Measures 151227 SEO Factors

149505 Built-In SEO Factors

140290 On-page SEO Factors

9215 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 2026-06     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-0.2486225882 %79 %
2Number of Referring Domains   Authority-0.214855017540 %87 %
3Load Time Milliseconds   Performance-0.2115487158784 %88 %
4Number of Backlinks   Authority-0.21227556943759941 %87 %
5Number of Top 50 Shared Factors Used   Diversity-0.21161294 %87 %
6Number of Top 200 Shared Factors Used   Diversity-0.21523795 %90 %
7Number of Do Follow Backlinks   Authority-0.2225040953226137 %86 %
8Number of Top 100 Shared Factors Used   Diversity-0.2382895 %90 %
9Variations in H1, H2, and H3 Tags   Relevancy-0.2192759 %81 %
10Variations in H1-H6 Tags   Relevancy-0.2231959 %82 %
11Search Result Domain is .com, .net, or .org   Other-0.2116 %75 %
12Variations in H1 and H2 Tags   Relevancy-0.19113557 %82 %
13Number of Unique Variations Used   Diversity-0.19521179 %78 %
14Number of No Follow Backlinks   Authority-0.194373255670727 %83 %
15Variations in P Tags   Relevancy-0.1985175760 %85 %
16Search Result Domain is .com   Other-0.19116 %78 %
17Clean Text Kilobytes   Size-0.192421270 %89 %
18Unabridged Word Count   Size-0.1926444178984 %87 %
19Variations in Search Result Document File Name   Relevancy-0.1910145 %82 %
20Number of P Tags   Size-0.191033569 %84 %
21Entities in H2 Tags-0.1850648 %89 %
22Word Count   Size-0.1819186136784 %86 %
23Number of Images   Size-0.181362470 %85 %
24Entities in Sentences   Relevancy-0.1847712764 %90 %
25Number of Heading Tags   Size-0.181171971 %83 %
26Number of H2 Tags   Size-0.1821764 %83 %
27Number of Distinct Entities Used   Diversity-0.18802874 %90 %
28Number of Includes   Technology-0.18522578 %76 %
29Number of H1 Tags   Size-0.184166 %86 %
30Variations in Div Tags   Relevancy-0.182826023570 %86 %
31Entities in the HTML Tag   Relevancy-0.1848213170 %90 %
32LSI Words in Sentences   Relevancy-0.18251464364 %91 %
33Variations in LI Tags   Relevancy-0.1842033059 %81 %
34Number of Factors Used   Diversity-0.1851918795 %85 %
35Number of Images with ALT Text   Size-0.181221765 %89 %
36Variations in H2 Tags   Relevancy-0.1898444 %81 %
37Has Meta Charset   Technology-0.171171 %81 %
38Variations in H1 Tags   Relevancy-0.1715151 %81 %
39Number of Facebook Pages   Authority-0.1714252 %86 %
40Number of DoFollow External Links   Authority-0.17561273 %86 %
41Variations in Search Result URL Path   Relevancy-0.1713147 %81 %
42Number of HTML Tags   Size-0.172214896584 %86 %
43Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %79 %
44Number of External Links   Authority-0.17601373 %88 %
45Leading Variations in H1-H6 Tags   Relevancy-0.1712244 %80 %
46Variations in Body Tags   Relevancy-0.179473181276 %82 %
47Entities in H1 Tags-0.1713249 %89 %
48Number of DoFollow Links   Authority-0.1757812579 %89 %
49Entities in H3 Tags-0.1753639 %89 %
50Number of Links   Authority-0.1758512879 %87 %
51Variations in A Tags   Relevancy-0.1745523959 %82 %
52Has JSON-LD Schema Markup   Relevancy-0.171151 %79 %
53Variation Count in Top 30KB   Relevancy-0.1752445565 %83 %
54Number of HTTPS Links   Authority-0.1758512778 %89 %
55Variations in HTML Tags   Relevancy-0.169473179475 %84 %
56LSI Words in H2 Tags   Relevancy-0.161041853 %89 %
57Entities in Title Tag   Relevancy-0.167364 %89 %
58Number of Internal Links   Authority-0.1657311677 %89 %
59Has Entities in H2 Tags   Relevancy-0.161149 %85 %
60Variations in A Tag HREF Attributes   Relevancy-0.1617404954 %84 %
61Average Words Per Sentence   Size-0.161682775 %85 %
62Variations in Distinct A Tag HREF Attributes   Relevancy-0.1612223155 %85 %
63Variations in Search Result URL   Relevancy-0.1622255 %77 %
