Measures 150227 SEO Factors

148505 Built-In SEO Factors

139304 On-page SEO Factors

9201 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 Unique LSI Words Used   Diversity-0.2389730979 %87 %
2Number of Unique Variations Used   Diversity-0.2220775 %89 %
3Number of Top 50 Shared Factors Used   Diversity-0.22151293 %92 %
4Load Time Milliseconds   Performance-0.228900142582 %90 %
5Number of Top 100 Shared Factors Used   Diversity-0.22372895 %94 %
6Number of Top 200 Shared Factors Used   Diversity-0.21503795 %95 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %79 %
8Variations in H1, H2, and H3 Tags   Relevancy-0.217555 %88 %
9Search Result Domain is .com   Other-0.2115 %78 %
10Variations in H1 and H2 Tags   Relevancy-0.210353 %91 %
11Variations in H1-H6 Tags   Relevancy-0.228656 %89 %
12Entities in Title Tag   Relevancy-0.27361 %94 %
13Variations in Search Result Display URL   Relevancy-0.23273 %83 %
14Variations in Search Result Link Text   Relevancy-0.23273 %83 %
15Number of Factors Used   Diversity-0.1926616895 %93 %
16Number of Distinct Entities Used   Diversity-0.19602872 %95 %
17Variations in Body Tags   Relevancy-0.19111319172 %90 %
18Variations in HTML Tags   Relevancy-0.19111318972 %91 %
19Variations in Search Result Document File Name   Relevancy-0.193140 %87 %
20Entities in H1 Tags-0.195248 %92 %
21LSI Words in Sentences   Relevancy-0.19303382664 %95 %
22Variations in H1 Tags   Relevancy-0.193147 %87 %
23Variations in Div Tags   Relevancy-0.184739668 %93 %
24Entities in Sentences   Relevancy-0.1844914662 %96 %
25Leading Variations in H1-H6 Tags   Relevancy-0.185236 %87 %
26Entities in the HTML Tag   Relevancy-0.1845115067 %97 %
27Variation Count in Top 30KB   Relevancy-0.18811958 %86 %
28Variations in P Tags   Relevancy-0.182002758 %94 %
29Variations in the Title Tag   Relevancy-0.183259 %86 %
30Term Frequency   Relevancy-0.184372 %88 %
31Variations in Search Result URL Path   Relevancy-0.183142 %85 %
32Entities in H2 Tags-0.1827746 %94 %
33LSI Words in H1 Tags   Relevancy-0.1814555 %93 %
34Leading Variations in H1, H2, and H3 Tags   Relevancy-0.184134 %88 %
35Variations in Sentences   Relevancy-0.181723164 %90 %
36Variations in LI Tags   Relevancy-0.18761757 %93 %
37Variations in the Canonical URL   Relevancy-0.186242 %88 %
38Word Count   Size-0.182908147781 %89 %
39Unabridged Word Count   Size-0.188545214481 %89 %
40LSI Words in Title Tag   Relevancy-0.1814669 %92 %
41Number of HTML Tags   Size-0.172713100881 %83 %
42Variations in A Tags   Relevancy-0.17741856 %90 %
43Number of Images with ALT Text   Size-0.17772163 %85 %
44Variations in Meta Description   Relevancy-0.174249 %82 %
45Clean Text Kilobytes   Size-0.17491467 %88 %
46Variations in ALT Attributes   Relevancy-0.1753640 %81 %
47Variations in Span Tags   Relevancy-0.1724843 %85 %
48Variations in H2 Tags   Relevancy-0.179338 %88 %
49Leading Variations in Title Tag   Relevancy-0.171125 %80 %
50Entities in H3 Tags-0.1728738 %94 %
51Number of Includes   Technology-0.17492576 %75 %
52Number of Images   Size-0.161032868 %87 %
53Number of P Tags   Size-0.16973766 %88 %
54TF/IDF   Relevancy-0.161150 %87 %
55Variations in Absolute URLs   Relevancy-0.162084651 %91 %
