Measures 150496 SEO Factors

148774 Built-In SEO Factors

139572 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 %80 %
2Number of Unique LSI Words Used   Diversity-0.2389729579 %76 %
3Load Time Milliseconds   Performance-0.2314022155381 %94 %
4Number of Top 50 Shared Factors Used   Diversity-0.23161194 %94 %
5Number of Unique Variations Used   Diversity-0.2332672 %90 %
6Number of Top 200 Shared Factors Used   Diversity-0.23503596 %95 %
7Number of Top 100 Shared Factors Used   Diversity-0.22382796 %95 %
8Search Result Domain is .com   Other-0.22116 %80 %
9Variations in H1-H6 Tags   Relevancy-0.21212754 %90 %
10Variations in H1 and H2 Tags   Relevancy-0.21103451 %90 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.21192653 %91 %
12Number of Distinct Entities Used   Diversity-0.21602671 %94 %
13Variations in Body Tags   Relevancy-0.212342698670 %91 %
14Entities in Title Tag   Relevancy-0.27359 %93 %
15Variations in Div Tags   Relevancy-0.25727434864 %92 %
16Variations in HTML Tags   Relevancy-0.212342697269 %92 %
17Variations in P Tags   Relevancy-0.226373856 %93 %
18Number of Factors Used   Diversity-0.227116496 %93 %
19Entities in Sentences   Relevancy-0.1981813160 %96 %
20Entities in the HTML Tag   Relevancy-0.19198513665 %96 %
21Entities in H2 Tags-0.1927745 %94 %
22Term Frequency   Relevancy-0.196369 %91 %
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 Search Result Display URL   Relevancy-0.1916274 %84 %
27Variations in Search Result Link Text   Relevancy-0.1916274 %84 %
28Variations in LI Tags   Relevancy-0.1931943154 %90 %
29Leading Variations in H1-H6 Tags   Relevancy-0.1920236 %89 %
30Variations in Sentences   Relevancy-0.1952136362 %91 %
31Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1917235 %90 %
32Word Count   Size-0.196860137880 %92 %
33Variations in the Title Tag   Relevancy-0.1914256 %88 %
34Number of HTML Tags   Size-0.187638100480 %88 %
35Variation Count in Top 30KB   Relevancy-0.1844124756 %88 %
36Variations in A Tags   Relevancy-0.1859704653 %90 %
37Unabridged Word Count   Size-0.189481188680 %92 %
38Variations in Search Result URL Path   Relevancy-0.1810140 %88 %
39Number of Heading Tags   Size-0.18531967 %89 %
40Variations in Meta Description   Relevancy-0.1834247 %84 %
41Clean Text Kilobytes   Size-0.18591367 %90 %
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 %
46Number of HTTPS Links   Authority-0.1760013273 %89 %
47Number of Links   Authority-0.1760113373 %89 %
48Variations in the Canonical URL   Relevancy-0.1759241 %88 %
49Variations in H2 Tags   Relevancy-0.1799337 %90 %
50Number of DoFollow Links   Authority-0.1759213173 %90 %
51Number of H2 Tags   Size-0.1716760 %91 %
52Number of Images   Size-0.171252768 %89 %
53Number of Internal Links   Authority-0.1759512172 %89 %
54TF/IDF   Relevancy-0.171148 %88 %
55Variations in ALT Attributes   Relevancy-0.1712941239 %84 %
56Entities in H3 Tags-0.1728737 %95 %
57Has Entities in H1 Tags   Relevancy-0.171147 %88 %
58Number of Facebook Pages   Authority-0.176250 %86 %
59LSI Words in Sentences   Relevancy-0.17332870158 %95 %
60Variations in Main Tags   Relevancy-0.172745819333 %89 %
61Clean Keyword Density in the HTML Tag   Relevancy-0.17177461 %83 %
62Variations in Span Tags   Relevancy-0.1714821542 %91 %
63Variations in A Tag HREF Attributes   Relevancy-0.1734884448 %91 %
64Entities in Meta Description Tag   Relevancy-0.178351 %90 %
65Variations in Search Result URL   Relevancy-0.1719248 %85 %
66Variations in Absolute URLs   Relevancy-0.171033611051 %92 %
