Measures 150708 SEO Factors

148986 Built-In SEO Factors

139784 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 2026-06     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-0.26118 %75 %
2Number of Unique LSI Words Used   Diversity-0.2544125180 %78 %
3Load Time Milliseconds   Performance-0.245013188983 %94 %
4Search Result Domain is .com   Other-0.23117 %78 %
5Number of No Follow Backlinks   Authority-0.235418108936 %81 %
6Number of Referring Domains   Authority-0.235908545 %94 %
7Number of Backlinks   Authority-0.2228156495946 %94 %
8Number of P Tags   Size-0.22703967 %88 %
9Clean Text Kilobytes   Size-0.22201267 %84 %
10Number of Top 200 Shared Factors Used   Diversity-0.22483595 %84 %
11Number of H2 Tags   Size-0.2112763 %94 %
12Number of Heading Tags   Size-0.21362368 %81 %
13Unabridged Word Count   Size-0.212698183983 %84 %
14Number of Do Follow Backlinks   Authority-0.2127203346741 %91 %
15Number of Images   Size-0.21823370 %91 %
16Word Count   Size-0.212236143583 %84 %
17Number of Top 100 Shared Factors Used   Diversity-0.21362695 %88 %
18Average Words Per Sentence   Size-0.21683574 %88 %
19Number of Unique Variations Used   Diversity-0.212672 %75 %
20Variations in Body Tags   Relevancy-0.2112231069 %72 %
21Number of Images without ALT Text   Size-0.2441253 %88 %
22Number of H3 Tags   Size-0.1917953 %84 %
23Number of Forms   Technology-0.1913340 %81 %
24Number of Top 50 Shared Factors Used   Diversity-0.19151195 %88 %
25Number of HTML Tags   Size-0.192125106683 %88 %
26Number of H1 Tags   Size-0.193165 %91 %
27Variations in Div Tags   Relevancy-0.1943411961 %78 %
28Variations in Main Tags   Relevancy-0.192186534 %72 %
29Number of Images with ALT Text   Size-0.19612265 %91 %
30Number of Includes   Technology-0.19522776 %81 %
31Number of US Phone Numbers   Trust-0.1823729 %75 %
32Has Form   Technology-0.181139 %72 %
33Number of External Links   Authority-0.18291470 %88 %
34Variations in P Tags   Relevancy-0.18652852 %81 %
35Variations in HTML Tags   Relevancy-0.18112228964 %78 %
36Variations in H1, H2, and H3 Tags   Relevancy-0.1819853 %78 %
37LSI Words in H2 Tags   Relevancy-0.18552249 %100 %
38Number of DoFollow External Links   Authority-0.18281269 %88 %
39Term Frequency   Relevancy-0.184364 %72 %
40Variations in H1 and H2 Tags   Relevancy-0.187450 %78 %
41LSI Words in Sentences   Relevancy-0.18158767958 %94 %
42Uses JSON-LD logo   Other-0.18119 %53 %
43Number of Factors Used   Diversity-0.1822216595 %84 %
44Variations in LI Tags   Relevancy-0.17551951 %78 %
45Uses Schema logo   Other-0.171112 %56 %
46Number of CSS Includes   Technology-0.1713969 %75 %
47Number of HTTPS Links   Authority-0.1723112075 %94 %
48Number of Social Accounts   Authority-0.173239 %88 %
49Variations in H1-H6 Tags   Relevancy-0.1720954 %84 %
50Number of DoFollow Links   Authority-0.1723111876 %94 %
51Number of Internal Links   Authority-0.1722410874 %94 %
52Number of Links   Authority-0.1723112076 %94 %
53Has Meta Charset   Technology-0.171168 %84 %
54Number Of JSON-LD Types   Relevancy-0.17261149 %88 %
55Variations in ALT Attributes   Relevancy-0.1737838 %78 %
56Leading Variations in H1 Tags   Relevancy-0.171128 %72 %
57Number of Facebook Pages   Authority-0.163253 %88 %
58Has JSON-LD Schema Markup   Relevancy-0.161148 %88 %
59LSI Words in H3 Tags   Relevancy-0.16792840 %91 %
60Variations in H1 Tags   Relevancy-0.162145 %75 %
61Variations in Search Result Document File Name   Relevancy-0.163136 %78 %
62Number of Questions In Headings   Size-0.166343 %84 %
63Uses JSON-LD operatingSystem   Other-0.161124 %13 %
64Uses Schema operatingsystem   Other-0.161124 %13 %