56Variations in A Tag HREF Attributes   Relevancy-0.161573551 %91 %
57Variations in Search Result URL   Relevancy-0.163149 %83 %
58Number of Heading Tags   Size-0.16512067 %84 %
59Variations in Distinct A Tag HREF Attributes   Relevancy-0.161162350 %91 %
60Number of HTTPS Links   Authority-0.1660014074 %89 %
61Variations in OpenGraph Title   Relevancy-0.162149 %79 %
62Number of Links   Authority-0.1660114174 %89 %
63Number of Internal Links   Authority-0.1659512773 %88 %
64Number of DoFollow Links   Authority-0.1659213874 %89 %
65LSI Words in H2 Tags   Relevancy-0.16962253 %93 %
66Clean Keyword Density in the HTML Tag   Relevancy-0.167364 %82 %
67Has Entities in H1 Tags   Relevancy-0.161148 %88 %
68Number of Facebook Pages   Authority-0.166252 %83 %
69Number of H2 Tags   Size-0.1616761 %89 %
70Has JSON-LD Schema Markup   Relevancy-0.161147 %84 %
71Leading Variations in H1 Tags   Relevancy-0.161122 %87 %
72Variation Density in Top 30KB   Relevancy-0.167254 %84 %
73Number of Referring Domains   Authority-0.16304010044 %76 %
74Number of H1 Tags   Size-0.162163 %91 %
75Entities in Meta Description Tag   Relevancy-0.168353 %87 %
76Exact Matches in the HTML Tag   Relevancy-0.164321229 %85 %
77Variations in First 100 Words   Relevancy-0.1617559 %89 %
78Search Result Number of Dirs in Path   Other-0.163274 %77 %
79Variations in Script Tags   Relevancy-0.154775357 %80 %
80Variations in OpenGraph Description   Relevancy-0.153143 %82 %
81Number of Backlinks   Authority-0.1519454222260444 %79 %
82Variations in Nav Tags   Relevancy-0.151682239 %86 %
83Number of CSS Includes   Technology-0.1517970 %78 %
84Variations in Main Tags   Relevancy-0.152735134 %88 %
85Average Words Per Sentence   Size-0.151493271 %83 %
86Number of DoFollow External Links   Authority-0.15291370 %82 %
87Number of Questions In Headings   Size-0.156232 %80 %
88Flesch Kincaid Reading Grade Level   Other-0.156191 %87 %
89Number of Do Follow Backlinks   Authority-0.1519453742116540 %77 %
90Number of Forms   Technology-0.159248 %73 %
91Number of External Links   Authority-0.15311470 %85 %
92LSI Words in Meta Description Tag   Relevancy-0.15231157 %89 %
93Number Of JSON-LD Types   Relevancy-0.152291750 %89 %
94Number of H3 Tags   Size-0.1528851 %81 %
95Variations in Section Tags   Relevancy-0.15551533 %87 %
96Number of No Follow Backlinks   Authority-0.15328486212033 %70 %
97Percentage of DoFollow Links   Authority-0.14987974 %87 %
98Has Entities in H2 Tags   Relevancy-0.141147 %89 %
99Number of Sentences   Size-0.1466013677 %83 %
100Percentage of DoFollow Internal Links   Authority-0.14876973 %87 %
101Number of Absolute URLs   Authority-0.1492726778 %77 %
102Leading Variations in H2 Tags   Relevancy-0.143117 %82 %
103Search Result Domain Length   Size-0.14221681 %81 %
104Search Result Host Length   Size-0.14221681 %81 %
105Has Meta Charset   Technology-0.141166 %81 %
106Number of HTML Comments   Size-0.142334163 %83 %
107Uses JSON-LD name   Other-0.141147 %80 %
108Search Result Uses HTTPS   Other-0.141180 %81 %
109Variations in H3 Tags   Relevancy-0.1411228 %85 %
110Title Tag Has Entities   Relevancy-0.141161 %86 %
111Uses Schema name   Other-0.141156 %69 %
112Has Form   Technology-0.141148 %73 %
113Number of H4 Tags   Size-0.1427431 %79 %
