Measures 150163 SEO Factors

148441 Built-In SEO Factors

139243 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 %
1Load Time Milliseconds   Performance-0.245087152581 %87 %
2Number of Top 50 Shared Factors Used   Diversity-0.23151291 %91 %
3Number of Unique LSI Words Used   Diversity-0.2389733979 %91 %
4Search Result Domain is .com, .net, or .org   Other-0.22116 %84 %
5Variations in H1, H2, and H3 Tags   Relevancy-0.2214657 %86 %
6Search Result Domain is .com   Other-0.22116 %81 %
7Number of Top 100 Shared Factors Used   Diversity-0.22372992 %95 %
8Variations in H1-H6 Tags   Relevancy-0.2120758 %85 %
9Number of Top 200 Shared Factors Used   Diversity-0.21503892 %96 %
10Variations in H1 and H2 Tags   Relevancy-0.219454 %88 %
11Variations in Body Tags   Relevancy-0.2167221773 %91 %
12Number of Unique Variations Used   Diversity-0.2120777 %89 %
13Variations in HTML Tags   Relevancy-0.2167221572 %92 %
14Entities in Title Tag   Relevancy-0.27362 %91 %
15LSI Words in Title Tag   Relevancy-0.214772 %91 %
16LSI Words in H1 Tags   Relevancy-0.214557 %92 %
17Variations in Search Result Document File Name   Relevancy-0.23140 %87 %
18Number of Factors Used   Diversity-0.225717792 %92 %
19LSI Words in Sentences   Relevancy-0.2303391665 %97 %
20Leading Variations in H1-H6 Tags   Relevancy-0.195236 %86 %
21Number of Distinct Entities Used   Diversity-0.19532972 %96 %
22Variations in H1 Tags   Relevancy-0.193148 %87 %
23Entities in H1 Tags-0.195250 %91 %
24Variations in the Canonical URL   Relevancy-0.196243 %87 %
25Variations in Div Tags   Relevancy-0.1934310869 %93 %
26Variations in P Tags   Relevancy-0.192002857 %92 %
27Variations in Search Result Display URL   Relevancy-0.193272 %78 %
28Variations in Search Result Link Text   Relevancy-0.193272 %78 %
29Leading Variations in H1, H2, and H3 Tags   Relevancy-0.194134 %87 %
30Term Frequency   Relevancy-0.194373 %90 %
31Variations in Search Result URL Path   Relevancy-0.183142 %85 %
32Variations in A Tags   Relevancy-0.18742156 %89 %
33Variations in the Title Tag   Relevancy-0.183262 %87 %
34Variations in LI Tags   Relevancy-0.18581858 %92 %
35Word Count   Size-0.182849148781 %88 %
36Number of Images with ALT Text   Size-0.18772063 %87 %
37Number of HTML Tags   Size-0.182647101780 %84 %
38Variation Count in Top 30KB   Relevancy-0.18811858 %84 %
39Number of Heading Tags   Size-0.18512167 %86 %
40Unabridged Word Count   Size-0.183483189381 %89 %
41Variations in A Tag HREF Attributes   Relevancy-0.181574252 %91 %
42Number of P Tags   Size-0.18934165 %88 %
43Number of H2 Tags   Size-0.1813760 %89 %
44Clean Text Kilobytes   Size-0.17271366 %88 %
45Variations in Sentences   Relevancy-0.171723365 %93 %
46Entities in the HTML Tag   Relevancy-0.1745116666 %99 %
47Entities in Sentences   Relevancy-0.1744916461 %99 %
48Variations in Absolute URLs   Relevancy-0.172085752 %92 %
49Variations in Distinct A Tag HREF Attributes   Relevancy-0.171162751 %91 %
50Number of HTTPS Links   Authority-0.1740813673 %89 %
51Entities in H2 Tags-0.1727847 %95 %
52Variations in Span Tags   Relevancy-0.1724945 %86 %
53Number of Links   Authority-0.1740813874 %89 %
54Variations in ALT Attributes   Relevancy-0.1753742 %86 %
55Number of DoFollow Links   Authority-0.1740213474 %89 %
56Number of Referring Domains   Authority-0.175778345 %75 %
57Number of Backlinks   Authority-0.1719454224690045 %79 %
58Variations in OpenGraph Title   Relevancy-0.172151 %80 %
59Number of Internal Links   Authority-0.1739912372 %87 %
60Variations in H2 Tags   Relevancy-0.178338 %88 %
61Number of Do Follow Backlinks   Authority-0.1719453744526141 %75 %
62Variations in Meta Description   Relevancy-0.174251 %82 %
