Measures 150483 SEO Factors

148761 Built-In SEO Factors

139559 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 %81 %
2Load Time Milliseconds   Performance-0.2314022154081 %94 %
3Number of Unique LSI Words Used   Diversity-0.2389729379 %79 %
4Number of Unique Variations Used   Diversity-0.2232672 %90 %
5Number of Top 50 Shared Factors Used   Diversity-0.22161194 %94 %
6Number of Top 200 Shared Factors Used   Diversity-0.22503596 %95 %
7Search Result Domain is .com   Other-0.22116 %81 %
8Number of Top 100 Shared Factors Used   Diversity-0.22382796 %95 %
9Variations in H1-H6 Tags   Relevancy-0.2212753 %90 %
10Variations in H1 and H2 Tags   Relevancy-0.2103451 %90 %
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-0.2123426108369 %91 %
14Entities in Title Tag   Relevancy-0.27358 %93 %
15Variations in HTML Tags   Relevancy-0.2123426106568 %93 %
16Number of Factors Used   Diversity-0.227116496 %93 %
17Variations in Div Tags   Relevancy-0.25727437764 %93 %
18Variations in P Tags   Relevancy-0.1926373955 %93 %
19Term Frequency   Relevancy-0.196368 %91 %
20Entities in Sentences   Relevancy-0.1981812959 %96 %
21Entities in the HTML Tag   Relevancy-0.19198513464 %96 %
22Entities in H2 Tags-0.1927644 %94 %
23Variations in H1 Tags   Relevancy-0.1913145 %86 %
24Entities in H1 Tags-0.187246 %91 %
25Variations in LI Tags   Relevancy-0.1831943354 %90 %
26Variations in Search Result Display URL   Relevancy-0.1816273 %83 %
27Variations in Search Result Link Text   Relevancy-0.1816273 %83 %
28Word Count   Size-0.186860137881 %92 %
29Leading Variations in H1-H6 Tags   Relevancy-0.1820236 %88 %
30Variations in Sentences   Relevancy-0.1852136661 %92 %
31Unabridged Word Count   Size-0.189481188481 %91 %
32Variation Count in Top 30KB   Relevancy-0.1844125156 %88 %
33Number of HTML Tags   Size-0.18763899480 %88 %
34Variations in the Title Tag   Relevancy-0.1814256 %88 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1817234 %89 %
36Variations in Search Result Document File Name   Relevancy-0.189137 %87 %
37Variations in A Tags   Relevancy-0.1859704953 %90 %
38Clean Text Kilobytes   Size-0.18591367 %90 %
39Variations in Meta Description   Relevancy-0.1834247 %84 %
40Number of Includes   Technology-0.17492675 %82 %
41LSI Words in Sentences   Relevancy-0.17332871060 %95 %
42Number of Heading Tags   Size-0.17531967 %89 %
43Number of P Tags   Size-0.171023566 %90 %
44Number of Images with ALT Text   Size-0.171202063 %88 %
45Variations in Search Result URL Path   Relevancy-0.1710139 %88 %
46Number of H1 Tags   Size-0.175162 %91 %
47Number of HTTPS Links   Authority-0.1760013173 %89 %
48LSI Words in Title Tag   Relevancy-0.1727664 %93 %
49Number of Images   Size-0.171252768 %89 %
50Number of Links   Authority-0.1760113273 %89 %
51Number of DoFollow Links   Authority-0.1759212973 %89 %
52Variations in H2 Tags   Relevancy-0.1799337 %90 %
53Number of H2 Tags   Size-0.1716760 %91 %
54Number of Internal Links   Authority-0.1759511972 %88 %
55Number of Facebook Pages   Authority-0.176250 %86 %
56Variations in the Canonical URL   Relevancy-0.1759240 %88 %
57Variations in ALT Attributes   Relevancy-0.1712941338 %84 %
58Entities in H3 Tags-0.1728636 %95 %
59Variations in Main Tags   Relevancy-0.172745820933 %88 %
60Clean Keyword Density in the HTML Tag   Relevancy-0.17177560 %84 %
61TF/IDF   Relevancy-0.171147 %88 %
62Variations in Span Tags   Relevancy-0.1614821542 %91 %
63LSI Words in H1 Tags   Relevancy-0.1615451 %94 %
64Has Entities in H1 Tags   Relevancy-0.161146 %88 %
65Search Result Number of Dirs in Path   Other-0.163272 %79 %
66Variations in OpenGraph Title   Relevancy-0.1612147 %83 %
