Measures 151282 SEO Factors

149560 Built-In SEO Factors

140343 On-page SEO Factors

9217 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 2026-07     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-0.2569919576 %75 %
2Entities in Title Tag   Relevancy-0.226355 %95 %
3Number of Unique Variations Used   Diversity-0.22591069 %84 %
4Number of Includes   Technology-0.22602569 %83 %
5Number of Top 100 Shared Factors Used   Diversity-0.21372693 %93 %
6Number of CSS Includes   Technology-0.2118862 %77 %
7Has JSON-LD Schema Markup   Relevancy-0.211141 %80 %
8Load Time Milliseconds   Performance-0.2110597197079 %91 %
9Number of Top 200 Shared Factors Used   Diversity-0.21493593 %93 %
10Number of Facebook Pages   Authority-0.214241 %89 %
11Number of Top 50 Shared Factors Used   Diversity-0.21161193 %92 %
12Number of Distinct Entities Used   Diversity-0.2552668 %95 %
13Entities in the HTML Tag   Relevancy-0.269012563 %95 %
14Variations in H1-H6 Tags   Relevancy-0.2131848 %83 %
15Number of Factors Used   Diversity-0.225715793 %89 %
16Entities in Sentences   Relevancy-0.267412059 %95 %
17Variations in H1, H2, and H3 Tags   Relevancy-0.2121747 %85 %
18Number of Referring Domains   Authority-0.195973232 %91 %
19Number of Backlinks   Authority-0.1928284136532 %92 %
20Variations in H1 and H2 Tags   Relevancy-0.1963445 %83 %
21Variations in P Tags   Relevancy-0.1940147848 %90 %
22Number of Do Follow Backlinks   Authority-0.1928107115329 %89 %
23Number of P Tags   Size-0.191733163 %89 %
24Entities in H1 Tags-0.194242 %93 %
25Entities in H2 Tags-0.1928537 %91 %
26Number of Heading Tags   Size-0.19501765 %81 %
27Variations in Sentences   Relevancy-0.1921536456 %91 %
28Variations in Search Result Document File Name   Relevancy-0.197138 %87 %
29Flesch Kincaid Reading Grade Level   Other-0.196186 %88 %
30Variations in Body Tags   Relevancy-0.1869948141567 %88 %
31Word Count   Size-0.185219118277 %87 %
32Search Result Number of Dirs in Path   Other-0.183270 %74 %
33Clean Keyword Density in the HTML Tag   Relevancy-0.18181758 %79 %
34Variations in LI Tags   Relevancy-0.185532850 %85 %
35Variations in Div Tags   Relevancy-0.182576648858 %89 %
36Variation Count in Top 30KB   Relevancy-0.1844157055 %79 %
37Leading Variations in H1, H2, and H3 Tags   Relevancy-0.185231 %83 %
38Unabridged Word Count   Size-0.1821043183077 %86 %
39Number of H2 Tags   Size-0.1813654 %79 %
40Variations in H2 Tags   Relevancy-0.1855432 %78 %
41Variations in HTML Tags   Relevancy-0.1869948137765 %91 %
42Clean Text Kilobytes   Size-0.181101263 %84 %
43Entities in Meta Description Tag   Relevancy-0.1812344 %89 %
44Has Meta Charset   Technology-0.181165 %74 %
45Term Frequency   Relevancy-0.186365 %89 %
46Leading Variations in H1-H6 Tags   Relevancy-0.185234 %84 %
47Variations in H1 Tags   Relevancy-0.1811139 %81 %
48Variations in OpenGraph Description   Relevancy-0.1829239 %79 %
49Variations in Search Result Display URL   Relevancy-0.1814268 %81 %
50Variations in Search Result Link Text   Relevancy-0.1814268 %81 %
51Number of No Follow Backlinks   Authority-0.182191022520 %88 %
52Number of Images   Size-0.181652464 %81 %
53LSI Words in Sentences   Relevancy-0.18248145656 %93 %
54Number of Instagram Pages   Authority-0.1811231 %80 %
55Variations in OpenGraph Title   Relevancy-0.189143 %77 %
56Variations in A Tags   Relevancy-0.1727146150 %80 %
57Number of LinkedIn Pages   Authority-0.173123 %82 %
58Variations in Search Result URL Path   Relevancy-0.178240 %87 %
59Number of H1 Tags   Size-0.172159 %83 %
60Number of HTML Tags   Size-0.17347088579 %85 %
61Search Result Domain is .com   Other-0.17118 %85 %
62Search Result Domain is .com, .net, or .org   Other-0.17119 %86 %
