Measures 150485 SEO Factors

148763 Built-In SEO Factors

139561 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-0.2389729379 %78 %
2Search Result Domain is .com, .net, or .org   Other-0.23116 %81 %
3Load Time Milliseconds   Performance-0.2314022152681 %94 %
4Number of Unique Variations Used   Diversity-0.2332672 %91 %
5Number of Top 50 Shared Factors Used   Diversity-0.23161194 %94 %
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 %81 %
9Variations in H1 and H2 Tags   Relevancy-0.21103451 %91 %
10Variations in H1-H6 Tags   Relevancy-0.21212753 %91 %
11Variations in H1, H2, and H3 Tags   Relevancy-0.2192653 %91 %
12Number of Distinct Entities Used   Diversity-0.2602670 %94 %
13Variations in Body Tags   Relevancy-0.2123426104469 %91 %
14Entities in Title Tag   Relevancy-0.27358 %93 %
15Variations in HTML Tags   Relevancy-0.2123426102868 %93 %
16Variations in Div Tags   Relevancy-0.25727436664 %93 %
17Number of Factors Used   Diversity-0.227116396 %93 %
18Variations in P Tags   Relevancy-0.226373955 %93 %
19Entities in Sentences   Relevancy-0.1981813060 %96 %
20Entities in the HTML Tag   Relevancy-0.19198513564 %97 %
21Term Frequency   Relevancy-0.196368 %91 %
22Entities in H2 Tags-0.1927744 %94 %
23Variations in H1 Tags   Relevancy-0.1913145 %87 %
24Entities in H1 Tags-0.197246 %92 %
25Variations in LI Tags   Relevancy-0.1931943254 %90 %
26Variations in Search Result Display URL   Relevancy-0.1916273 %83 %
27Variations in Search Result Link Text   Relevancy-0.1916273 %83 %
28Variations in Search Result Document File Name   Relevancy-0.199137 %87 %
29Leading Variations in H1-H6 Tags   Relevancy-0.1920236 %89 %
30Variations in Sentences   Relevancy-0.1952136561 %92 %
31Word Count   Size-0.196860137580 %92 %
32Number of HTML Tags   Size-0.197638100380 %88 %
33Variations in the Title Tag   Relevancy-0.1814256 %88 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817234 %90 %
35Unabridged Word Count   Size-0.189481188280 %92 %
36Variation Count in Top 30KB   Relevancy-0.1844125056 %88 %
37Variations in A Tags   Relevancy-0.1859704853 %90 %
38Clean Text Kilobytes   Size-0.18591366 %90 %
39Variations in Search Result URL Path   Relevancy-0.1810139 %88 %
40Number of Heading Tags   Size-0.18531967 %89 %
41Variations in Meta Description   Relevancy-0.1834247 %84 %
42Number of P Tags   Size-0.181023566 %90 %
43Number of Images with ALT Text   Size-0.181202062 %88 %
44Number of Includes   Technology-0.18492675 %82 %
45Number of H1 Tags   Size-0.185162 %91 %
46Number of HTTPS Links   Authority-0.1760013273 %89 %
47LSI Words in Sentences   Relevancy-0.17332870759 %95 %
48Number of Links   Authority-0.1760113373 %89 %
49Number of DoFollow Links   Authority-0.1759213073 %89 %
50Number of Images   Size-0.171252768 %89 %
51Variations in H2 Tags   Relevancy-0.1799337 %90 %
52Variations in the Canonical URL   Relevancy-0.1759241 %88 %
53Number of H2 Tags   Size-0.1716760 %92 %
54Number of Internal Links   Authority-0.1759512072 %89 %
55Variations in ALT Attributes   Relevancy-0.1712941339 %85 %
56Entities in H3 Tags-0.1728736 %95 %
57Number of Facebook Pages   Authority-0.176250 %86 %
58TF/IDF   Relevancy-0.171147 %88 %
59Variations in Main Tags   Relevancy-0.172745820333 %88 %
60LSI Words in Title Tag   Relevancy-0.1727663 %93 %
61Clean Keyword Density in the HTML Tag   Relevancy-0.17177460 %84 %
62Has Entities in H1 Tags   Relevancy-0.171146 %88 %
63Variations in Span Tags   Relevancy-0.1714821542 %91 %
64Entities in Meta Description Tag   Relevancy-0.178351 %90 %
65Variations in A Tag HREF Attributes   Relevancy-0.1734884548 %91 %
66Variations in OpenGraph Title   Relevancy-0.1712147 %83 %
