Measures 150846 SEO Factors

149124 Built-In SEO Factors

139910 On-page SEO Factors

9214 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-0.2586224482 %82 %
2Load Time Milliseconds   Performance-0.2214200156183 %89 %
3Number of Referring Domains   Authority-0.224855017141 %88 %
4Number of Backlinks   Authority-0.221165169645741 %87 %
5Number of Top 200 Shared Factors Used   Diversity-0.21523795 %89 %
6Number of Top 50 Shared Factors Used   Diversity-0.21161293 %89 %
7Number of Top 100 Shared Factors Used   Diversity-0.21382895 %89 %
8Search Result Domain is .com, .net, or .org   Other-0.21116 %78 %
9Number of Do Follow Backlinks   Authority-0.211063176558438 %87 %
10Search Result Domain is .com   Other-0.2116 %78 %
11Variations in H1-H6 Tags   Relevancy-0.245758 %84 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.237658 %83 %
13Variations in H1 and H2 Tags   Relevancy-0.216455 %84 %
14Number of No Follow Backlinks   Authority-0.1910199367828 %84 %
15Clean Text Kilobytes   Size-0.19981269 %88 %
16Number of Unique Variations Used   Diversity-0.1952978 %81 %
17Variations in P Tags   Relevancy-0.192053060 %88 %
18Number of Includes   Technology-0.19522576 %81 %
19Unabridged Word Count   Size-0.1916706171283 %89 %
20LSI Words in Sentences   Relevancy-0.19251464066 %93 %
21Number of Heading Tags   Size-0.191171970 %84 %
22Entities in Sentences   Relevancy-0.1947712265 %93 %
23Word Count   Size-0.193779129783 %89 %
24Number of Distinct Entities Used   Diversity-0.19622774 %92 %
25Entities in H2 Tags-0.1950649 %91 %
26Variations in Div Tags   Relevancy-0.1867910169 %88 %
27Number of H2 Tags   Size-0.1821765 %86 %
28Number of P Tags   Size-0.181033469 %88 %
29Entities in the HTML Tag   Relevancy-0.1848212570 %93 %
30Number of Images   Size-0.181362370 %88 %
31Variations in Search Result Document File Name   Relevancy-0.183142 %82 %
32Number of H1 Tags   Size-0.183166 %89 %
33Variations in LI Tags   Relevancy-0.181622058 %85 %
34Has Meta Charset   Technology-0.181170 %83 %
35Number of Images with ALT Text   Size-0.181221664 %89 %
36Variations in H2 Tags   Relevancy-0.1815342 %82 %
37Number of HTML Tags   Size-0.18307393883 %87 %
38Number of DoFollow External Links   Authority-0.18561272 %88 %
39Number of Factors Used   Diversity-0.1843118195 %84 %
40Number of Facebook Pages   Authority-0.184252 %85 %
41LSI Words in H2 Tags   Relevancy-0.181041855 %91 %
42Number of External Links   Authority-0.18601373 %90 %
43Has JSON-LD Schema Markup   Relevancy-0.171150 %79 %
44Leading Variations in H1-H6 Tags   Relevancy-0.1712243 %81 %
45Number of DoFollow Links   Authority-0.1757813078 %89 %
46Entities in H3 Tags-0.1753639 %91 %
47Number of Links   Authority-0.1758513278 %89 %
48Variations in H1 Tags   Relevancy-0.176150 %85 %
49Number of HTTPS Links   Authority-0.1758513178 %89 %
50Variations in A Tags   Relevancy-0.171222158 %84 %
51Variation Count in Top 30KB   Relevancy-0.17792164 %86 %
52Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %81 %
53Variations in Body Tags   Relevancy-0.17122522575 %84 %
54Number of Internal Links   Authority-0.1757312077 %87 %
55Has Entities in H2 Tags   Relevancy-0.171150 %87 %
56Number of CSS Includes   Technology-0.1720969 %78 %
57Average Words Per Sentence   Size-0.171682875 %88 %
58Variations in HTML Tags   Relevancy-0.17122522173 %85 %
59Entities in Title Tag   Relevancy-0.176364 %91 %
60Entities in H1 Tags-0.1613250 %90 %
61Number of Instagram Pages   Authority-0.1613240 %82 %
62Variations in Search Result URL Path   Relevancy-0.163145 %80 %
63Variations in A Tag HREF Attributes   Relevancy-0.162373652 %85 %
64Variations in Distinct A Tag HREF Attributes   Relevancy-0.161532253 %85 %