65Number of Distinct Entities Used   Diversity-0.16472267 %88 %
66Variations making whole A Tags   Relevancy-0.162125 %69 %
67Variations in Nav Tags   Relevancy-0.16771936 %78 %
68Is Home Page   Other-0.161116 %50 %
69Number of HREF Lang Tags   Size-0.1616417 %78 %
70Is Article Page   Other-0.161138 %63 %
71Leading Variations in H1, H2, and H3 Tags   Relevancy-0.169240 %72 %
72Entities in H2 Tags-0.1617643 %97 %
73Has HREF Lang   Technology-0.161117 %78 %
74Variations in Meta Description   Relevancy-0.163248 %78 %
75Number of Instagram Pages   Authority-0.165243 %84 %
76Entities in the HTML Tag   Relevancy-0.1529311760 %91 %
77Variation Count in Top 30KB   Relevancy-0.15641956 %91 %
78Variations in Sentences   Relevancy-0.153255360 %72 %
79Number of Sentences   Size-0.1562118380 %75 %
80Entities in Sentences   Relevancy-0.1529211156 %91 %
81Search Result Summary Length   Size-0.1515715193 %78 %
82Number of HTML Comments   Size-0.151985764 %84 %
83Number of JavaScript Includes   Technology-0.15421977 %78 %
84Number of Facebook Accounts   Authority-0.152124 %88 %
85Exact Matches in the HTML Tag   Relevancy-0.15601234 %84 %
86Uses Schema applicationcategory   Other-0.151126 %13 %
87Uses JSON-LD Organization   Other-0.151131 %81 %
88Has US Phone Number   Trust-0.151132 %72 %
89Variations in H2 Tags   Relevancy-0.156341 %81 %
90Leading Variations in H1-H6 Tags   Relevancy-0.159241 %75 %
91Variations in Search Result URL Path   Relevancy-0.153135 %72 %
92Percentage of DoFollow Links   Authority-0.15958075 %81 %
93Number of Absolute URLs   Authority-0.1546127179 %66 %
94Number of Questions   Size-0.15582068 %72 %
95Entities in H3 Tags-0.1553937 %88 %
96Uses JSON-LD name   Other-0.151146 %84 %
97Variations in Absolute URLs   Relevancy-0.142255749 %81 %
98Variations in H3 Tags   Relevancy-0.1412434 %75 %
99Percentage of DoFollow Internal Links   Authority-0.14836974 %72 %
100Uses JSON-LD item   Other-0.141120 %66 %
101Uses Schema organization   Other-0.141132 %84 %
102Variations in A Tag HREF Attributes   Relevancy-0.141804245 %81 %
103Uses JSON-LD BreadcrumbList   Other-0.141124 %69 %
104Variations in Section Tags   Relevancy-0.14471328 %78 %
105Variations in Span Tags   Relevancy-0.1424942 %91 %
106Uses JSON-LD ListItem   Other-0.141124 %72 %
107Uses Schema collectionpage   Other-0.14116 %28 %
108Entities in Title Tag   Relevancy-0.145254 %91 %
109Number of Prices   Size-0.1434912566 %66 %
110Variations in Button Tags   Relevancy-0.146213 %78 %
111Variations in Distinct A Tag HREF Attributes   Relevancy-0.141072645 %81 %
112Uses Schema availablelanguage   Other-0.14112 %16 %
113Has Entities in H1 Tags   Relevancy-0.141144 %78 %
114Uses JSON-LD availableLanguage   Other-0.14112 %19 %
115Is Category Page   Other-0.141116 %63 %
116Flesch Kincaid Reading Grade Level   Other-0.144188 %81 %
117Exact Matches in H1-H6 Tags   Relevancy-0.147230 %78 %
118Uses JSON-LD NewsMediaOrganization   Other-0.14112 %13 %
119Uses Microdata description   Other-0.14117 %28 %
120Headings Has Question   Other-0.141142 %78 %
121Variations in A Tags   Relevancy-0.14682151 %91 %
122Has Entities in H2 Tags   Relevancy-0.141144 %91 %
123LSI Words in H1 Tags   Relevancy-0.147447 %88 %
124Uses Schema webpage   Other-0.141128 %56 %
125Variations in Search Result Display URL   Relevancy-0.142273 %78 %
126Variations in Search Result Link Text   Relevancy-0.142273 %78 %
127Percentage of DoFollow External Links   Authority-0.14181167 %88 %
128Search Result URL Length   Size-0.14856795 %50 %
129Number of NoFollow External Links   Authority-0.144214 %75 %
130Uses JSON-LD isPartOf   Other-0.14112 %13 %
131Uses Schema ispartof   Other-0.14112 %13 %
