Measures 150830 SEO Factors

149108 Built-In SEO Factors

139900 On-page SEO Factors

9208 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-0.2586225183 %82 %
2Load Time Milliseconds   Performance-0.2214200159184 %89 %
3Number of Referring Domains   Authority-0.214855018241 %88 %
4Number of Backlinks   Authority-0.211165169688142 %87 %
5Search Result Domain is .com, .net, or .org   Other-0.21116 %78 %
6Number of Top 50 Shared Factors Used   Diversity-0.21161293 %88 %
7Number of Top 200 Shared Factors Used   Diversity-0.21523895 %89 %
8Number of Top 100 Shared Factors Used   Diversity-0.21382895 %89 %
9Number of Do Follow Backlinks   Authority-0.211063176597538 %87 %
10Search Result Domain is .com   Other-0.21116 %78 %
11Variations in H1-H6 Tags   Relevancy-0.245758 %84 %
12Variations in H1, H2, and H3 Tags   Relevancy-0.237658 %83 %
13Clean Text Kilobytes   Size-0.2981269 %88 %
14Variations in H1 and H2 Tags   Relevancy-0.1916455 %84 %
15Number of Includes   Technology-0.19522576 %80 %
16Variations in P Tags   Relevancy-0.192052960 %88 %
17Unabridged Word Count   Size-0.1916706174783 %89 %
18Number of Unique Variations Used   Diversity-0.1951978 %80 %
19Number of No Follow Backlinks   Authority-0.1910199373128 %83 %
20Word Count   Size-0.193779131783 %89 %
21LSI Words in Sentences   Relevancy-0.19251465366 %93 %
22Entities in Sentences   Relevancy-0.1947712465 %92 %
23Number of Heading Tags   Size-0.191171970 %84 %
24Number of Distinct Entities Used   Diversity-0.19622774 %92 %
25Entities in H2 Tags-0.1950649 %92 %
26Entities in the HTML Tag   Relevancy-0.1948212770 %92 %
27Variations in Div Tags   Relevancy-0.1867910169 %88 %
28Number of Images   Size-0.181362470 %88 %
29Number of P Tags   Size-0.181033469 %87 %
30Number of H2 Tags   Size-0.1821765 %86 %
31Number of H1 Tags   Size-0.183166 %90 %
32Has Meta Charset   Technology-0.181170 %82 %
33Variations in LI Tags   Relevancy-0.181622058 %85 %
34Number of Images with ALT Text   Size-0.181221764 %90 %
35Variations in Search Result Document File Name   Relevancy-0.183143 %82 %
36Number of HTML Tags   Size-0.18307395283 %87 %
37Number of DoFollow External Links   Authority-0.18561273 %88 %
38Number of External Links   Authority-0.18601373 %90 %
39Number of Factors Used   Diversity-0.1843118295 %83 %
40Has JSON-LD Schema Markup   Relevancy-0.181150 %79 %
41Number of Facebook Pages   Authority-0.184252 %85 %
42Variations in H2 Tags   Relevancy-0.1815342 %82 %
43Number of DoFollow Links   Authority-0.1857813278 %89 %
44Number of Links   Authority-0.1858513478 %89 %
45Number of HTTPS Links   Authority-0.1758513378 %89 %
46LSI Words in H2 Tags   Relevancy-0.171041854 %91 %
47Variations in A Tags   Relevancy-0.171222158 %84 %
48Leading Variations in H1-H6 Tags   Relevancy-0.1712242 %81 %
49Number of Internal Links   Authority-0.1757312277 %87 %
50Variation Count in Top 30KB   Relevancy-0.17792164 %85 %
51Entities in H3 Tags-0.1753639 %90 %
52Variations in H1 Tags   Relevancy-0.176150 %85 %
53Has Entities in H2 Tags   Relevancy-0.171150 %87 %
54Average Words Per Sentence   Size-0.171682875 %89 %
55Number of CSS Includes   Technology-0.1720969 %78 %
56Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1711241 %82 %
57Number of Instagram Pages   Authority-0.1713241 %82 %
58Variations in Body Tags   Relevancy-0.17122522575 %83 %
59Entities in H1 Tags-0.1713250 %90 %
60Entities in Title Tag   Relevancy-0.166364 %90 %
61Variations in A Tag HREF Attributes   Relevancy-0.162373752 %85 %
62Variations in HTML Tags   Relevancy-0.16122522074 %85 %
63Variations in Distinct A Tag HREF Attributes   Relevancy-0.161532253 %85 %
64Number of HTML Comments   Size-0.167324968 %85 %