65Variations in Search Result Link Text   Relevancy-0.164278 %81 %
66Has Entities in H1 Tags   Relevancy-0.161152 %88 %
67Number of HTML Comments   Size-0.167325068 %85 %
68Variations in Main Tags   Relevancy-0.165715235 %83 %
69Number of H3 Tags   Size-0.1638753 %84 %
70Number of Images without ALT Text   Size-0.1644850 %82 %
71Term Frequency   Relevancy-0.164374 %84 %
72Variations in Span Tags   Relevancy-0.1642944 %87 %
73Variations in ALT Attributes   Relevancy-0.1681638 %81 %
74Variations in Search Result Display URL   Relevancy-0.164278 %81 %
75Number of Forms   Technology-0.1613245 %78 %
76LSI Words in H1 Tags   Relevancy-0.1629456 %92 %
77Number of LinkedIn Pages   Authority-0.167128 %84 %
78Flesch Kincaid Reading Grade Level   Other-0.156291 %89 %
79Variations in Absolute URLs   Relevancy-0.153274856 %86 %
80Variations in Sentences   Relevancy-0.153253968 %86 %
81LSI Words in H3 Tags   Relevancy-0.15951745 %88 %
82Variations in the Title Tag   Relevancy-0.154264 %81 %
83Has Form   Technology-0.151145 %75 %
84Variations in Nav Tags   Relevancy-0.152312543 %81 %
85Number of Facebook Accounts   Authority-0.152125 %82 %
86Variations in First 100 Words   Relevancy-0.1523662 %81 %
87Variations in Search Result URL   Relevancy-0.154152 %77 %
88Number Of JSON-LD Types   Relevancy-0.15481253 %82 %
89Variations in the Canonical URL   Relevancy-0.154247 %81 %
90Number of Questions In Headings   Size-0.158236 %84 %
91Variations in H3 Tags   Relevancy-0.1530331 %82 %
92Search Result Number of Dirs in Path   Other-0.153274 %79 %
93Number of US Phone Numbers   Trust-0.1511541535 %79 %
94Variations in OpenGraph Title   Relevancy-0.143254 %75 %
95Variations in Section Tags   Relevancy-0.14961734 %86 %
96Search Result Summary Length   Size-0.1415915295 %76 %
97Percentage of DoFollow External Links   Authority-0.14261171 %83 %
98Leading Variations in H1 Tags   Relevancy-0.141126 %79 %
99Number of Social Pages   Authority-0.1415460 %87 %
100Is Home Page   Other-0.141116 %54 %
101Percentage of DoFollow Links   Authority-0.14998378 %81 %
102Number of Social Accounts   Authority-0.143238 %84 %
103Number of Questions In H2 Tags   Size-0.143123 %79 %
104Has Entities in H3 Tags   Relevancy-0.141140 %85 %
105Number of Sentences   Size-0.1462113081 %79 %
106TF/IDF   Relevancy-0.141154 %81 %
107Exact Matches in the HTML Tag   Relevancy-0.142641727 %84 %
108Variations in Meta Description   Relevancy-0.144252 %83 %
109Has US Phone Number   Trust-0.141135 %74 %
110Variation Density in Top 30KB   Relevancy-0.146260 %75 %
111Headings Has Question   Other-0.141136 %80 %
112Uses JSON-LD name   Other-0.141151 %76 %
113Number of JavaScript Includes   Technology-0.14421779 %81 %
114Variations making whole H1-H6 Tags   Relevancy-0.142116 %75 %
115Search Result Host Length   Size-0.14241783 %79 %
116Variations in Footer Tags   Relevancy-0.1361734 %83 %
117Number of Twitter Accounts   Authority-0.131118 %78 %
118Search Result Domain Length   Size-0.13241783 %80 %
119Search Result Uses HTTPS   Other-0.131183 %77 %
120Entities in Meta Description Tag   Relevancy-0.137353 %85 %
121Clean Keyword Density in the HTML Tag   Relevancy-0.1312467 %71 %
122Leading Variations in Title Tag   Relevancy-0.131132 %78 %
123Inline CSS Kilobytes   Size-0.132246065 %79 %
124Number of H4 Tags   Size-0.1346332 %78 %
125Has Meta Viewport   Technology-0.131181 %75 %
126Variations making whole A Tags   Relevancy-0.135126 %76 %
127Has Meta Robots   Other-0.131124 %77 %
128Is Article Page   Other-0.131142 %73 %
129Has Apple Touch Icon   Technology-0.131149 %75 %
130Variations Making Whole LI Tags   Relevancy-0.136122 %79 %
131Title Tag Has Entities   Relevancy-0.131164 %81 %