63Variations in First 100 Words   Relevancy-0.1717560 %87 %
64TF/IDF   Relevancy-0.171152 %88 %
65Variations in Search Result URL   Relevancy-0.173147 %84 %
66LSI Words in Meta Description Tag   Relevancy-0.17231260 %91 %
67Number of Images   Size-0.171032867 %88 %
68LSI Words in H2 Tags   Relevancy-0.17752555 %95 %
69Variations in OpenGraph Description   Relevancy-0.163244 %77 %
70Variations in Script Tags   Relevancy-0.164776658 %81 %
71Number of Forms   Technology-0.168248 %70 %
72Leading Variations in Title Tag   Relevancy-0.161124 %82 %
73Entities in H3 Tags-0.1620739 %95 %
74Number of No Follow Backlinks   Authority-0.16328486395937 %68 %
75Variations in Main Tags   Relevancy-0.161715233 %88 %
76Exact Matches in the HTML Tag   Relevancy-0.161871332 %86 %
77Number of External Links   Authority-0.16301571 %88 %
78Number of DoFollow External Links   Authority-0.16291371 %86 %
79Clean Keyword Density in the HTML Tag   Relevancy-0.167364 %78 %
80Variations in Nav Tags   Relevancy-0.161282541 %90 %
81Variation Density in Top 30KB   Relevancy-0.167255 %86 %
82Number of US Phone Numbers   Trust-0.16891345 %86 %
83Number of H1 Tags   Size-0.162163 %88 %
84Average Words Per Sentence   Size-0.161223170 %81 %
85Number of H3 Tags   Size-0.1615851 %82 %
86LSI Words in H3 Tags   Relevancy-0.16632547 %87 %
87Number of CSS Includes   Technology-0.1617968 %74 %
88Number of Facebook Pages   Authority-0.166253 %86 %
89Number of Includes   Technology-0.15492676 %74 %
90Has US Phone Number   Trust-0.151143 %80 %
91Number Of JSON-LD Types   Relevancy-0.15541550 %88 %
92Has Form   Technology-0.151148 %74 %
93Entities in Meta Description Tag   Relevancy-0.158455 %87 %
94Number of HTML Comments   Size-0.151884562 %81 %
95Leading Variations in H1 Tags   Relevancy-0.151120 %87 %
96Variations in Section Tags   Relevancy-0.15411533 %85 %
97Percentage of DoFollow Links   Authority-0.15988074 %86 %
98Variations in H3 Tags   Relevancy-0.159329 %84 %
99Has JSON-LD Schema Markup   Relevancy-0.151149 %86 %
100Number of H4 Tags   Size-0.1527431 %80 %
101Has Entities in H2 Tags   Relevancy-0.151147 %89 %
102Uses Schema product   Other-0.15119 %51 %
103Search Result Uses HTTPS   Other-0.151180 %79 %
104Flesch Kincaid Reading Grade Level   Other-0.156288 %85 %
105Uses JSON-LD name   Other-0.151148 %81 %
106Number of Sentences   Size-0.1552714378 %85 %
107Has Entities in H1 Tags   Relevancy-0.141150 %91 %
108Has Privacy Policy   Trust-0.141156 %78 %
109Search Result Number of Dirs in Path   Other-0.143273 %80 %
110Has Canonical URL   Authority-0.141167 %80 %
111Percentage of DoFollow Internal Links   Authority-0.14877073 %86 %
112Number of Absolute URLs   Authority-0.1492728279 %79 %
113Has Meta Twitter Card   Authority-0.141147 %58 %
114Exact Matches in Sentences   Relevancy-0.1435422 %86 %
115Has Meta Robots   Other-0.141120 %77 %
116Uses JSON-LD description   Other-0.141140 %69 %
117Number of Questions In Headings   Size-0.146233 %85 %
118Entities in H4 Tags-0.1413318 %87 %
119Word Count in Meta Description   Size-0.14322065 %70 %
120Number of Images without ALT Text   Size-0.1430852 %84 %
121Has Schema Markup   Relevancy-0.141159 %73 %
122Exact Matches in H1-H6 Tags   Relevancy-0.147121 %86 %
123Meta Description Length   Size-0.1419612065 %70 %
124Title Length   Size-0.14805478 %68 %
125Leading Variations in H2 Tags   Relevancy-0.143117 %84 %
126Variations in Meta Twitter Content   Relevancy-0.142124 %64 %
127Has Google Verify   Technology-0.141118 %66 %
128Uses JSON-LD url   Other-0.141143 %77 %
129Variations in Footer Tags   Relevancy-0.1425733 %87 %
130Variations in TITLE Attributes   Relevancy-0.1437635 %75 %
131Uses JSON-LD Product   Other-0.13118 %53 %
