Measures 150169 SEO Factors

148447 Built-In SEO Factors

139249 On-page SEO Factors

9198 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 2026-04     previous

Top SEO Factor data is updated daily for latest "month to date" measurements.

NameCorrelation#1 MaxPage 1 AvgUsage %Searches %
1Number of Top 50 Shared Factors Used   Diversity-0.24151291 %93 %
2Number of Unique LSI Words Used   Diversity-0.2389732279 %89 %
3Load Time Milliseconds   Performance-0.235087143881 %87 %
4Number of Top 100 Shared Factors Used   Diversity-0.23372993 %95 %
5Variations in H1, H2, and H3 Tags   Relevancy-0.2214656 %87 %
6Variations in H1-H6 Tags   Relevancy-0.2220757 %86 %
7Number of Top 200 Shared Factors Used   Diversity-0.22503893 %96 %
8Number of Unique Variations Used   Diversity-0.2220776 %90 %
9Variations in H1 and H2 Tags   Relevancy-0.229453 %88 %
10Variations in Body Tags   Relevancy-0.2267220573 %91 %
11Search Result Domain is .com, .net, or .org   Other-0.22116 %84 %
12Variations in HTML Tags   Relevancy-0.2267220372 %92 %
13Search Result Domain is .com   Other-0.21116 %82 %
14Variations in Search Result Document File Name   Relevancy-0.213140 %88 %
15Entities in Title Tag   Relevancy-0.217361 %93 %
16Number of Distinct Entities Used   Diversity-0.21532973 %95 %
17Number of Factors Used   Diversity-0.2125717593 %91 %
18Variations in H1 Tags   Relevancy-0.23148 %88 %
19Variations in Search Result Display URL   Relevancy-0.23272 %79 %
20Variations in Search Result Link Text   Relevancy-0.23272 %79 %
21Leading Variations in H1-H6 Tags   Relevancy-0.25236 %87 %
22Variations in P Tags   Relevancy-0.22002758 %94 %
23Variations in Div Tags   Relevancy-0.234310269 %93 %
24Entities in H1 Tags-0.25249 %93 %
25LSI Words in H1 Tags   Relevancy-0.214556 %93 %
26LSI Words in Sentences   Relevancy-0.2303386965 %96 %
27Variations in Search Result URL Path   Relevancy-0.23143 %85 %
28Term Frequency   Relevancy-0.24373 %90 %
29Variations in the Canonical URL   Relevancy-0.26243 %88 %
30Leading Variations in H1, H2, and H3 Tags   Relevancy-0.194134 %88 %
31LSI Words in Title Tag   Relevancy-0.1914671 %93 %
32Variations in the Title Tag   Relevancy-0.193261 %87 %
33Variations in LI Tags   Relevancy-0.19761757 %93 %
34Variation Count in Top 30KB   Relevancy-0.19811858 %84 %
35Entities in Sentences   Relevancy-0.1944915562 %97 %
36Variations in A Tags   Relevancy-0.19742056 %89 %
37Entities in the HTML Tag   Relevancy-0.1945115767 %97 %
38Variations in Meta Description   Relevancy-0.194250 %79 %
39Number of Heading Tags   Size-0.18512067 %84 %
40Word Count   Size-0.182908148681 %88 %
41Variations in Sentences   Relevancy-0.181723165 %93 %
42Variations in A Tag HREF Attributes   Relevancy-0.181573951 %91 %
43Number of HTML Tags   Size-0.182647106380 %84 %
44Number of P Tags   Size-0.18934065 %88 %
45Entities in H2 Tags-0.1827846 %94 %
46Variations in Absolute URLs   Relevancy-0.182085452 %92 %
47Number of Images with ALT Text   Size-0.18772163 %86 %
48Unabridged Word Count   Size-0.183483187881 %89 %
49Variations in Search Result URL   Relevancy-0.183148 %84 %
50Number of HTTPS Links   Authority-0.1853214874 %88 %
51Number of Links   Authority-0.1853315074 %88 %
52Variations in Span Tags   Relevancy-0.1824944 %86 %
53Number of DoFollow Links   Authority-0.1852414674 %88 %
54Variations in ALT Attributes   Relevancy-0.1853741 %84 %
55Variations in Distinct A Tag HREF Attributes   Relevancy-0.181162550 %92 %
56Clean Text Kilobytes   Size-0.18271366 %88 %
57Number of Internal Links   Authority-0.1852813673 %86 %
58Leading Variations in Title Tag   Relevancy-0.181125 %82 %
59Number of H2 Tags   Size-0.1813760 %88 %
60Variations in OpenGraph Title   Relevancy-0.182150 %79 %
61TF/IDF   Relevancy-0.181151 %88 %
