Measures 149573 SEO Factors

147851 Built-In SEO Factors

138676 On-page SEO Factors

9175 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 2026-02     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-0.22115 %65 %
2Search Result Domain is .com   Other-0.21115 %64 %
3Number of Top 50 Shared Factors Used   Diversity-0.21161394 %89 %
4Variations in Search Result Document File Name   Relevancy-0.213146 %79 %
5Number of Unique LSI Words Used   Diversity-0.297832482 %75 %
6Entities in Title Tag   Relevancy-0.27364 %96 %
7Number of Unique Variations Used   Diversity-0.224780 %84 %
8Load Time Milliseconds   Performance-0.197535161784 %87 %
9Variations in Search Result URL Path   Relevancy-0.194149 %80 %
10Number of Top 100 Shared Factors Used   Diversity-0.19393094 %90 %
11Variations in Search Result URL   Relevancy-0.194258 %76 %
12Number of Top 200 Shared Factors Used   Diversity-0.19513994 %91 %
13Number of Backlinks   Authority-0.18203862748447 %59 %
14Variations in P Tags   Relevancy-0.185663168 %82 %
15Number of Factors Used   Diversity-0.1827818395 %82 %
16Variations in H1 and H2 Tags   Relevancy-0.1812462 %82 %
17Number of Referring Domains   Authority-0.182865833247 %59 %
18Entities in H1 Tags-0.186252 %91 %
19Number of Distinct Entities Used   Diversity-0.18542772 %93 %
20Variations in the Canonical URL   Relevancy-0.188254 %81 %
21Variations in H1-H6 Tags   Relevancy-0.1717765 %83 %
22Variations in H1, H2, and H3 Tags   Relevancy-0.1716665 %84 %
23Number of Do Follow Backlinks   Authority-0.17339517887442 %58 %
24Variations in Div Tags   Relevancy-0.17222211074 %87 %
25Entities in the HTML Tag   Relevancy-0.1745012868 %90 %
26Entities in Sentences   Relevancy-0.1744512665 %90 %
27Variations in Search Result Display URL   Relevancy-0.173282 %84 %
28Variations in Search Result Link Text   Relevancy-0.173282 %84 %
29Variations in Distinct A Tag HREF Attributes   Relevancy-0.171122463 %85 %
30Variations in Body Tags   Relevancy-0.17436422778 %88 %
31Variations in Sentences   Relevancy-0.174313874 %84 %
32Variations in HTML Tags   Relevancy-0.17436422678 %88 %
33Variations in H1 Tags   Relevancy-0.163155 %82 %
34Entities in Meta Description Tag   Relevancy-0.168354 %89 %
35Entities in H2 Tags-0.1628750 %90 %
36Variations in A Tag HREF Attributes   Relevancy-0.161603763 %86 %
37Variations in H2 Tags   Relevancy-0.1611349 %80 %
38Variations in Meta Description   Relevancy-0.163257 %83 %
39Variations in Absolute URLs   Relevancy-0.162265765 %86 %
40Variations in First 100 Words   Relevancy-0.1618771 %80 %
41Number of No Follow Backlinks   Authority-0.162619981836 %57 %
42Variations in the Title Tag   Relevancy-0.163268 %81 %
43Variations in LI Tags   Relevancy-0.168622266 %89 %
44Clean Text Kilobytes   Size-0.16531274 %81 %
45Variations in A Tags   Relevancy-0.161432066 %85 %
46Variation Count in Top 30KB   Relevancy-0.161161967 %84 %
47Term Frequency   Relevancy-0.164378 %85 %
48Search Result Number of Dirs in Path   Other-0.163273 %77 %
49Leading Variations in H1-H6 Tags   Relevancy-0.167243 %85 %
50Variations in ALT Attributes   Relevancy-0.1683646 %78 %
51Number of Facebook Pages   Authority-0.165255 %77 %
52Word Count   Size-0.154962140984 %82 %
53Leading Variations in H1, H2, and H3 Tags   Relevancy-0.156241 %86 %
54Unabridged Word Count   Size-0.156243180683 %83 %
55Variations in Script Tags   Relevancy-0.157876665 %81 %
56Number of Images   Size-0.153603274 %83 %
57Number of P Tags   Size-0.151353972 %82 %
58Number of Images with ALT Text   Size-0.153532269 %82 %
59Entities in H3 Tags-0.1531641 %95 %
60Clean Keyword Density in the HTML Tag   Relevancy-0.159473 %74 %
61Leading Variations in H1 Tags   Relevancy-0.151125 %79 %