67Entities in Meta Description Tag   Relevancy-0.168351 %90 %
68Variations in OpenGraph Description   Relevancy-0.1632241 %82 %
69Leading Variations in Title Tag   Relevancy-0.161126 %83 %
70Leading Variations in H1 Tags   Relevancy-0.162123 %84 %
71Percentage of DoFollow Internal Links   Authority-0.16946772 %86 %
72Variations in A Tag HREF Attributes   Relevancy-0.1634884547 %91 %
73Percentage of DoFollow Links   Authority-0.161007873 %90 %
74Number of CSS Includes   Technology-0.1622968 %82 %
75Variations in Script Tags   Relevancy-0.165826843055 %88 %
76Variations in Search Result URL   Relevancy-0.1619247 %84 %
77Variations in Absolute URLs   Relevancy-0.161033611650 %92 %
78Variation Density in Top 30KB   Relevancy-0.16279452 %84 %
79Variations in Distinct A Tag HREF Attributes   Relevancy-0.1621332948 %91 %
80Average Words Per Sentence   Size-0.161593271 %86 %
81Number of Forms   Technology-0.1612247 %80 %
82Has JSON-LD Schema Markup   Relevancy-0.161148 %84 %
83Number of H3 Tags   Size-0.1628852 %85 %
84Variations in First 100 Words   Relevancy-0.16178655 %89 %
85Number of HTML Comments   Size-0.164094963 %88 %
86Number of Referring Domains   Authority-0.16701912144 %76 %
87Has Entities in H2 Tags   Relevancy-0.161145 %90 %
88Flesch Kincaid Reading Grade Level   Other-0.166193 %89 %
89Search Result Domain Length   Size-0.15251681 %84 %
90Search Result Host Length   Size-0.15251681 %84 %
91Number of Backlinks   Authority-0.1519454221383444 %78 %
92Number Of JSON-LD Types   Relevancy-0.152291850 %88 %
93Number of Sentences   Size-0.1566013377 %86 %
94Variations in Nav Tags   Relevancy-0.15107564237 %87 %
95Search Result Uses HTTPS   Other-0.151180 %84 %
96LSI Words in H2 Tags   Relevancy-0.15962049 %95 %
97Variations in Section Tags   Relevancy-0.1516112131 %89 %
98Number of Images without ALT Text   Size-0.1571851 %88 %
99Number of DoFollow External Links   Authority-0.15561268 %88 %
100Exact Matches in the HTML Tag   Relevancy-0.154321125 %87 %
101Number of External Links   Authority-0.15591469 %89 %
102Number of Do Follow Backlinks   Authority-0.151945374925040 %77 %
103Has Meta Charset   Technology-0.151168 %83 %
104Has Form   Technology-0.151146 %77 %
105Has Canonical URL   Authority-0.151166 %82 %
106Number of JavaScript Includes   Technology-0.15401876 %79 %
107Number of Absolute URLs   Authority-0.15106326078 %81 %
108Number of Questions In Headings   Size-0.1510231 %83 %
109LSI Words in Meta Description Tag   Relevancy-0.15551052 %92 %
110Number of US Phone Numbers   Trust-0.153451138 %85 %
111Has Privacy Policy   Trust-0.141153 %79 %
112Has US Phone Number   Trust-0.141139 %77 %
113Inline CSS Kilobytes   Size-0.142075662 %84 %
114Title Tag Has Entities   Relevancy-0.141158 %89 %
115Variations in H3 Tags   Relevancy-0.14119328 %86 %
116Title Word Count   Size-0.1440878 %79 %
117Uses JSON-LD name   Other-0.141148 %82 %
118Word Count in Meta Description   Size-0.14821962 %80 %
119Meta Description Length   Size-0.1454611663 %80 %
120Title Length   Size-0.142365178 %79 %
121Has Meta Viewport   Technology-0.141177 %83 %
122Page Size Kilobytes   Size-0.14103733679 %72 %
123Number of Facebook Accounts   Authority-0.143124 %81 %
124Number of No Follow Backlinks   Authority-0.141851383524033 %71 %
125Has Meta Description   Relevancy-0.141162 %80 %
126Uses Schema name   Other-0.141156 %74 %
127Number of Social Accounts   Authority-0.147237 %85 %
128Has Schema Markup   Relevancy-0.141159 %79 %
129Leading Variations in H2 Tags   Relevancy-0.147117 %86 %
130Variations in Footer Tags   Relevancy-0.1438282229 %85 %
131Variations making whole H1-H6 Tags   Relevancy-0.142111 %81 %
