Measures 153996 SEO Factors

152274 Built-In SEO Factors

143054 On-page SEO Factors

9220 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 2026-08     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-0.32106334373 %79 %
2Variations in Search Result Document File Name   Relevancy-0.283246 %94 %
3Number of No Follow Backlinks   Authority-0.271909963321 %85 %
4Number of Referring Domains   Authority-0.272552933 %91 %
5Number of Images   Size-0.26542361 %94 %
6Number of Top 200 Shared Factors Used   Diversity-0.26494085 %96 %
7Number of Heading Tags   Size-0.26391963 %98 %
8Has Meta Charset   Technology-0.261161 %96 %
9Number of Top 50 Shared Factors Used   Diversity-0.26151284 %96 %
10Number of H1 Tags   Size-0.262157 %98 %
11Variations in Search Result URL Path   Relevancy-0.264247 %91 %
12Entities in Sentences   Relevancy-0.2657215865 %98 %
13Number of Backlinks   Authority-0.2633485161133 %91 %
14Clean Text Kilobytes   Size-0.25441161 %98 %
15Number of Images with ALT Text   Size-0.25421657 %96 %
16Number of Top 100 Shared Factors Used   Diversity-0.25373085 %96 %
17Number of P Tags   Size-0.25923861 %100 %
18Variations in P Tags   Relevancy-0.25505813854 %98 %
19Entities in H2 Tags-0.25321049 %98 %
20Has Entities in H2 Tags   Relevancy-0.251150 %98 %
21Word Count   Size-0.253552133275 %96 %
22Variations in Search Result URL   Relevancy-0.254255 %85 %
23Variations in H1-H6 Tags   Relevancy-0.251701256 %91 %
24Has Entities in H1 Tags   Relevancy-0.241152 %98 %
25Variations in H1 and H2 Tags   Relevancy-0.2471754 %94 %
26Entities in the HTML Tag   Relevancy-0.2457716372 %98 %
27Number of Do Follow Backlinks   Authority-0.2414387102229 %91 %
28Variations in H1, H2, and H3 Tags   Relevancy-0.241431155 %91 %
29Variations in H1 Tags   Relevancy-0.243147 %83 %
30Entities in H1 Tags-0.245249 %91 %
31Number of Unique Variations Used   Diversity-0.24301371 %70 %
32Unabridged Word Count   Size-0.234278166375 %100 %
33Average Words Per Sentence   Size-0.231033265 %91 %
34Number of External Links   Authority-0.23301266 %98 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.236243 %83 %
36Number of H2 Tags   Size-0.2314756 %100 %
37Number of HTML Comments   Size-0.231304059 %85 %
38Is Home Page   Other-0.231113 %47 %
39Load Time Milliseconds   Performance-0.238681173276 %81 %
40Variations in LI Tags   Relevancy-0.238574155 %91 %
41Variation Count in Top 30KB   Relevancy-0.23497313958 %85 %
42Number of DoFollow External Links   Authority-0.23301166 %98 %
43Search Result URL Length   Size-0.22846281 %57 %
44LSI Words in Sentences   Relevancy-0.22285870952 %100 %
45Search Result Number of Dirs in Path   Other-0.223267 %79 %
46Number Of JSON-LD Types   Relevancy-0.22541449 %89 %
47Search Result Domain is .com, .net, or .org   Other-0.22115 %79 %
48Number of Distinct Entities Used   Diversity-0.22583275 %91 %
49Entities in H3 Tags-0.2231837 %94 %
50Leading Variations in H1-H6 Tags   Relevancy-0.228243 %91 %
51Number of H3 Tags   Size-0.2217847 %87 %
52Variations in the Canonical URL   Relevancy-0.224247 %89 %
53Number of Factors Used   Diversity-0.2228819885 %89 %
54Variations in ALT Attributes   Relevancy-0.2218640 %87 %
55Variations in Div Tags   Relevancy-0.222071653463 %96 %
56Search Result Domain is .com   Other-0.21114 %79 %
57Number of HTTPS Links   Authority-0.2133112170 %96 %
58Variations in A Tags   Relevancy-0.2126798155 %89 %
59Variations in A Tag HREF Attributes   Relevancy-0.212244553 %91 %
60Number of Links   Authority-0.2133112170 %96 %
61Has US Phone Number   Trust-0.211128 %89 %
62Variations in Nav Tags   Relevancy-0.21585715540 %87 %