64Term Frequency   Relevancy-0.166375 %80 %
65Number of LinkedIn Pages   Authority-0.167128 %86 %
66Has Entities in H1 Tags   Relevancy-0.161151 %86 %
67Number of H3 Tags   Size-0.1638854 %82 %
68Variations in Search Result Link Text   Relevancy-0.1611279 %75 %
69Variations in Sentences   Relevancy-0.1642296069 %84 %
70Variations in Search Result Display URL   Relevancy-0.1511279 %78 %
71Number of Images without ALT Text   Size-0.1546851 %84 %
72Number of CSS Includes   Technology-0.1524971 %76 %
73Number of HTML Comments   Size-0.157324968 %84 %
74Variations in Absolute URLs   Relevancy-0.1571338959 %86 %
75Flesch Kincaid Reading Grade Level   Other-0.156290 %87 %
76Variations in Span Tags   Relevancy-0.157991245 %85 %
77Variations in Main Tags   Relevancy-0.151392310236 %82 %
78Number of Instagram Pages   Authority-0.1519240 %84 %
79Search Result Number of Dirs in Path   Other-0.153276 %80 %
80Variations in ALT Attributes   Relevancy-0.15158740 %80 %
81Variations in Nav Tags   Relevancy-0.1572385543 %79 %
82LSI Words in H1 Tags   Relevancy-0.1529454 %89 %
83Variations in the Canonical URL   Relevancy-0.1562249 %81 %
84Number of Forms   Technology-0.1518245 %76 %
85Variations in H3 Tags   Relevancy-0.1592332 %79 %
86Number of Sentences   Size-0.1579314282 %77 %
87Variations in the Title Tag   Relevancy-0.1518264 %77 %
88Variations in First 100 Words   Relevancy-0.15184865 %83 %
89Leading Variations in H1 Tags   Relevancy-0.151127 %78 %
90Number Of JSON-LD Types   Relevancy-0.15761354 %83 %
91Number of Questions In Headings   Size-0.158237 %84 %
92Variations in OpenGraph Title   Relevancy-0.1416256 %72 %
93Number of Social Pages   Authority-0.1433459 %88 %
94Has Form   Technology-0.141145 %73 %
95Percentage of DoFollow External Links   Authority-0.14321272 %81 %
96LSI Words in H3 Tags   Relevancy-0.14951844 %86 %
97Variations in Section Tags   Relevancy-0.1415222435 %84 %
98Number of Facebook Accounts   Authority-0.142124 %82 %
99Clean Keyword Density in the HTML Tag   Relevancy-0.14194668 %69 %
100Number of Social Accounts   Authority-0.145237 %84 %
101Headings Has Question   Other-0.141137 %79 %
102Number of US Phone Numbers   Trust-0.1411541434 %80 %
103Search Result Host Length   Size-0.14251784 %72 %
104Percentage of DoFollow Links   Authority-0.141008379 %80 %
105Number of Questions In H2 Tags   Size-0.143124 %78 %
106TF/IDF   Relevancy-0.142157 %78 %
107Has Entities in H3 Tags   Relevancy-0.141140 %84 %
108Search Result Domain Length   Size-0.14251784 %75 %
109Exact Matches in the HTML Tag   Relevancy-0.142641327 %82 %
110Variations in Meta Description   Relevancy-0.1445254 %78 %
111Uses JSON-LD name   Other-0.131151 %76 %
112Variation Density in Top 30KB   Relevancy-0.13320562 %75 %
113Number of JavaScript Includes   Technology-0.13471779 %77 %
114Search Result Uses HTTPS   Other-0.131184 %75 %
115Search Result Summary Length   Size-0.1316015195 %74 %
116Leading Variations in Title Tag   Relevancy-0.131132 %75 %
117Entities in Meta Description Tag   Relevancy-0.138353 %84 %
118Variations in Footer Tags   Relevancy-0.1351282735 %81 %
119Has Meta Viewport   Technology-0.131181 %71 %
120Has Apple Touch Icon   Technology-0.131148 %75 %
121Is Article Page   Other-0.131142 %74 %
122Has US Phone Number   Trust-0.131135 %75 %
123Is Home Page   Other-0.131115 %52 %
124Inline CSS Kilobytes   Size-0.132246165 %82 %
125Number of Absolute URLs   Authority-0.13228226083 %68 %
126Variations making whole H1-H6 Tags   Relevancy-0.132116 %74 %
127Has Meta Robots   Other-0.131124 %74 %
128Number of Twitter Accounts   Authority-0.131118 %77 %
129Leading Variations in H2 Tags   Relevancy-0.1310122 %82 %
130Variations in Script Tags   Relevancy-0.133417721663 %76 %