67Variations in Distinct A Tag HREF Attributes   Relevancy-0.1721332948 %91 %
68Leading Variations in H1 Tags   Relevancy-0.172123 %86 %
69Leading Variations in Title Tag   Relevancy-0.171126 %84 %
70LSI Words in Title Tag   Relevancy-0.1727662 %93 %
71Variations in OpenGraph Description   Relevancy-0.1732242 %83 %
72Number of Forms   Technology-0.1712247 %81 %
73Variations in OpenGraph Title   Relevancy-0.1712148 %83 %
74Percentage of DoFollow Links   Authority-0.161007773 %90 %
75Variations in Script Tags   Relevancy-0.165826839156 %88 %
76Search Result Number of Dirs in Path   Other-0.163272 %79 %
77Has Entities in H2 Tags   Relevancy-0.161145 %90 %
78Percentage of DoFollow Internal Links   Authority-0.16946772 %86 %
79Variation Density in Top 30KB   Relevancy-0.16279452 %84 %
80LSI Words in H1 Tags   Relevancy-0.1615450 %94 %
81Variations in First 100 Words   Relevancy-0.16178656 %89 %
82Number of CSS Includes   Technology-0.1622968 %83 %
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-0.16701912344 %76 %
88Number of DoFollow External Links   Authority-0.16561268 %88 %
89Number of External Links   Authority-0.16591469 %90 %
90Flesch Kincaid Reading Grade Level   Other-0.166193 %89 %
91Number Of JSON-LD Types   Relevancy-0.162291750 %88 %
92Variations in Nav Tags   Relevancy-0.16107563937 %87 %
93Number of Sentences   Size-0.1666013376 %86 %
94Number of Backlinks   Authority-0.1619454221324144 %78 %
95Number of Images without ALT Text   Size-0.1571851 %88 %
96Search Result Domain Length   Size-0.15251680 %83 %
97Search Result Host Length   Size-0.15251680 %83 %
98Variations in Section Tags   Relevancy-0.1516112031 %89 %
99Exact Matches in the HTML Tag   Relevancy-0.154321226 %88 %
100Search Result Uses HTTPS   Other-0.151180 %84 %
101Has Form   Technology-0.151146 %78 %
102Number of Do Follow Backlinks   Authority-0.151945374894640 %77 %
103Has Canonical URL   Authority-0.151165 %82 %
104Number of JavaScript Includes   Technology-0.15401876 %79 %
105Has Meta Charset   Technology-0.151168 %83 %
106Number of Absolute URLs   Authority-0.15106326078 %81 %
107LSI Words in H2 Tags   Relevancy-0.15962048 %94 %
108Title Tag Has Entities   Relevancy-0.151159 %88 %
109Inline CSS Kilobytes   Size-0.152075662 %84 %
110Number of Questions In Headings   Size-0.1510231 %83 %
111Variations in H3 Tags   Relevancy-0.15119328 %86 %
112Has Privacy Policy   Trust-0.151153 %79 %
113Has US Phone Number   Trust-0.151138 %76 %
114Number of US Phone Numbers   Trust-0.153451137 %85 %
115Uses JSON-LD name   Other-0.141148 %82 %
116LSI Words in Meta Description Tag   Relevancy-0.14551051 %92 %
117Page Size Kilobytes   Size-0.14103733878 %73 %
118Number of No Follow Backlinks   Authority-0.141851383476933 %70 %
119Has Meta Viewport   Technology-0.141177 %83 %
120Number of Facebook Accounts   Authority-0.143124 %81 %
121Has Entities in H3 Tags   Relevancy-0.141137 %88 %
122Title Word Count   Size-0.1440878 %79 %
123Word Count in Meta Description   Size-0.14821962 %80 %
124Leading Variations in H2 Tags   Relevancy-0.147117 %86 %
125Meta Description Length   Size-0.1454611662 %80 %
126Number of Social Accounts   Authority-0.147236 %85 %
127Uses Schema name   Other-0.141156 %74 %
128Title Length   Size-0.142365178 %79 %
129Has Schema Markup   Relevancy-0.141159 %79 %
130Variations making whole H1-H6 Tags   Relevancy-0.142112 %82 %
131Percentage of DoFollow External Links   Authority-0.14241167 %84 %
132Number of H4 Tags   Size-0.1427330 %82 %