132Percentage of DoFollow External Links   Authority-0.14241167 %84 %
133Number of LinkedIn Pages   Authority-0.143126 %83 %
134Has Entities in H3 Tags   Relevancy-0.141136 %87 %
135Number of H4 Tags   Size-0.1427330 %81 %
136Number of Questions   Size-0.14671161 %79 %
137Number of Social Pages   Authority-0.1420457 %81 %
138Has Contact Page   Trust-0.131156 %76 %
139Headings Has Question   Other-0.131130 %81 %
140Number of Instagram Pages   Authority-0.1317240 %77 %
141Uses JSON-LD url   Other-0.131141 %82 %
142Variations Making Whole LI Tags   Relevancy-0.134118 %82 %
143Exact Matches in H1-H6 Tags   Relevancy-0.1313117 %85 %
144LSI Words in H3 Tags   Relevancy-0.131062142 %91 %
145Variations making whole H1, H2, and H3 Tags   Relevancy-0.132110 %81 %
146Meta Description Tag Has Entities   Relevancy-0.131150 %83 %
147Number of Prices   Size-0.135199665 %80 %
148Uses Schema url   Other-0.131151 %73 %
149Variations in Strong Tags   Relevancy-0.13110221 %82 %
150Has OpenGraph Type   Relevancy-0.131157 %74 %
151Uses JSON-LD description   Other-0.131138 %77 %
152Entities in H4 Tags-0.1314216 %89 %
153Has Meta Twitter Card   Authority-0.131149 %65 %
154Uses JSON-LD ListItem   Other-0.131131 %76 %
155Has FavIcon   Technology-0.131169 %73 %
156Number of Questions In H2 Tags   Size-0.136120 %79 %
157Uses JSON-LD BreadcrumbList   Other-0.131130 %76 %
158Has OpenGraph Image   Relevancy-0.131152 %72 %
159Number of Nofollow Links   Authority-0.1322322 %81 %
160Has Terms of Service   Trust-0.131137 %73 %
161Variations making whole A Tags   Relevancy-0.13101221 %83 %
162Number of Email Addresses   Trust-0.1377438 %82 %
163Uses Schema product   Other-0.131111 %52 %
164Is Article Page   Other-0.131138 %71 %
165Variations Making Whole Span Tags   Relevancy-0.139115 %87 %
166Inline JavaScript Kilobytes   Size-0.1352415175 %71 %
167Uses Schema organization   Other-0.121131 %73 %
168Number of Twitter Accounts   Authority-0.122119 %78 %
169Variations in Meta Twitter Description   Relevancy-0.1220121 %73 %
170Exact Matches in Sentences   Relevancy-0.1248318 %89 %
171Exact Matches in Top 30KB   Relevancy-0.1219115 %82 %
172Uses Schema listitem   Other-0.121138 %69 %
173Uses JSON-LD Product   Other-0.121110 %53 %
174Uses Schema description   Other-0.121145 %69 %
175Uses JSON-LD Organization   Other-0.121128 %76 %
176Number Of Claimed Brands   Other-0.1220221 %76 %
177Variations in I Tags   Relevancy-0.12394418 %83 %
178Exact Matches in Title Tag   Relevancy-0.122115 %86 %
179Uses Schema breadcrumblist   Other-0.121138 %69 %
180Percentage of NoFollow Links   Authority-0.1215220 %76 %
181Has Email   Trust-0.121137 %73 %
182Is OpenGraph Type Article   Technology-0.121128 %66 %
183Variations in TITLE Attributes   Relevancy-0.12563831 %83 %
184Has Meta Robots   Other-0.121122 %74 %
185Is Store Page   Other-0.121143 %67 %
186Is Pagination Page   Other-0.121117 %68 %
187Has Google Verify   Technology-0.121119 %73 %
188Search Result Summary Length   Size-0.1216315396 %70 %
189Variations in Article Tags   Relevancy-0.1213381320 %82 %
190Uses Schema sku   Other-0.12117 %32 %
191Uses JSON-LD sku   Other-0.12116 %33 %
192Number of HREF Lang Tags   Size-0.1257311 %76 %
193Has Copyright   Trust-0.121161 %65 %
194Number of Questions In H3 Tags   Size-0.127115 %75 %
195Uses JSON-LD ImageObject   Other-0.121127 %70 %
196Search Result URL Length   Size-0.12986496 %62 %
197Is Purchase Page   Other-0.121145 %61 %
198Variations in Meta Twitter Content   Relevancy-0.125123 %72 %
199Variations in Button Tags   Relevancy-0.123495318 %81 %
200Uses Schema image   Other-0.121120 %70 %