131Number of Questions   Size-0.131011568 %68 %
132Percentage of DoFollow Internal Links   Authority-0.13917377 %74 %
133Variations in OpenGraph Description   Relevancy-0.1342250 %78 %
134Variations Making Whole LI Tags   Relevancy-0.136123 %75 %
135Number of H4 Tags   Size-0.1346332 %76 %
136Exact Matches in H1-H6 Tags   Relevancy-0.139118 %81 %
137Exact Matches in Top 30KB   Relevancy-0.1318218 %80 %
138Uses JSON-LD url   Other-0.131146 %74 %
139Variations making whole A Tags   Relevancy-0.136127 %74 %
140Variations in Strong Tags   Relevancy-0.12233325 %79 %
141Uses Schema datemodified   Other-0.121131 %63 %
142Uses JSON-LD description   Other-0.121141 %73 %
143Number of Email Addresses   Trust-0.1241442 %80 %
144Uses JSON-LD dateModified   Other-0.121130 %68 %
145Number Of Claimed Brands   Other-0.1235223 %78 %
146Variations making whole H1, H2, and H3 Tags   Relevancy-0.122114 %74 %
147Uses JSON-LD datePublished   Other-0.121132 %69 %
148Variations in Article Tags   Relevancy-0.1217601824 %76 %
149Variations Making Whole Span Tags   Relevancy-0.129119 %81 %
150Number of HREF Lang Tags   Size-0.1224211 %79 %
151Has Contact Page   Trust-0.121160 %64 %
152Entities in H4 Tags-0.1210217 %85 %
153Title Tag Has Entities   Relevancy-0.121164 %77 %
154Page Size Kilobytes   Size-0.12109631983 %64 %
155Has FavIcon   Technology-0.121175 %68 %
156Uses Schema organization   Other-0.121133 %67 %
157LSI Words in Meta Description Tag   Relevancy-0.12281055 %84 %
158Uses Schema webpage   Other-0.121132 %65 %
159LSI Words in Title Tag   Relevancy-0.1215567 %84 %
160Has HREF Lang   Technology-0.121113 %75 %
161Uses JSON-LD ListItem   Other-0.121133 %72 %
162Uses Schema website   Other-0.121133 %64 %
163Uses JSON-LD Organization   Other-0.121130 %74 %
164Has Privacy Policy   Trust-0.121156 %67 %
165Uses JSON-LD representativeOfPage   Other-0.12111 %11 %
166Number of Prices   Size-0.125699467 %78 %
167Uses JSON-LD WebPage   Other-0.121129 %69 %
168Uses JSON-LD BreadcrumbList   Other-0.121134 %72 %
169Variations in I Tags   Relevancy-0.12215419 %78 %
170Variations in the last 100 words   Relevancy-0.12187549 %75 %
171Leading Variations in H3 Tags   Relevancy-0.128116 %77 %
172Word Count in Meta Description   Size-0.12792066 %67 %
173Uses Schema inlanguage   Other-0.121129 %63 %
174Has Email   Trust-0.121142 %74 %
175Uses JSON-LD ImageObject   Other-0.121130 %71 %
176Number of Nofollow Links   Authority-0.1220321 %78 %
177Variations in ID Attributes   Relevancy-0.11688415 %80 %
178Has Canonical URL   Authority-0.111171 %69 %
179Number of Questions In H3 Tags   Size-0.115117 %79 %
180Variations in Button Tags   Relevancy-0.111065611 %78 %
181Uses Schema representativeofpage   Other-0.11111 %11 %
182Uses JSON-LD mainEntity   Other-0.11111 %16 %
183Has Meta Description   Relevancy-0.111166 %63 %
184Number of Meta Generator Tags   Technology-0.112132 %72 %
185Uses JSON-LD inLanguage   Other-0.111128 %69 %
186Uses JSON-LD WebSite   Other-0.111131 %71 %
187Variations in H4-H6 Tags   Relevancy-0.1156216 %76 %
188Meta Description Length   Size-0.1147012366 %71 %
189Is OpenGraph Type Article   Technology-0.111131 %66 %
190Number of YouTube Accounts   Technology-0.11217 %76 %
191Has Google Verify   Technology-0.111118 %67 %
192Variations in Class Attributes   Relevancy-0.1196873520 %78 %
193Has OpenGraph Type   Relevancy-0.111162 %66 %
194Number of NoFollow External Links   Authority-0.1119214 %80 %
195Uses Schema name   Other-0.111160 %59 %
196Is Category Page   Other-0.111113 %67 %
197Has Schema Markup   Relevancy-0.111163 %61 %
198LSI Words in H4 Tags   Relevancy-0.1149624 %80 %
199Exact Matches in Title Tag   Relevancy-0.112117 %79 %
200Title Word Count   Size-0.1123883 %67 %