132Exact Matches in H1-H6 Tags   Relevancy-0.139119 %82 %
133Number of Absolute URLs   Authority-0.13152425182 %66 %
134Exact Matches in Top 30KB   Relevancy-0.1314218 %80 %
135Variations in OpenGraph Description   Relevancy-0.134248 %82 %
136Percentage of DoFollow Internal Links   Authority-0.13907276 %76 %
137Variations in Script Tags   Relevancy-0.137977862 %78 %
138Leading Variations in H2 Tags   Relevancy-0.1310122 %82 %
139Has Contact Page   Trust-0.131161 %67 %
140Uses JSON-LD url   Other-0.131144 %73 %
141Number Of Claimed Brands   Other-0.1314223 %79 %
142Variations in Strong Tags   Relevancy-0.1310224 %81 %
143Number of Questions   Size-0.13801467 %67 %
144Variations making whole H1, H2, and H3 Tags   Relevancy-0.131114 %76 %
145Has FavIcon   Technology-0.131175 %68 %
146LSI Words in Title Tag   Relevancy-0.1212570 %87 %
147Variations in I Tags   Relevancy-0.1215320 %84 %
148Uses JSON-LD description   Other-0.121141 %70 %
149Number of Email Addresses   Trust-0.1230442 %80 %
150LSI Words in Meta Description Tag   Relevancy-0.12281057 %88 %
151Has HREF Lang   Technology-0.121112 %73 %
152Entities in H4 Tags-0.1210218 %87 %
153Number of HREF Lang Tags   Size-0.1224211 %78 %
154Variations Making Whole Span Tags   Relevancy-0.129118 %82 %
155Uses JSON-LD Organization   Other-0.121130 %74 %
156Uses JSON-LD GovernmentOrganization   Other-0.12112 %11 %
157LSI Words in H4 Tags   Relevancy-0.1249625 %81 %
158Uses Schema website   Other-0.121133 %62 %
159Uses Schema datemodified   Other-0.121131 %62 %
160Uses JSON-LD ListItem   Other-0.121133 %69 %
161Page Size Kilobytes   Size-0.1285232082 %61 %
162Uses JSON-LD datePublished   Other-0.121132 %70 %
163Variations in Article Tags   Relevancy-0.121151224 %80 %
164Leading Variations in H3 Tags   Relevancy-0.128115 %78 %
165Number of Prices   Size-0.125699166 %77 %
166Uses JSON-LD dateModified   Other-0.121130 %68 %
167Has Canonical URL   Authority-0.121171 %69 %
168Uses Schema organization   Other-0.121133 %68 %
169Uses JSON-LD WebSite   Other-0.121131 %70 %
170Uses Schema governmentorganization   Other-0.12112 %12 %
171Uses Schema webpage   Other-0.121132 %61 %
172Uses Schema postalcode   Other-0.121116 %59 %
173Uses JSON-LD ImageObject   Other-0.121130 %69 %
174Uses JSON-LD BreadcrumbList   Other-0.121133 %70 %
175Number of Nofollow Links   Authority-0.1220321 %79 %
176Variations in H4-H6 Tags   Relevancy-0.1219115 %80 %
177Uses Schema faqpage   Other-0.12118 %61 %
178Has Email   Trust-0.121143 %76 %
179Has Meta Description   Relevancy-0.111166 %67 %
180Has Google Verify   Technology-0.111118 %65 %
181Uses Schema image   Other-0.111118 %60 %
182Variations in Button Tags   Relevancy-0.1134210 %79 %
183Uses JSON-LD postalCode   Other-0.111115 %64 %
184Variations in the last 100 words   Relevancy-0.1111346 %74 %
185Uses JSON-LD WebPage   Other-0.111129 %69 %
186Word Count in Meta Description   Size-0.11431966 %71 %
187Number of NoFollow External Links   Authority-0.1119214 %79 %
188Variations in ID Attributes   Relevancy-0.1112213 %82 %
189Has OpenGraph Type   Relevancy-0.111162 %65 %
190Number of H5 Tags   Size-0.1112214 %76 %
191Uses Schema streetaddress   Other-0.111115 %60 %
192Number of Questions In H3 Tags   Size-0.114117 %80 %
193Uses JSON-LD mainEntity   Other-0.11111 %18 %
194Uses JSON-LD streetAddress   Other-0.111114 %65 %
195Meta Description Tag Has Entities   Relevancy-0.111154 %73 %
196Uses Schema addresslocality   Other-0.111117 %61 %
197Number of Meta Generator Tags   Technology-0.112133 %69 %
198Uses Schema telephone   Other-0.111119 %58 %
199Uses JSON-LD representativeOfPage   Other-0.11111 %13 %
200Uses Schema postaladdress   Other-0.111117 %59 %