65Has Entities in H1 Tags   Relevancy-0.161152 %88 %
66Variations in Search Result URL Path   Relevancy-0.163145 %80 %
67Number of Forms   Technology-0.1613245 %77 %
68Number of Images without ALT Text   Size-0.1644850 %82 %
69Variations in Main Tags   Relevancy-0.165715335 %82 %
70Number of H3 Tags   Size-0.1638853 %84 %
71Number of LinkedIn Pages   Authority-0.167128 %84 %
72Variations in ALT Attributes   Relevancy-0.1681638 %81 %
73LSI Words in H1 Tags   Relevancy-0.1629455 %93 %
74Variations in Span Tags   Relevancy-0.1642844 %87 %
75Term Frequency   Relevancy-0.164374 %84 %
76Variations in Absolute URLs   Relevancy-0.153274856 %86 %
77Variations in Search Result Link Text   Relevancy-0.154278 %80 %
78Flesch Kincaid Reading Grade Level   Other-0.156291 %89 %
79Has Form   Technology-0.151144 %74 %
80Variations in Nav Tags   Relevancy-0.152312543 %81 %
81Variations in Sentences   Relevancy-0.153253968 %86 %
82LSI Words in H3 Tags   Relevancy-0.15951745 %88 %
83Variations in Search Result Display URL   Relevancy-0.154278 %81 %
84Number of Facebook Accounts   Authority-0.152125 %82 %
85Number Of JSON-LD Types   Relevancy-0.15481253 %82 %
86Search Result Number of Dirs in Path   Other-0.153275 %79 %
87Variations in Section Tags   Relevancy-0.15961734 %85 %
88Variations in the Title Tag   Relevancy-0.154264 %81 %
89Search Result Summary Length   Size-0.1515915194 %75 %
90Number of US Phone Numbers   Trust-0.1511541534 %79 %
91Number of Questions In Headings   Size-0.148237 %84 %
92Variations in First 100 Words   Relevancy-0.1422662 %80 %
93Variations in the Canonical URL   Relevancy-0.144246 %80 %
94Variations in Search Result URL   Relevancy-0.144152 %76 %
95Number of Questions In H2 Tags   Size-0.143124 %79 %
96Variations in H3 Tags   Relevancy-0.1430331 %82 %
97Percentage of DoFollow External Links   Authority-0.14261272 %82 %
98Leading Variations in H1 Tags   Relevancy-0.141127 %79 %
99Number of Social Accounts   Authority-0.143238 %84 %
100Number of Social Pages   Authority-0.1415460 %87 %
101Variations in OpenGraph Title   Relevancy-0.143155 %74 %
102Has Entities in H3 Tags   Relevancy-0.141140 %85 %
103Number of Sentences   Size-0.1462113281 %79 %
104Percentage of DoFollow Links   Authority-0.14998378 %81 %
105TF/IDF   Relevancy-0.141155 %81 %
106Exact Matches in the HTML Tag   Relevancy-0.142641828 %84 %
107Has US Phone Number   Trust-0.141134 %73 %
108Uses JSON-LD name   Other-0.141151 %76 %
109Variations in Meta Description   Relevancy-0.144252 %82 %
110Number of Twitter Accounts   Authority-0.141118 %77 %
111Variations making whole A Tags   Relevancy-0.145126 %76 %
112Number of JavaScript Includes   Technology-0.14421779 %81 %
113Is Home Page   Other-0.141115 %53 %
114Variation Density in Top 30KB   Relevancy-0.146261 %74 %
115Headings Has Question   Other-0.131137 %79 %
116Search Result Host Length   Size-0.13241783 %79 %
117Number of H4 Tags   Size-0.1346332 %78 %
118Variations in Footer Tags   Relevancy-0.1361734 %83 %
119Entities in Meta Description Tag   Relevancy-0.137353 %84 %
120Variations making whole H1-H6 Tags   Relevancy-0.132116 %75 %
121Is Article Page   Other-0.131142 %73 %
122Search Result Uses HTTPS   Other-0.131183 %77 %
123Has Meta Robots   Other-0.131124 %76 %
124Leading Variations in Title Tag   Relevancy-0.131132 %78 %
125Variations Making Whole LI Tags   Relevancy-0.136122 %78 %
126Search Result Domain Length   Size-0.13241783 %80 %
127Exact Matches in Top 30KB   Relevancy-0.1314219 %79 %
128Has Apple Touch Icon   Technology-0.131149 %74 %
129Exact Matches in H1-H6 Tags   Relevancy-0.139120 %82 %
130Uses JSON-LD GovernmentOrganization   Other-0.13112 %11 %
131Has Meta Viewport   Technology-0.131181 %74 %