67Leading Variations in Title Tag   Relevancy-0.171126 %83 %
68Search Result Number of Dirs in Path   Other-0.173272 %78 %
69Leading Variations in H1 Tags   Relevancy-0.172123 %85 %
70Variations in Search Result URL   Relevancy-0.1719248 %85 %
71Variations in OpenGraph Description   Relevancy-0.1732241 %82 %
72Variations in Absolute URLs   Relevancy-0.171033611450 %92 %
73LSI Words in H1 Tags   Relevancy-0.1615450 %94 %
74Number of Forms   Technology-0.1612247 %80 %
75Variations in Distinct A Tag HREF Attributes   Relevancy-0.1621332948 %91 %
76Percentage of DoFollow Links   Authority-0.161007773 %90 %
77Percentage of DoFollow Internal Links   Authority-0.16946772 %86 %
78Variations in Script Tags   Relevancy-0.165826841556 %88 %
79Variation Density in Top 30KB   Relevancy-0.16279452 %84 %
80Number of CSS Includes   Technology-0.1622968 %83 %
81Average Words Per Sentence   Size-0.161593271 %87 %
82Has Entities in H2 Tags   Relevancy-0.161144 %90 %
83Has JSON-LD Schema Markup   Relevancy-0.161147 %84 %
84Variations in First 100 Words   Relevancy-0.16178655 %89 %
85Number of HTML Comments   Size-0.164094963 %88 %
86Number of H3 Tags   Size-0.1628852 %86 %
87Number Of JSON-LD Types   Relevancy-0.162291850 %88 %
88Flesch Kincaid Reading Grade Level   Other-0.166193 %89 %
89Number of Referring Domains   Authority-0.16701912044 %77 %
90Search Result Domain Length   Size-0.16251680 %84 %
91Search Result Host Length   Size-0.16251680 %84 %
92Number of DoFollow External Links   Authority-0.16561268 %88 %
93Variations in Nav Tags   Relevancy-0.16107564137 %87 %
94Number of External Links   Authority-0.16591469 %90 %
95Number of Sentences   Size-0.1666013276 %86 %
96Number of Backlinks   Authority-0.1519454221340044 %78 %
97Number of Images without ALT Text   Size-0.1571851 %88 %
98Variations in Section Tags   Relevancy-0.1516112131 %89 %
99Search Result Uses HTTPS   Other-0.151180 %84 %
100LSI Words in H2 Tags   Relevancy-0.15962049 %95 %
101Exact Matches in the HTML Tag   Relevancy-0.154321125 %87 %
102Has Form   Technology-0.151146 %78 %
103Has Meta Charset   Technology-0.151168 %83 %
104Has Canonical URL   Authority-0.151165 %82 %
105Number of Do Follow Backlinks   Authority-0.151945374896340 %77 %
106Number of JavaScript Includes   Technology-0.15401876 %80 %
107Number of Absolute URLs   Authority-0.15106326178 %82 %
108Number of Questions In Headings   Size-0.1510231 %83 %
109Number of US Phone Numbers   Trust-0.153451137 %85 %
110Inline CSS Kilobytes   Size-0.152075562 %84 %
111Has Privacy Policy   Trust-0.151153 %79 %
112Has US Phone Number   Trust-0.151138 %77 %
113Title Tag Has Entities   Relevancy-0.151159 %89 %
114Variations in H3 Tags   Relevancy-0.15119328 %86 %
115LSI Words in Meta Description Tag   Relevancy-0.15551051 %92 %
116Uses JSON-LD name   Other-0.151148 %82 %
117Title Word Count   Size-0.1440878 %79 %
118Page Size Kilobytes   Size-0.14103733978 %73 %
119Uses Schema name   Other-0.141156 %74 %
120Has Meta Viewport   Technology-0.141177 %83 %
121Word Count in Meta Description   Size-0.14821962 %81 %
122Meta Description Length   Size-0.1454611662 %81 %
123Title Length   Size-0.142365178 %80 %
124Leading Variations in H2 Tags   Relevancy-0.147117 %87 %
125Number of Facebook Accounts   Authority-0.143124 %81 %
126Number of No Follow Backlinks   Authority-0.141851383505433 %71 %
127Has Schema Markup   Relevancy-0.141159 %79 %
128Has Entities in H3 Tags   Relevancy-0.141136 %87 %
129Number of Social Accounts   Authority-0.147236 %85 %
130Has Meta Description   Relevancy-0.141161 %80 %
131Number of H4 Tags   Size-0.1427330 %82 %