63Number of Internal Links   Authority-0.2132011069 %91 %
64Has JSON-LD Schema Markup   Relevancy-0.211148 %87 %
65Variations in H2 Tags   Relevancy-0.263543 %94 %
66Variations in Distinct A Tag HREF Attributes   Relevancy-0.21352853 %91 %
67Number of DoFollow Links   Authority-0.233111870 %98 %
68Uses JSON-LD url   Other-0.21143 %85 %
69Variations in Span Tags   Relevancy-0.25012143 %91 %
70Variations in Main Tags   Relevancy-0.21896233 %85 %
71Has Privacy Policy   Trust-0.21149 %77 %
72Number of HTML Tags   Size-0.2169892775 %91 %
73Uses JSON-LD name   Other-0.21148 %85 %
74Variations in Absolute URLs   Relevancy-0.23726357 %89 %
75LSI Words in H1 Tags   Relevancy-0.213441 %91 %
76Uses Schema website   Other-0.21133 %79 %
77Number of Images without ALT Text   Size-0.221745 %94 %
78Has Entities in H3 Tags   Relevancy-0.191139 %89 %
79Variations in Search Result Display URL   Relevancy-0.193274 %64 %
80Variations in Search Result Link Text   Relevancy-0.193274 %64 %
81Uses JSON-LD description   Other-0.191138 %89 %
82Flesch Kincaid Reading Grade Level   Other-0.196282 %85 %
83Uses JSON-LD ListItem   Other-0.191134 %85 %
84Meta Description Tag Has Entities   Relevancy-0.191161 %55 %
85Number of LinkedIn Pages   Authority-0.192123 %91 %
86Search Result Summary Length   Size-0.1915314582 %79 %
87Number of US Phone Numbers   Trust-0.1945727 %91 %
88Percentage of DoFollow External Links   Authority-0.19201265 %89 %
89Percentage of DoFollow Internal Links   Authority-0.19867773 %55 %
90Number of Social Accounts   Authority-0.193129 %87 %
91Uses JSON-LD BreadcrumbList   Other-0.191132 %85 %
92LSI Words in H2 Tags   Relevancy-0.19842142 %100 %
93Entities in Title Tag   Relevancy-0.198469 %79 %
94Variations in Footer Tags   Relevancy-0.1928937235 %89 %
95Percentage of DoFollow Links   Authority-0.19968572 %72 %
96Variations in Section Tags   Relevancy-0.1913354731 %98 %
97Number Of Claimed Brands   Other-0.1821222 %94 %
98Uses Schema legalservice   Other-0.181125 %13 %
99Uses Schema datemodified   Other-0.181130 %77 %
100Uses JSON-LD datePublished   Other-0.181132 %81 %
101Variations in First 100 Words   Relevancy-0.181741264 %83 %
102Variations in Body Tags   Relevancy-0.1867316176871 %87 %
103Uses Schema name   Other-0.181158 %62 %
104Number of Forms   Technology-0.187242 %94 %
105Is Article Page   Other-0.181139 %79 %
106Uses Schema url   Other-0.181152 %64 %
107Uses JSON-LD dateModified   Other-0.181130 %77 %
108Exact Matches in the HTML Tag   Relevancy-0.1858825 %87 %
109Variations in OpenGraph Title   Relevancy-0.1811259 %62 %
110Variations in Meta Description   Relevancy-0.184255 %66 %
111Number of Facebook Pages   Authority-0.183244 %89 %
112TF/IDF   Relevancy-0.181154 %83 %
113Has Form   Technology-0.181141 %89 %
114Variations in Sentences   Relevancy-0.171634662 %87 %
115Entities in Meta Description Tag   Relevancy-0.178460 %72 %
116Search Result Has Rewritten Page Title   Other-0.171140 %55 %
117Has Contact Page   Trust-0.171159 %55 %
118Variations in HTML Tags   Relevancy-0.1767316169167 %91 %
119Number of Email Addresses   Trust-0.1710440 %79 %
120Uses JSON-LD LegalService-0.171125 %13 %
121Search Result Uses HTTPS   Other-0.171177 %72 %
122Variations in OpenGraph Description   Relevancy-0.177251 %64 %
123Term Frequency   Relevancy-0.176368 %83 %
124Uses Schema breadcrumblist   Other-0.171142 %60 %
125Has Meta Robots   Other-0.171120 %79 %
126Has Apple Touch Icon   Technology-0.171142 %81 %
127Uses JSON-LD WebSite-0.171127 %81 %
128Uses Schema listitem   Other-0.171142 %60 %
129Number of Social Pages   Authority-0.178452 %94 %
130Uses Schema description   Other-0.171146 %62 %