63Variations in Meta Description   Relevancy-0.1729243 %79 %
64Number of Images with ALT Text   Size-0.17551558 %82 %
65Entities in H3 Tags-0.1737731 %97 %
66Percentage of DoFollow Links   Authority-0.17997770 %84 %
67Number of Social Pages   Authority-0.1714450 %84 %
68Title Tag Has Entities   Relevancy-0.171156 %86 %
69Variations in the Title Tag   Relevancy-0.1711252 %83 %
70LSI Words in Title Tag   Relevancy-0.1710458 %93 %
71Has Entities in H1 Tags   Relevancy-0.171142 %85 %
72Variations in Script Tags   Relevancy-0.172198645754 %85 %
73Number of Sentences   Size-0.1764411975 %86 %
74Number of Links   Authority-0.1733411370 %83 %
75Number of HTML Comments   Size-0.172444662 %83 %
76Number of HTTPS Links   Authority-0.1733211270 %83 %
77Variations in Absolute URLs   Relevancy-0.17439912750 %85 %
78Number Of JSON-LD Types   Relevancy-0.17701145 %83 %
79Number of DoFollow Links   Authority-0.1733211070 %84 %
80Number of Internal Links   Authority-0.1730710069 %84 %
81Search Result Uses HTTPS   Other-0.161175 %75 %
82Variations in First 100 Words   Relevancy-0.16172856 %82 %
83Page Size Kilobytes   Size-0.1685430076 %73 %
84Number of External Links   Authority-0.161351364 %86 %
85Variation Density in Top 30KB   Relevancy-0.16283653 %77 %
86Variations in Distinct A Tag HREF Attributes   Relevancy-0.169093447 %85 %
87Number of Facebook Accounts   Authority-0.162119 %81 %
88Number of JavaScript Includes   Technology-0.16431771 %80 %
89Average Words Per Sentence   Size-0.161573268 %81 %
90Has Meta Viewport   Technology-0.161173 %81 %
91Number of Images without ALT Text   Size-0.16113948 %81 %
92Number of Absolute URLs   Authority-0.16122122476 %75 %
93Number of DoFollow External Links   Authority-0.161341262 %87 %
94Inline CSS Kilobytes   Size-0.161335358 %84 %
95Has Canonical URL   Authority-0.161162 %72 %
96Uses JSON-LD name   Other-0.161143 %78 %
97Variations in Search Result Summary   Relevancy-0.1648370 %82 %
98Variations in Footer Tags   Relevancy-0.1624973232 %77 %
99Variations in H3 Tags   Relevancy-0.1658425 %83 %
100Has FavIcon   Technology-0.161164 %70 %
101Variations in Search Result URL   Relevancy-0.1623249 %80 %
102Variations in A Tag HREF Attributes   Relevancy-0.1612775246 %85 %
103Search Result Domain Length   Size-0.16211678 %78 %
104Search Result Host Length   Size-0.16211678 %78 %
105Variations in ALT Attributes   Relevancy-0.16170935 %77 %
106Has Entities in H2 Tags   Relevancy-0.161139 %86 %
107Percentage of DoFollow Internal Links   Authority-0.16886669 %81 %
108LSI Words in H1 Tags   Relevancy-0.168344 %89 %
109Variations in the Canonical URL   Relevancy-0.1637242 %86 %
110Number of H3 Tags   Size-0.1637746 %89 %
111Is Article Page   Other-0.151132 %70 %
112Number of Questions   Size-0.1539951 %77 %
113Variations in Span Tags   Relevancy-0.155071638 %85 %
114Number of Questions In Headings   Size-0.156224 %82 %
115Number of Twitter Accounts   Authority-0.152114 %81 %
116Uses JSON-LD datePublished   Other-0.151124 %76 %
117Uses JSON-LD description   Other-0.151133 %73 %
118Leading Variations in H1 Tags   Relevancy-0.151119 %78 %
119LSI Words in H2 Tags   Relevancy-0.15411242 %89 %
120Variations in Section Tags   Relevancy-0.155522328 %90 %
121Leading Variations in Title Tag   Relevancy-0.151124 %78 %
122Has US Phone Number   Trust-0.151136 %74 %
123Uses Schema organization   Other-0.151127 %69 %
124Number of US Phone Numbers   Trust-0.152121037 %81 %
125Variations in Nav Tags   Relevancy-0.1533877037 %84 %
126Has Meta Description   Relevancy-0.151155 %68 %
127Headings Has Question   Other-0.151124 %78 %
128Uses Schema datemodified   Other-0.151122 %71 %