62Clean Keyword Density in the HTML Tag   Relevancy-0.177362 %78 %
63Variations in H2 Tags   Relevancy-0.178338 %88 %
64Variations in Script Tags   Relevancy-0.174776258 %81 %
65Variations in OpenGraph Description   Relevancy-0.173144 %76 %
66LSI Words in H2 Tags   Relevancy-0.17752354 %94 %
67Exact Matches in the HTML Tag   Relevancy-0.171871532 %86 %
68Variations in First 100 Words   Relevancy-0.1717559 %88 %
69Number of Referring Domains   Authority-0.17304010844 %73 %
70Number of H1 Tags   Size-0.172162 %88 %
71Entities in H3 Tags-0.1720738 %94 %
72Variations in Main Tags   Relevancy-0.171715233 %88 %
73Number of Forms   Technology-0.178249 %70 %
74Variation Density in Top 30KB   Relevancy-0.177254 %85 %
75Variations in Nav Tags   Relevancy-0.171282340 %89 %
76Number of DoFollow External Links   Authority-0.17291370 %84 %
77Number of External Links   Authority-0.17301471 %86 %
78Number of Images   Size-0.171032867 %89 %
79Number of Backlinks   Authority-0.1619454224029544 %79 %
80Entities in Meta Description Tag   Relevancy-0.168354 %85 %
81Has Entities in H1 Tags   Relevancy-0.161150 %91 %
82Number of Do Follow Backlinks   Authority-0.1619453743850340 %75 %
83Average Words Per Sentence   Size-0.161223370 %83 %
84Leading Variations in H1 Tags   Relevancy-0.161121 %88 %
85Number of Includes   Technology-0.16492676 %75 %
86Number of Facebook Pages   Authority-0.166252 %85 %
87Flesch Kincaid Reading Grade Level   Other-0.166289 %85 %
88LSI Words in Meta Description Tag   Relevancy-0.16231159 %91 %
89Number of H3 Tags   Size-0.1615850 %83 %
90Number of US Phone Numbers   Trust-0.16891243 %86 %
91Percentage of DoFollow Links   Authority-0.16988074 %87 %
92Variations in Section Tags   Relevancy-0.16411433 %85 %
93Has Form   Technology-0.161149 %73 %
94Has Entities in H2 Tags   Relevancy-0.161147 %89 %
95Has JSON-LD Schema Markup   Relevancy-0.161149 %85 %
96Number of CSS Includes   Technology-0.1617969 %76 %
97Number of No Follow Backlinks   Authority-0.15328486368035 %65 %
98Has US Phone Number   Trust-0.151142 %81 %
99Number Of JSON-LD Types   Relevancy-0.151451550 %89 %
100Has Meta Robots   Other-0.151121 %75 %
101Search Result Number of Dirs in Path   Other-0.153274 %77 %
102LSI Words in H3 Tags   Relevancy-0.15632345 %87 %
103Number of H4 Tags   Size-0.1527431 %80 %
104Number of HTML Comments   Size-0.151884463 %83 %
105Number of Sentences   Size-0.1552714278 %85 %
106Uses JSON-LD name   Other-0.151147 %81 %
107Number of Absolute URLs   Authority-0.1592729179 %78 %
108Exact Matches in Sentences   Relevancy-0.1535423 %86 %
109Exact Matches in H1-H6 Tags   Relevancy-0.157122 %85 %
110Variations in H3 Tags   Relevancy-0.159327 %84 %
111Percentage of DoFollow Internal Links   Authority-0.15877073 %87 %
112Search Result Uses HTTPS   Other-0.151180 %79 %
113Has Privacy Policy   Trust-0.151156 %80 %
114Uses Schema name   Other-0.151156 %72 %
115Number of Questions In Headings   Size-0.156232 %82 %
116Uses Schema product   Other-0.141110 %48 %
117Number of Images without ALT Text   Size-0.1430852 %84 %
118Has Canonical URL   Authority-0.141167 %80 %
119Entities in H4 Tags-0.1413218 %88 %
120Leading Variations in H2 Tags   Relevancy-0.143117 %85 %
121Exact Matches in Title Tag   Relevancy-0.142119 %83 %
122Has Schema Markup   Relevancy-0.141159 %73 %
123Uses JSON-LD url   Other-0.141142 %79 %
124Word Count in Meta Description   Size-0.14322064 %69 %
125Title Tag Has Entities   Relevancy-0.141161 %88 %
126Variations in TITLE Attributes   Relevancy-0.1437635 %76 %
127Meta Description Length   Size-0.1419611864 %69 %
128Has Meta Charset   Technology-0.141166 %84 %
129Uses Schema url   Other-0.141152 %71 %
130Has Meta Twitter Card   Authority-0.141147 %58 %