131Number of Questions In Headings   Size-0.177231 %87 %
132Leading Variations in H2 Tags   Relevancy-0.173124 %87 %
133Number of Questions   Size-0.17311466 %55 %
134Uses Schema organization   Other-0.171130 %89 %
135LSI Words in H3 Tags   Relevancy-0.17841834 %94 %
136Variations in the Title Tag   Relevancy-0.1713262 %74 %
137Number of Sentences   Size-0.1725513974 %70 %
138Uses JSON-LD item   Other-0.161122 %81 %
139Leading Variations in H1 Tags   Relevancy-0.161129 %89 %
140Exact Matches in H1-H6 Tags   Relevancy-0.166114 %87 %
141Uses Schema datepublished   Other-0.161139 %57 %
142Exact Matches in Top 30KB   Relevancy-0.166114 %89 %
143Headings Has Question   Other-0.161131 %85 %
144Number of Meta Generator Tags   Technology-0.162133 %77 %
145Uses JSON-LD articleBody   Other-0.16115 %23 %
146Uses Schema webpage   Other-0.161130 %89 %
147Number of CSS Includes   Technology-0.16171066 %64 %
148Number of Absolute URLs   Authority-0.1650525076 %55 %
149Uses JSON-LD Organization   Other-0.161128 %87 %
150Variations in H3 Tags   Relevancy-0.1672530 %83 %
151Uses JSON-LD SearchAction   Other-0.161122 %81 %
152Has Email   Trust-0.161140 %70 %
153Uses JSON-LD email   Other-0.16118 %77 %
154Variations in Search Result Summary   Relevancy-0.1636474 %64 %
155Uses Schema headline   Other-0.161117 %68 %
156Number of Twitter Accounts   Authority-0.161115 %87 %
157Uses JSON-LD headline   Other-0.161116 %66 %
158Uses JSON-LD WebPage   Other-0.161128 %87 %
159Is OpenGraph Type Article   Technology-0.161132 %72 %
160Uses JSON-LD mainEntity   Other-0.16111 %13 %
161Number of Facebook Accounts   Authority-0.162117 %87 %
162Number of Instagram Pages   Authority-0.166234 %89 %
163Title Tag Has Entities   Relevancy-0.161171 %62 %
164Number of H4 Tags   Size-0.167327 %87 %
165Variations making whole H1-H6 Tags   Relevancy-0.161116 %89 %
166Meta Description Length   Size-0.1621413163 %62 %
167Uses Schema telephone   Other-0.151115 %81 %
168Variations in I Tags   Relevancy-0.1515420 %83 %
169Uses Schema email   Other-0.15118 %77 %
170Uses Schema searchaction   Other-0.151123 %83 %
171Has Canonical URL   Authority-0.151168 %51 %
172Entities in H4 Tags-0.159217 %96 %
173Has Meta Viewport   Technology-0.151174 %66 %
174Has Terms of Service   Trust-0.151129 %62 %
175Uses JSON-LD ImageObject   Other-0.151129 %87 %
176Uses Schema copyrightyear   Other-0.15112 %36 %
177Variations in Strong Tags   Relevancy-0.1595525 %94 %
178Variations in Script Tags   Relevancy-0.152697558 %79 %
179Uses Schema postalcode   Other-0.151115 %85 %
180Has Schema Markup   Relevancy-0.151164 %53 %
181Number of Bytes to First Match   Size-0.153815535142124882 %23 %
182Uses Schema addressregion   Other-0.151114 %81 %
183Exact Matches in Sentences   Relevancy-0.1535316 %81 %
184Page Size Kilobytes   Size-0.1549329077 %51 %
185Search Result Domain Length   Size-0.15231777 %85 %
186Search Result Host Length   Size-0.15231777 %85 %
187Has Meta Description   Relevancy-0.151161 %53 %
188Word Count in Meta Description   Size-0.15342163 %62 %
189Uses JSON-LD telePhone   Other-0.151113 %85 %
190Inline CSS Kilobytes   Size-0.15935859 %85 %
191Has OpenGraph Type   Relevancy-0.151161 %49 %
192Uses Schema inlanguage   Other-0.151129 %85 %
193Uses JSON-LD copyrightYear   Other-0.15112 %34 %
194Uses JSON-LD addressRegion   Other-0.151113 %83 %
195Variation Density in Top 30KB   Relevancy-0.152841063 %72 %
196Has Google Verify   Technology-0.151116 %83 %
197Uses Schema articlebody   Other-0.15114 %32 %
198Number of Questions In H3 Tags   Size-0.154114 %79 %
199Uses JSON-LD inLanguage   Other-0.151129 %85 %
200Uses JSON-LD image   Other-0.151113 %81 %