132Percentage of DoFollow External Links   Authority-0.14241167 %84 %
133Variations in Footer Tags   Relevancy-0.1438282129 %86 %
134Has Contact Page   Trust-0.141156 %76 %
135Variations making whole H1-H6 Tags   Relevancy-0.142112 %81 %
136Number of LinkedIn Pages   Authority-0.143126 %84 %
137Number of Questions   Size-0.14671161 %80 %
138Number of Social Pages   Authority-0.1420456 %81 %
139Uses JSON-LD url   Other-0.141141 %82 %
140Headings Has Question   Other-0.141130 %80 %
141Variations Making Whole LI Tags   Relevancy-0.144118 %82 %
142Uses Schema url   Other-0.131151 %73 %
143Meta Description Tag Has Entities   Relevancy-0.131150 %83 %
144Exact Matches in H1-H6 Tags   Relevancy-0.1313117 %85 %
145Number of Instagram Pages   Authority-0.1317240 %78 %
146Number of Prices   Size-0.135199765 %81 %
147Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %81 %
148LSI Words in H3 Tags   Relevancy-0.131062142 %91 %
149Uses JSON-LD ListItem   Other-0.131130 %77 %
150Variations in Strong Tags   Relevancy-0.13110221 %82 %
151Uses JSON-LD description   Other-0.131138 %77 %
152Entities in H4 Tags-0.1314216 %89 %
153Number of Nofollow Links   Authority-0.1322322 %81 %
154Has Terms of Service   Trust-0.131138 %74 %
155Has OpenGraph Type   Relevancy-0.131157 %74 %
156Uses JSON-LD BreadcrumbList   Other-0.131130 %76 %
157Has OpenGraph Image   Relevancy-0.131152 %73 %
158Uses Schema product   Other-0.131112 %53 %
159Has FavIcon   Technology-0.131169 %73 %
160Number of Questions In H2 Tags   Size-0.136120 %79 %
161Has Meta Twitter Card   Authority-0.131148 %66 %
162Variations making whole A Tags   Relevancy-0.13101221 %83 %
163Variations Making Whole Span Tags   Relevancy-0.139115 %87 %
164Uses Schema organization   Other-0.131131 %73 %
165Inline JavaScript Kilobytes   Size-0.1352415274 %71 %
166Number of Email Addresses   Trust-0.1377437 %82 %
167Is Article Page   Other-0.131137 %72 %
168Uses Schema listitem   Other-0.131138 %69 %
169Uses JSON-LD Product   Other-0.131110 %54 %
170Variations in Meta Twitter Description   Relevancy-0.1320121 %74 %
171Uses JSON-LD Organization   Other-0.131128 %76 %
172Exact Matches in Sentences   Relevancy-0.1348318 %88 %
173Number of Twitter Accounts   Authority-0.132119 %78 %
174Uses Schema description   Other-0.121144 %69 %
175Exact Matches in Top 30KB   Relevancy-0.1219114 %83 %
176Uses Schema breadcrumblist   Other-0.121138 %69 %
177Variations in I Tags   Relevancy-0.12394418 %83 %
178Percentage of NoFollow Links   Authority-0.1215220 %77 %
179Uses Schema medicalwebpage   Other-0.12113 %12 %
180Exact Matches in Title Tag   Relevancy-0.122114 %85 %
181Number Of Claimed Brands   Other-0.1220221 %76 %
182Uses Schema sku   Other-0.12118 %33 %
183Variations in TITLE Attributes   Relevancy-0.12563832 %83 %
184Has Email   Trust-0.121137 %73 %
185Is Store Page   Other-0.121143 %68 %
186Uses JSON-LD MedicalWebPage   Other-0.12113 %12 %
187Is OpenGraph Type Article   Technology-0.121127 %66 %
188Uses JSON-LD sku   Other-0.12117 %34 %
189Has Google Verify   Technology-0.121119 %73 %
190Has Meta Robots   Other-0.121122 %74 %
191Is Pagination Page   Other-0.121117 %68 %
192Is Purchase Page   Other-0.121145 %62 %
193Variations in Article Tags   Relevancy-0.1213381320 %82 %
194Uses Schema image   Other-0.121120 %71 %
195Variations in Meta Twitter Content   Relevancy-0.125123 %72 %
196Has Copyright   Trust-0.121161 %66 %
197Search Result Summary Length   Size-0.1216315396 %71 %
198Search Result URL Length   Size-0.12986497 %62 %
199Number of Questions In H3 Tags   Size-0.127115 %76 %
200Variations in Button Tags   Relevancy-0.123495309 %81 %