131Uses JSON-LD description   Other-0.141139 %71 %
132Variations Making Whole LI Tags   Relevancy-0.142118 %78 %
133Number of JavaScript Includes   Technology-0.14401875 %75 %
134Exact Matches in Top 30KB   Relevancy-0.148217 %79 %
135Has Contact Page   Trust-0.141163 %72 %
136Inline CSS Kilobytes   Size-0.141225863 %83 %
137Has Entities in H3 Tags   Relevancy-0.141138 %86 %
138Title Length   Size-0.14815378 %71 %
139Variations in Footer Tags   Relevancy-0.1425632 %88 %
140LSI Words in H4 Tags   Relevancy-0.1453726 %84 %
141Variations in Strong Tags   Relevancy-0.149223 %79 %
142Has Meta Viewport   Technology-0.131177 %78 %
143Number of Nofollow Links   Authority-0.1318422 %82 %
144Number of Questions   Size-0.13351263 %75 %
145Search Result Domain Length   Size-0.13221681 %79 %
146Search Result Host Length   Size-0.13221681 %79 %
147Variations in Meta Twitter Content   Relevancy-0.132124 %64 %
148Number of LinkedIn Pages   Authority-0.132130 %79 %
149Has Google Verify   Technology-0.131118 %65 %
150Variations Making Whole Span Tags   Relevancy-0.133114 %87 %
151Number of Facebook Accounts   Authority-0.133125 %76 %
152Percentage of DoFollow External Links   Authority-0.13201169 %78 %
153Variations making whole H1-H6 Tags   Relevancy-0.131111 %76 %
154Uses Schema person   Other-0.131125 %46 %
155Is Home Page   Other-0.131112 %40 %
156Number of Social Accounts   Authority-0.137239 %88 %
157Variations in Meta Twitter Description   Relevancy-0.132121 %71 %
158Variations in I Tags   Relevancy-0.1310319 %79 %
159Title Word Count   Size-0.1312878 %75 %
160Percentage of NoFollow Links   Authority-0.137220 %79 %
161Headings Has Question   Other-0.131132 %86 %
162Exact Matches in H1 Tags   Relevancy-0.131116 %86 %
163Page Size Kilobytes   Size-0.13103736780 %66 %
164Uses Schema listitem   Other-0.131139 %71 %
165Number of Social Pages   Authority-0.1311457 %77 %
166Inline JavaScript Kilobytes   Size-0.1352417675 %63 %
167Uses Schema description   Other-0.131145 %68 %
168Uses Schema website   Other-0.131128 %62 %
169Has OpenGraph Type   Relevancy-0.131158 %67 %
170Number Of Claimed Brands   Other-0.1315323 %79 %
171Uses Schema pricespecification   Other-0.13111 %16 %
172Uses JSON-LD BreadcrumbList   Other-0.131130 %84 %
173Uses JSON-LD Product   Other-0.13119 %53 %
174Uses Schema breadcrumblist   Other-0.131139 %72 %
175Number of Email Addresses   Trust-0.1358436 %81 %
176Variations making whole H1, H2, and H3 Tags   Relevancy-0.131110 %78 %
177Uses Schema item   Other-0.131128 %59 %
178Variations in Figure Tags   Relevancy-0.1344510 %82 %
179Uses JSON-LD ListItem   Other-0.131130 %84 %
180Has Meta Description   Relevancy-0.131163 %72 %
181Has Entities in H4 Tags   Relevancy-0.131118 %81 %
182Uses Microdata articleBody   Other-0.13112 %15 %
183Number of Questions In H2 Tags   Size-0.134122 %79 %
184Variations in Class Attributes   Relevancy-0.12110515 %87 %
185Variations in the last 100 words   Relevancy-0.129239 %82 %
186Variations in Button Tags   Relevancy-0.121728 %77 %
187Uses Schema organization   Other-0.121132 %71 %
188Uses Schema imageobject   Other-0.121137 %57 %
189Leading Variations in H3 Tags   Relevancy-0.122111 %77 %
190Variations in B Tags   Relevancy-0.1219211 %74 %
191Uses JSON-LD datePublished   Other-0.121129 %64 %
192Uses JSON-LD Organization-0.121128 %75 %
193Uses JSON-LD Thing   Other-0.12113 %46 %
194Number of Questions In H3 Tags   Size-0.123115 %78 %
195Number of Prices   Size-0.123648966 %79 %
196Uses Schema aggregaterating   Other-0.121110 %62 %
197Has Meta Twitter Site   Authority-0.121123 %49 %
198Uses JSON-LD MerchantReturnPolicy   Other-0.12113 %14 %
199Uses Schema merchantreturnpolicy   Other-0.12113 %14 %
200Uses Schema ratingvalue   Other-0.121110 %56 %