129LSI Words in Meta Description Tag   Relevancy-0.1520745 %91 %
130Number of Forms   Technology-0.159243 %74 %
131Number of Social Accounts   Authority-0.154130 %87 %
132Uses JSON-LD url   Other-0.151138 %79 %
133Variations in Main Tags   Relevancy-0.151021418029 %87 %
134Uses JSON-LD dateModified   Other-0.151122 %74 %
135Has Apple Touch Icon   Technology-0.151138 %73 %
136Percentage of DoFollow External Links   Authority-0.15251161 %81 %
137Uses JSON-LD ImageObject   Other-0.151124 %75 %
138Uses JSON-LD Organization   Other-0.151125 %72 %
139TF/IDF   Relevancy-0.151146 %82 %
140Uses Schema datepublished   Other-0.151128 %66 %
141Variations in the last 100 words   Relevancy-0.14177544 %75 %
142Has Contact Page   Trust-0.141153 %72 %
143Uses Schema imageobject   Other-0.141128 %65 %
144Word Count in Meta Description   Size-0.14281755 %80 %
145Search Result Summary Length   Size-0.1416115091 %74 %
146Uses JSON-LD WebPage   Other-0.141123 %75 %
147Variations making whole A Tags   Relevancy-0.145122 %80 %
148Inline JavaScript Kilobytes   Size-0.1456113171 %78 %
149Uses Schema name   Other-0.141149 %74 %
150Uses Schema webpage   Other-0.141124 %73 %
151Title Length   Size-0.141064974 %79 %
152Uses Schema url   Other-0.141144 %73 %
153Meta Description Length   Size-0.1417310655 %81 %
154Uses Schema website   Other-0.141127 %64 %
155Is OpenGraph Type Article   Technology-0.141122 %70 %
156Number of Questions In H2 Tags   Size-0.144115 %79 %
157Has Privacy Policy   Trust-0.141146 %75 %
158LSI Words in H3 Tags   Relevancy-0.14651535 %92 %
159Has Entities in H3 Tags   Relevancy-0.141131 %89 %
160Has Form   Technology-0.141143 %74 %
161Uses Schema headline   Other-0.141114 %70 %
162Number of H4 Tags   Size-0.147329 %79 %
163Leading Variations in H2 Tags   Relevancy-0.142117 %79 %
164Has OpenGraph Type   Relevancy-0.141152 %75 %
165Is Home Page   Other-0.141114 %48 %
166Uses JSON-LD headline   Other-0.141113 %72 %
167Variations Making Whole LI Tags   Relevancy-0.145120 %75 %
168Meta Description Tag Has Entities   Relevancy-0.141144 %80 %
169Uses JSON-LD ListItem   Other-0.141127 %75 %
170Uses Schema inlanguage   Other-0.141123 %68 %
171Uses JSON-LD inLanguage   Other-0.141123 %71 %
172Uses JSON-LD BreadcrumbList   Other-0.141126 %75 %
173Variations Making Whole Span Tags   Relevancy-0.143114 %75 %
174Uses Schema description   Other-0.141138 %65 %
175Uses Schema item   Other-0.141125 %62 %
176Variations in Strong Tags   Relevancy-0.1432218 %83 %
177Uses JSON-LD WebSite   Other-0.141125 %67 %
178Number of Prices   Size-0.1488711359 %74 %
179Has Copyright   Trust-0.141153 %65 %
180Number of Email Addresses   Trust-0.1412437 %83 %
181Variations in Article Tags   Relevancy-0.143951418 %81 %
182Variations in TITLE Attributes   Relevancy-0.13135629 %81 %
183Uses Schema listitem   Other-0.131132 %66 %
184Uses Schema breadcrumblist   Other-0.131132 %65 %
185Has Schema Markup   Relevancy-0.131154 %73 %
186Title Word Count   Size-0.1316874 %79 %
187Has OpenGraph Image   Relevancy-0.131146 %75 %
188Number Of Claimed Brands   Other-0.1323217 %75 %
189Leading Variations in H3 Tags   Relevancy-0.134112 %77 %
190Has Meta Twitter Card   Authority-0.131146 %76 %
191Number of Meta Generator Tags   Technology-0.132127 %71 %
192Uses JSON-LD item   Other-0.131120 %73 %
193Number of HREF Lang Tags   Size-0.1315210 %77 %
194Uses JSON-LD MerchantReturnPolicy   Other-0.13113 %11 %
195Uses JSON-LD caption   Other-0.131116 %68 %
196Uses JSON-LD ReadAction   Other-0.131114 %69 %
197Is Store Page   Other-0.131142 %62 %
198Uses JSON-LD SearchAction   Other-0.131118 %70 %
199Uses JSON-LD EntryPoint   Other-0.131115 %71 %
200Uses JSON-LD urlTemplate   Other-0.131114 %70 %