62Number of CSS Includes   Technology-0.15191073 %69 %
63Variation Density in Top 30KB   Relevancy-0.154263 %79 %
64TF/IDF   Relevancy-0.151162 %79 %
65Number of Heading Tags   Size-0.15572174 %77 %
66Leading Variations in Title Tag   Relevancy-0.151128 %80 %
67Number of H1 Tags   Size-0.153268 %83 %
68Number of Includes   Technology-0.15462780 %78 %
69Number of Links   Authority-0.1531412679 %78 %
70Number of DoFollow Links   Authority-0.1530212279 %79 %
71Number of HTTPS Links   Authority-0.1531412579 %78 %
72Variations in OpenGraph Description   Relevancy-0.153252 %80 %
73Variations in Span Tags   Relevancy-0.1429850 %82 %
74LSI Words in Sentences   Relevancy-0.14706568759 %90 %
75Exact Matches in the HTML Tag   Relevancy-0.143301026 %84 %
76Number of Internal Links   Authority-0.1429811278 %79 %
77Variations in Section Tags   Relevancy-0.14551738 %78 %
78LSI Words in Title Tag   Relevancy-0.1414561 %92 %
79Number Of JSON-LD Types   Relevancy-0.14501355 %80 %
80Number of HTML Tags   Size-0.14227294984 %83 %
81Percentage of DoFollow Links   Authority-0.14998480 %85 %
82Number of HTML Comments   Size-0.143984970 %86 %
83Number of Images without ALT Text   Size-0.141481056 %80 %
84Has Meta Charset   Technology-0.141172 %77 %
85LSI Words in H1 Tags   Relevancy-0.1418452 %90 %
86Search Result URL Length   Size-0.14816096 %67 %
87Number of H2 Tags   Size-0.1414766 %75 %
88Variations in OpenGraph Title   Relevancy-0.143158 %78 %
89Percentage of DoFollow Internal Links   Authority-0.14897380 %82 %
90Number of Sentences   Size-0.1445813281 %80 %
91Variations making whole A Tags   Relevancy-0.143128 %78 %
92Variations in Nav Tags   Relevancy-0.143132247 %88 %
93Has JSON-LD Schema Markup   Relevancy-0.141153 %76 %
94Variations in H3 Tags   Relevancy-0.147337 %83 %
95Number of H3 Tags   Size-0.1425859 %79 %
96Uses Microdata price   Other-0.14112 %13 %
97Variations in Footer Tags   Relevancy-0.145491039 %81 %
98Number of DoFollow External Links   Authority-0.13401274 %75 %
99Average Words Per Sentence   Size-0.131552877 %81 %
100Number of External Links   Authority-0.13411475 %76 %
101Leading Variations in H2 Tags   Relevancy-0.134121 %78 %
102Has Entities in H1 Tags   Relevancy-0.131152 %85 %
103Number of Email Addresses   Trust-0.1398441 %75 %
104Number of Questions In Headings   Size-0.137238 %77 %
105Variations in Main Tags   Relevancy-0.135105738 %83 %
106Is Home Page   Other-0.131119 %41 %
107Flesch Kincaid Reading Grade Level   Other-0.136292 %84 %
108Variations Making Whole Span Tags   Relevancy-0.1310118 %74 %
109Number of US Phone Numbers   Trust-0.138231346 %79 %
110Exact Matches in Sentences   Relevancy-0.1338217 %80 %
111Number of LinkedIn Pages   Authority-0.136132 %74 %
112Title Tag Has Entities   Relevancy-0.131163 %87 %
113Number of Facebook Accounts   Authority-0.132127 %74 %
114Exact Matches in H1-H6 Tags   Relevancy-0.137115 %81 %
115Inline CSS Kilobytes   Size-0.132456567 %82 %
116Uses Schema aggregaterating   Other-0.131111 %58 %
117Number of Forms   Technology-0.136248 %75 %
118Number of Instagram Pages   Authority-0.1319242 %69 %
119Has Contact Page   Trust-0.131161 %70 %
120Has Form   Technology-0.131148 %74 %
121Variations in Strong Tags   Relevancy-0.137228 %75 %
122Percentage of DoFollow External Links   Authority-0.13271172 %70 %
123LSI Words in Meta Description Tag   Relevancy-0.13211050 %87 %
124Has Canonical URL   Authority-0.131172 %74 %
125Has Meta Description   Relevancy-0.131167 %75 %
126Variations in TITLE Attributes   Relevancy-0.1325539 %76 %
127Number of JavaScript Includes   Technology-0.13321781 %76 %
128Exact Matches in Title Tag   Relevancy-0.131114 %74 %