132Number of Absolute URLs   Authority-0.13152425582 %66 %
133Title Tag Has Entities   Relevancy-0.131164 %80 %
134Clean Keyword Density in the HTML Tag   Relevancy-0.139467 %70 %
135Inline CSS Kilobytes   Size-0.132246165 %78 %
136Number of Questions   Size-0.13801568 %67 %
137Uses JSON-LD url   Other-0.131144 %72 %
138Percentage of DoFollow Internal Links   Authority-0.13907376 %76 %
139Number Of Claimed Brands   Other-0.1314223 %78 %
140Uses Schema governmentorganization   Other-0.13112 %12 %
141Uses JSON-LD Organization   Other-0.131131 %74 %
142Has Contact Page   Trust-0.121161 %67 %
143Variations in OpenGraph Description   Relevancy-0.124249 %81 %
144Entities in H4 Tags-0.1210217 %87 %
145Variations in Strong Tags   Relevancy-0.1210224 %80 %
146Variations in Script Tags   Relevancy-0.127977762 %78 %
147LSI Words in Meta Description Tag   Relevancy-0.12281057 %89 %
148Variations making whole H1, H2, and H3 Tags   Relevancy-0.121114 %76 %
149Leading Variations in H2 Tags   Relevancy-0.1210121 %82 %
150Has FavIcon   Technology-0.121175 %68 %
151Uses JSON-LD ListItem   Other-0.121133 %69 %
152Number of Email Addresses   Trust-0.1230442 %79 %
153Has HREF Lang   Technology-0.121112 %73 %
154Variations in I Tags   Relevancy-0.1215320 %83 %
155LSI Words in H4 Tags   Relevancy-0.1249624 %80 %
156Number of HREF Lang Tags   Size-0.1224211 %77 %
157LSI Words in Title Tag   Relevancy-0.1212570 %86 %
158Uses JSON-LD description   Other-0.121141 %70 %
159Variations Making Whole Span Tags   Relevancy-0.129118 %82 %
160Number of Prices   Size-0.125698766 %77 %
161Uses Schema organization   Other-0.121133 %68 %
162Page Size Kilobytes   Size-0.1285232682 %60 %
163Uses JSON-LD BreadcrumbList   Other-0.121133 %69 %
164Uses Schema postalcode   Other-0.121115 %58 %
165Has Canonical URL   Authority-0.121171 %69 %
166Uses Schema website   Other-0.121134 %61 %
167Variations in H4-H6 Tags   Relevancy-0.1219115 %79 %
168Variations in Article Tags   Relevancy-0.121151224 %80 %
169Uses Schema image   Other-0.121119 %60 %
170Leading Variations in H3 Tags   Relevancy-0.128115 %77 %
171Uses Schema datemodified   Other-0.121132 %60 %
172Uses JSON-LD postalCode   Other-0.121114 %64 %
173Uses JSON-LD mainEntity   Other-0.12111 %16 %
174Uses Schema faqpage   Other-0.12119 %61 %
175Has Email   Trust-0.121143 %75 %
176Number of Nofollow Links   Authority-0.1220321 %80 %
177Uses Schema webpage   Other-0.121132 %59 %
178Uses JSON-LD WebSite   Other-0.121131 %69 %
179Variations in Button Tags   Relevancy-0.1234210 %79 %
180Uses Schema streetaddress   Other-0.121115 %59 %
181Uses JSON-LD datePublished   Other-0.111132 %69 %
182Word Count in Meta Description   Size-0.11432066 %71 %
183Uses JSON-LD ImageObject   Other-0.111130 %69 %
184Has Meta Description   Relevancy-0.111166 %67 %
185Uses JSON-LD dateModified   Other-0.111130 %67 %
186Uses JSON-LD streetAddress   Other-0.111114 %65 %
187Exact Matches in Title Tag   Relevancy-0.112119 %81 %
188Uses Schema addresslocality   Other-0.111116 %60 %
189Has Google Verify   Technology-0.111118 %65 %
190Variations in the last 100 words   Relevancy-0.1111346 %74 %
191Uses Schema postaladdress   Other-0.111117 %59 %
192Number of NoFollow External Links   Authority-0.1119214 %79 %
193Variations in ID Attributes   Relevancy-0.1112213 %83 %
194Uses JSON-LD PostalAddress   Other-0.111116 %64 %
195Number of H5 Tags   Size-0.1112214 %76 %
196Uses JSON-LD WebPage   Other-0.111129 %68 %
197Meta Description Tag Has Entities   Relevancy-0.111154 %73 %
198Uses JSON-LD addressCountry   Other-0.111113 %63 %
199Uses JSON-LD FAQPage   Other-0.11118 %65 %
200Uses Schema telephone   Other-0.111119 %59 %