133Has Meta Description   Relevancy-0.141161 %79 %
134Number of LinkedIn Pages   Authority-0.143126 %83 %
135Variations in Footer Tags   Relevancy-0.1438282029 %86 %
136Number of Questions   Size-0.14671161 %79 %
137Has Contact Page   Trust-0.141156 %77 %
138Number of Social Pages   Authority-0.1420456 %81 %
139Headings Has Question   Other-0.141130 %80 %
140Uses JSON-LD url   Other-0.141141 %81 %
141Variations Making Whole LI Tags   Relevancy-0.144118 %82 %
142Exact Matches in H1-H6 Tags   Relevancy-0.1313117 %85 %
143Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %82 %
144Number of Instagram Pages   Authority-0.1317240 %78 %
145Meta Description Tag Has Entities   Relevancy-0.131150 %83 %
146Uses Schema url   Other-0.131151 %72 %
147Entities in H4 Tags-0.1314216 %89 %
148Has Terms of Service   Trust-0.131138 %73 %
149Variations in Strong Tags   Relevancy-0.13110221 %83 %
150Number of Prices   Size-0.135199765 %80 %
151Uses JSON-LD ListItem   Other-0.131130 %77 %
152Variations Making Whole Span Tags   Relevancy-0.139115 %87 %
153Number of Nofollow Links   Authority-0.1322322 %82 %
154Has OpenGraph Image   Relevancy-0.131152 %72 %
155Has OpenGraph Type   Relevancy-0.131157 %74 %
156Uses JSON-LD BreadcrumbList   Other-0.131130 %76 %
157Uses JSON-LD description   Other-0.131138 %77 %
158Uses Schema product   Other-0.131112 %53 %
159Number of Questions In H2 Tags   Size-0.136120 %79 %
160Uses Schema organization   Other-0.131131 %72 %
161Variations making whole A Tags   Relevancy-0.13101222 %83 %
162LSI Words in H3 Tags   Relevancy-0.131062141 %91 %
163Has FavIcon   Technology-0.131169 %74 %
164Inline JavaScript Kilobytes   Size-0.1352415074 %71 %
165Number of Email Addresses   Trust-0.1377438 %82 %
166Is Article Page   Other-0.131137 %72 %
167Has Meta Twitter Card   Authority-0.131148 %66 %
168Exact Matches in Sentences   Relevancy-0.1348319 %88 %
169Variations in Meta Twitter Description   Relevancy-0.1320122 %73 %
170Uses JSON-LD Organization   Other-0.131128 %77 %
171Exact Matches in Top 30KB   Relevancy-0.1323115 %82 %
172Uses JSON-LD Product   Other-0.131111 %54 %
173Uses Schema listitem   Other-0.131138 %69 %
174Number of Twitter Accounts   Authority-0.132119 %78 %
175Variations in I Tags   Relevancy-0.13394418 %83 %
176Uses JSON-LD MedicalWebPage   Other-0.12113 %13 %
177Uses Schema medicalwebpage   Other-0.12113 %13 %
178Uses Schema description   Other-0.121145 %69 %
179Exact Matches in Title Tag   Relevancy-0.122115 %85 %
180Uses Schema breadcrumblist   Other-0.121138 %69 %
181Percentage of NoFollow Links   Authority-0.1215220 %78 %
182Uses Schema sku   Other-0.12118 %34 %
183Is Store Page   Other-0.121143 %68 %
184Uses Schema gtin   Other-0.12113 %11 %
185Variations in TITLE Attributes   Relevancy-0.12563832 %83 %
186Uses JSON-LD gtin   Other-0.12113 %11 %
187Uses JSON-LD sku   Other-0.12117 %35 %
188Number Of Claimed Brands   Other-0.1220221 %77 %
189Has Email   Trust-0.121137 %73 %
190Is OpenGraph Type Article   Technology-0.121127 %67 %
191Is Pagination Page   Other-0.121117 %68 %
192Is Purchase Page   Other-0.121145 %62 %
193Has Meta Robots   Other-0.121122 %74 %
194Variations in Article Tags   Relevancy-0.1213381320 %82 %
195Uses Schema image   Other-0.121120 %70 %
196Has Google Verify   Technology-0.121119 %73 %
197Has Entities in H4 Tags   Relevancy-0.121116 %79 %
198Variations in Button Tags   Relevancy-0.123495289 %81 %
199Number of NoFollow External Links   Authority-0.1220215 %79 %
200Has Copyright   Trust-0.121161 %66 %