132Uses JSON-LD url   Other-0.141142 %78 %
133Variations in Script Tags   Relevancy-0.1479712552 %81 %
134Number of Questions In H2 Tags   Size-0.143126 %88 %
135Uses JSON-LD SoftwareApplication   Other-0.141120 %13 %
136Uses Schema softwareapplication   Other-0.141120 %13 %
137Word Count in Meta Description   Size-0.13382066 %66 %
138Uses JSON-LD CollectionPage   Other-0.13115 %31 %
139Number of LinkedIn Pages   Authority-0.132128 %84 %
140Uses Microdata LocalBusiness   Other-0.13112 %22 %
141Variations Making Whole LI Tags   Relevancy-0.132121 %84 %
142Variations in OpenGraph Description   Relevancy-0.132144 %72 %
143Exact Matches in Top 30KB   Relevancy-0.136224 %84 %
144Number Of Claimed Brands   Other-0.134223 %78 %
145Uses Schema postaladdress   Other-0.131115 %50 %
146Uses JSON-LD lastReviewed   Other-0.13113 %16 %
147Uses Microdata about   Other-0.13113 %13 %
148Uses Schema addresslocality   Other-0.131115 %50 %
149Uses Schema lastreviewed   Other-0.13113 %16 %
150Has Canonical URL   Authority-0.131166 %69 %
151Uses JSON-LD dateCreated   Other-0.13111 %25 %
152Variations Making Whole Span Tags   Relevancy-0.132117 %91 %
153Uses Microdata logo   Other-0.13113 %50 %
154Meta Description Length   Size-0.1320912166 %63 %
155Uses JSON-LD text   Other-0.131112 %66 %
156Number of Social Pages   Authority-0.1310561 %88 %
157Uses JSON-LD Product   Other-0.13115 %41 %
158Uses Microdata potentialAction   Other-0.13111 %13 %
159Uses Microdata SearchAction   Other-0.13111 %13 %
160Inline CSS Kilobytes   Size-0.131747163 %84 %
161Uses Schema datecreated   Other-0.13111 %25 %
162Uses JSON-LD ItemList   Other-0.13115 %34 %
163Variations making whole H1 Tags   Relevancy-0.131111 %75 %
164Uses Schema image   Other-0.131119 %72 %
165Variations making whole H1-H6 Tags   Relevancy-0.131117 %78 %
166Is Pagination Page   Other-0.131121 %81 %
167Uses JSON-LD applicationCategory   Other-0.131121 %13 %
168Variations in First 100 Words   Relevancy-0.1313554 %75 %
169Variations making whole H1, H2, and H3 Tags   Relevancy-0.131116 %81 %
170Uses Schema telephone   Other-0.131117 %50 %
171Entities in H1 Tags-0.134244 %81 %
172Exact Matches in Title Tag   Relevancy-0.131127 %81 %
173Search Result Number of Dirs in Path   Other-0.133272 %72 %
174Uses JSON-LD contactOption   Other-0.13113 %25 %
175Percentage of NoFollow External Links   Authority-0.133112 %69 %
176Uses JSON-LD Question   Other-0.131110 %72 %
177Uses JSON-LD sameAs   Other-0.13112 %38 %
178Uses Schema localbusiness   Other-0.131114 %31 %
179Uses JSON-LD description   Other-0.131136 %75 %
180LSI Words in Meta Description Tag   Relevancy-0.1319951 %91 %
181Uses Schema item   Other-0.131128 %31 %
182Has Entities in H3 Tags   Relevancy-0.121137 %81 %
183Has Meta Viewport   Technology-0.121178 %69 %
184Variations in ID Attributes   Relevancy-0.127212 %78 %
185Uses JSON-LD FAQPage   Other-0.121110 %72 %
186Uses Schema streetaddress   Other-0.121112 %50 %
187Number of Questions In H3 Tags   Size-0.124221 %81 %
188Number of H4 Tags   Size-0.129431 %75 %
189Uses JSON-LD publishingPrinciples   Other-0.12114 %25 %
190Exact Matches in H2 Tags   Relevancy-0.124118 %78 %
191Variations in Search Result URL   Relevancy-0.123144 %69 %
192Uses Schema itemlist   Other-0.12114 %44 %
193Uses JSON-LD license   Other-0.12112 %13 %
194Uses Microdata NewsArticle   Other-0.12111 %13 %
195Uses Schema license   Other-0.12112 %13 %
196Uses Schema newsmediaorganization   Other-0.12112 %13 %
197Uses Schema entrypoint   Other-0.121113 %56 %
198Uses Schema urltemplate   Other-0.121113 %56 %
199Title Tag Has Entities   Relevancy-0.121151 %78 %
200Has Contact Page   Trust-0.121152 %69 %