129Has Meta Viewport   Technology-0.131182 %75 %
130Has US Phone Number   Trust-0.131146 %69 %
131Search Result Uses HTTPS   Other-0.131182 %75 %
132Search Result Summary Length   Size-0.1319415494 %67 %
133Uses Microdata offers   Other-0.13112 %12 %
134Uses Schema offers   Other-0.13112 %12 %
135Variations making whole H1-H6 Tags   Relevancy-0.132114 %74 %
136Number of Social Pages   Authority-0.1323560 %75 %
137Search Result Domain Length   Size-0.12241784 %75 %
138Search Result Host Length   Size-0.12241784 %75 %
139Number of Questions   Size-0.12681268 %75 %
140Uses Schema bestrating   Other-0.12118 %45 %
141Variations in the last 100 words   Relevancy-0.1211454 %77 %
142LSI Words in H2 Tags   Relevancy-0.12631949 %86 %
143Exact Matches in Top 30KB   Relevancy-0.1211115 %75 %
144Is OpenGraph Type Article   Technology-0.121135 %62 %
145Uses JSON-LD AggregateRating   Other-0.12119 %61 %
146Has Email   Trust-0.121141 %67 %
147Variations making whole H1, H2, and H3 Tags   Relevancy-0.122113 %74 %
148Meta Description Length   Size-0.1233912168 %76 %
149Uses Schema product   Other-0.12117 %49 %
150Uses Schema review   Other-0.12116 %39 %
151Is Article Page   Other-0.121145 %67 %
152Uses JSON-LD Review   Other-0.12115 %41 %
153Uses Schema operatingsystem   Other-0.12114 %12 %
154Number of Questions In H2 Tags   Size-0.124125 %76 %
155Uses Schema ratingvalue   Other-0.121111 %55 %
156Uses Schema applicationcategory   Other-0.12114 %12 %
157Number of Prices   Size-0.124226869 %79 %
158Word Count in Meta Description   Size-0.12551968 %78 %
159Uses JSON-LD name   Other-0.121155 %73 %
160Leading Variations in H3 Tags   Relevancy-0.124115 %75 %
161Headings Has Question   Other-0.121138 %70 %
162Number of Absolute URLs   Authority-0.1257927582 %80 %
163Uses JSON-LD url   Other-0.121146 %70 %
164Uses JSON-LD image   Other-0.121117 %66 %
165Uses JSON-LD description   Other-0.121143 %69 %
166Number of Social Accounts   Authority-0.125242 %77 %
167Has HREF Lang   Technology-0.121111 %63 %
168Variations Making Whole LI Tags   Relevancy-0.123124 %76 %
169Number of H4 Tags   Size-0.1216435 %75 %
170Uses Schema worstrating   Other-0.12115 %43 %
171Variations in I Tags   Relevancy-0.1212425 %74 %
172Variations in Style Tags   Relevancy-0.12514712 %78 %
173Has OpenGraph Type   Relevancy-0.121162 %71 %
174Has FavIcon   Technology-0.121176 %72 %
175Uses Schema url   Other-0.121156 %65 %
176Number of Meta Generator Tags   Technology-0.122139 %60 %
177Has Meta Twitter Card   Authority-0.121154 %63 %
178Uses JSON-LD HomeAndConstructionBusiness   Other-0.12112 %19 %
179Uses Schema pricecurrency   Other-0.12115 %46 %
180Uses JSON-LD Product   Other-0.12116 %51 %
181Has Privacy Policy   Trust-0.121155 %73 %
182Uses JSON-LD bestRating   Other-0.12118 %45 %
183Uses Microdata Offer   Other-0.12112 %13 %
184Uses Schema rating   Other-0.12116 %39 %
185Uses Schema reviewbody   Other-0.12115 %36 %
186Exact Matches in H1 Tags   Relevancy-0.121110 %78 %
187Variations in Meta Twitter Description   Relevancy-0.122125 %66 %
188Variations making whole H1 Tags   Relevancy-0.12116 %78 %
189Uses JSON-LD ratingValue   Other-0.121110 %58 %
190Variations in ID Attributes   Relevancy-0.129212 %79 %
191Uses JSON-LD BreadcrumbList   Other-0.121134 %68 %
192Uses Schema image   Other-0.121121 %66 %
193Uses Schema name   Other-0.121161 %67 %
194Page Size Kilobytes   Size-0.1297431084 %71 %
195Title Length   Size-0.12805283 %78 %
196Entities in H4 Tags-0.128218 %87 %
197Uses JSON-LD reviewBody   Other-0.12115 %37 %
198Variations in Class Attributes   Relevancy-0.1213141016 %75 %
199Has Entities in H2 Tags   Relevancy-0.121150 %83 %
200Uses JSON-LD Person   Other-0.121119 %59 %