132Has Contact Page   Trust-0.131163 %71 %
133Title Word Count   Size-0.1312979 %73 %
134Title Tag Has Entities   Relevancy-0.131161 %87 %
135Number of Nofollow Links   Authority-0.1318422 %84 %
136Search Result Domain Length   Size-0.13221781 %78 %
137Search Result Host Length   Size-0.13221781 %78 %
138Uses JSON-LD MerchantReturnPolicy   Other-0.13113 %14 %
139Uses Schema merchantreturnpolicy   Other-0.13113 %14 %
140LSI Words in H4 Tags   Relevancy-0.1353827 %85 %
141Variations Making Whole Span Tags   Relevancy-0.133114 %86 %
142Has Meta Charset   Technology-0.131165 %84 %
143Number of Questions   Size-0.13351263 %76 %
144Number of JavaScript Includes   Technology-0.13401875 %75 %
145Is Home Page   Other-0.131112 %43 %
146Percentage of NoFollow Links   Authority-0.137220 %80 %
147Uses Schema name   Other-0.131157 %73 %
148Variations in Strong Tags   Relevancy-0.139224 %79 %
149Has Entities in H3 Tags   Relevancy-0.131139 %86 %
150Uses Schema description   Other-0.131146 %65 %
151Variations in Meta Twitter Description   Relevancy-0.132122 %73 %
152Uses Schema url   Other-0.131153 %67 %
153Variations Making Whole LI Tags   Relevancy-0.132118 %77 %
154Exact Matches in Title Tag   Relevancy-0.132118 %84 %
155Number of Facebook Accounts   Authority-0.133126 %77 %
156Percentage of DoFollow External Links   Authority-0.13201270 %77 %
157Has OpenGraph Type   Relevancy-0.131158 %66 %
158Variations in Figure Tags   Relevancy-0.1344611 %81 %
159Uses JSON-LD BreadcrumbList   Other-0.131131 %85 %
160Number of LinkedIn Pages   Authority-0.132129 %79 %
161Uses Schema person   Other-0.131126 %40 %
162Exact Matches in Top 30KB   Relevancy-0.138217 %79 %
163Uses JSON-LD ListItem   Other-0.131131 %85 %
164Number of Social Accounts   Authority-0.137239 %89 %
165Uses Schema localbusiness   Other-0.13117 %53 %
166Inline CSS Kilobytes   Size-0.131226164 %84 %
167Has Meta Viewport   Technology-0.131177 %78 %
168Headings Has Question   Other-0.131133 %88 %
169Uses Schema listitem   Other-0.131140 %70 %
170Uses Schema pricecurrency   Other-0.13116 %53 %
171Uses Schema pricespecification   Other-0.13111 %19 %
172Variations making whole H1-H6 Tags   Relevancy-0.131111 %75 %
173Uses Schema website   Other-0.131128 %59 %
174Percentage of NoFollow Internal Links   Authority-0.135112 %77 %
175Uses JSON-LD datePublished   Other-0.131130 %63 %
176Uses JSON-LD Thing   Other-0.13113 %42 %
177Variations in Button Tags   Relevancy-0.131729 %78 %
178Uses Schema availability   Other-0.13114 %48 %
179Has Meta Description   Relevancy-0.131164 %75 %
180Has Entities in H4 Tags   Relevancy-0.121118 %81 %
181Variations in the last 100 words   Relevancy-0.129340 %80 %
182Percentage of NoFollow External Links   Authority-0.127214 %71 %
183Variations in I Tags   Relevancy-0.1210319 %79 %
184Uses Schema item   Other-0.121129 %56 %
185Leading Variations in H3 Tags   Relevancy-0.122112 %79 %
186Uses Schema offer   Other-0.12117 %59 %
187Uses Schema breadcrumblist   Other-0.121140 %71 %
188Number of NoFollow External Links   Authority-0.1213216 %78 %
189Number of Questions In H2 Tags   Size-0.124123 %81 %
190Number Of Claimed Brands   Other-0.1215324 %80 %
191Uses RDFa BreadcrumbList   Other-0.12112 %12 %
192Number of Email Addresses   Trust-0.1258536 %80 %
193Uses JSON-LD dateModified   Other-0.121127 %64 %
194Variations in H4-H6 Tags   Relevancy-0.129115 %81 %
195Variations in B Tags   Relevancy-0.1219211 %75 %
196Variations in H4 Tags   Relevancy-0.127111 %81 %
197Variations in ID Attributes   Relevancy-0.127110 %84 %
198Number of YouTube Accounts   Technology-0.12219 %73 %
199Uses JSON-LD inLanguage   Other-0.121125 %65 %
200Has OpenGraph Image   Relevancy-0.121153 %63 %