Variations in H2 Tags   Relevancy-0.147117 %86 %
127Uses Schema name   Other-0.141156 %74 %
128Title Length   Size-0.142365178 %79 %
129Has Schema Markup   Relevancy-0.141159 %78 %
130Number of H4 Tags   Size-0.1427330 %81 %
131Has Meta Description   Relevancy-0.141162 %80 %
132Number of LinkedIn Pages   Authority-0.143126 %83 %
133Variations in Footer Tags   Relevancy-0.1438282129 %86 %
134Variations making whole H1-H6 Tags   Relevancy-0.142112 %82 %
135Percentage of DoFollow External Links   Authority-0.14241167 %84 %
136Number of Social Pages   Authority-0.1420456 %81 %
137Number of Questions   Size-0.14671161 %79 %
138Headings Has Question   Other-0.141130 %80 %
139Has Contact Page   Trust-0.141156 %76 %
140Uses JSON-LD url   Other-0.141141 %81 %
141Exact Matches in H1-H6 Tags   Relevancy-0.1413117 %85 %
142Number of Instagram Pages   Authority-0.1417240 %78 %
143Variations Making Whole LI Tags   Relevancy-0.144118 %82 %
144Meta Description Tag Has Entities   Relevancy-0.131150 %83 %
145Uses Schema url   Other-0.131151 %72 %
146Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %82 %
147Entities in H4 Tags-0.1314216 %89 %
148Number of Prices   Size-0.135199765 %80 %
149Uses JSON-LD ListItem   Other-0.131130 %77 %
150Has Terms of Service   Trust-0.131138 %73 %
151Variations in Strong Tags   Relevancy-0.13110221 %82 %
152Number of Nofollow Links   Authority-0.1322322 %81 %
153Uses JSON-LD BreadcrumbList   Other-0.131130 %76 %
154Has OpenGraph Type   Relevancy-0.131157 %74 %
155Variations Making Whole Span Tags   Relevancy-0.139115 %87 %
156Uses Schema product   Other-0.131112 %52 %
157Uses JSON-LD description   Other-0.131138 %77 %
158Number of Questions In H2 Tags   Size-0.136120 %78 %
159Has OpenGraph Image   Relevancy-0.131152 %72 %
160LSI Words in H3 Tags   Relevancy-0.131062142 %91 %
161Has FavIcon   Technology-0.131169 %73 %
162Uses Schema organization   Other-0.131131 %72 %
163Variations making whole A Tags   Relevancy-0.13101222 %83 %
164Is Article Page   Other-0.131138 %71 %
165Has Meta Twitter Card   Authority-0.131149 %65 %
166Number of Email Addresses   Trust-0.1377438 %81 %
167Exact Matches in Sentences   Relevancy-0.1348318 %88 %
168Inline JavaScript Kilobytes   Size-0.1352415174 %71 %
169Exact Matches in Top 30KB   Relevancy-0.1319115 %82 %
170Uses JSON-LD Product   Other-0.131111 %54 %
171Uses JSON-LD Organization   Other-0.131128 %76 %
172Number of Twitter Accounts   Authority-0.132119 %78 %
173Uses Schema listitem   Other-0.131138 %69 %
174Variations in I Tags   Relevancy-0.13394418 %83 %
175Variations in Meta Twitter Description   Relevancy-0.1220122 %73 %
176Exact Matches in Title Tag   Relevancy-0.122115 %85 %
177Uses Schema breadcrumblist   Other-0.121138 %69 %
178Uses Schema description   Other-0.121145 %69 %
179Percentage of NoFollow Links   Authority-0.1215220 %78 %
180Uses Schema sku   Other-0.12118 %33 %
181Uses Schema medicalwebpage   Other-0.12113 %13 %
182Number Of Claimed Brands   Other-0.1220221 %76 %
183Uses JSON-LD MedicalWebPage   Other-0.12113 %13 %
184Uses JSON-LD sku   Other-0.12117 %34 %
185Variations in TITLE Attributes   Relevancy-0.12563832 %83 %
186Is OpenGraph Type Article   Technology-0.121128 %66 %
187Is Store Page   Other-0.121143 %68 %
188Is Pagination Page   Other-0.121117 %68 %
189Has Email   Trust-0.121137 %72 %
190Has Google Verify   Technology-0.121119 %73 %
191Is Purchase Page   Other-0.121145 %62 %
192Has Meta Robots   Other-0.121122 %74 %
193Variations in Article Tags   Relevancy-0.1213381320 %81 %
194Uses Schema image   Other-0.121120 %70 %
195Search Result Summary Length   Size-0.1216315396 %71 %
196Variations in Button Tags   Relevancy-0.123495299 %81 %
197Number of NoFollow External Links   Authority-0.1220215 %78 %
198Search Result URL Length   Size-0.12986497 %62 %
199Number of Questions In H3 Tags   Size-0.127115 %76 %
200Variations in B Tags   Relevancy-0.1296210 %80 %