114Headings Has Question   Other-0.141131 %80 %
115Exact Matches in Sentences   Relevancy-0.1435321 %85 %
116Has Canonical URL   Authority-0.141166 %77 %
117LSI Words in H3 Tags   Relevancy-0.14682144 %89 %
118Number of Images without ALT Text   Size-0.1437851 %85 %
119Has Privacy Policy   Trust-0.141154 %80 %
120Has Schema Markup   Relevancy-0.141159 %74 %
121Has US Phone Number   Trust-0.141139 %76 %
122Variations in Footer Tags   Relevancy-0.1462631 %86 %
123Entities in H4 Tags-0.1413217 %88 %
124Word Count in Meta Description   Size-0.14331963 %72 %
125Variations Making Whole LI Tags   Relevancy-0.144119 %80 %
126Number of JavaScript Includes   Technology-0.14401776 %72 %
127Number of US Phone Numbers   Trust-0.1489939 %86 %
128Number of Facebook Accounts   Authority-0.143125 %75 %
129Meta Description Length   Size-0.1419811963 %73 %
130Uses JSON-LD description   Other-0.131139 %72 %
131Variations in I Tags   Relevancy-0.1310319 %80 %
132Has Meta Robots   Other-0.131122 %73 %
133Title Length   Size-0.13815278 %72 %
134Uses JSON-LD url   Other-0.131140 %77 %
135Has Meta Viewport   Technology-0.131177 %76 %
136Number of Questions In H2 Tags   Size-0.134122 %80 %
137Variations in Strong Tags   Relevancy-0.1310223 %80 %
138Exact Matches in H1-H6 Tags   Relevancy-0.139119 %86 %
139Has Meta Twitter Card   Authority-0.131149 %60 %
140Uses Schema url   Other-0.131151 %67 %
141Variations making whole H1-H6 Tags   Relevancy-0.131111 %77 %
142Number of LinkedIn Pages   Authority-0.132130 %82 %
143Uses Schema product   Other-0.13119 %41 %
144Has Entities in H3 Tags   Relevancy-0.131139 %85 %
145Search Result URL Length   Size-0.13916495 %56 %
146Variations Making Whole Span Tags   Relevancy-0.134115 %84 %
147Number of Nofollow Links   Authority-0.1318422 %80 %
148Number of Social Pages   Authority-0.1320458 %76 %
149Title Word Count   Size-0.1312878 %74 %
150Number of Social Accounts   Authority-0.137239 %85 %
151Percentage of NoFollow Links   Authority-0.1315220 %76 %
152Exact Matches in Title Tag   Relevancy-0.132116 %82 %
153Variations making whole H1, H2, and H3 Tags   Relevancy-0.131110 %80 %
154Has Contact Page   Trust-0.131158 %75 %
155Uses Microdata acceptedAnswer   Other-0.13114 %25 %
156Uses Schema acceptedanswer   Other-0.13114 %25 %
157Is Home Page   Other-0.131112 %38 %
158Uses Microdata FAQPage   Other-0.13114 %21 %
159Inline CSS Kilobytes   Size-0.132075463 %82 %
160Percentage of DoFollow External Links   Authority-0.13231169 %81 %
161Number of Instagram Pages   Authority-0.1317239 %72 %
162Page Size Kilobytes   Size-0.13103734180 %66 %
163Has Meta Description   Relevancy-0.131162 %74 %
164LSI Words in H4 Tags   Relevancy-0.1253726 %83 %
165Uses JSON-LD Product   Other-0.12119 %44 %
166Number of Questions   Size-0.12651262 %75 %
167Uses Microdata Answer   Other-0.12114 %26 %
168Has OpenGraph Type   Relevancy-0.121157 %67 %
169Uses JSON-LD ImageObject   Other-0.121129 %64 %
170Uses JSON-LD datePublished   Other-0.121129 %64 %
171Uses Microdata mainEntity   Other-0.12114 %25 %
172Search Result Summary Length   Size-0.1216115294 %72 %
173Variations in Meta Twitter Description   Relevancy-0.122122 %69 %
174Exact Matches in Top 30KB   Relevancy-0.1212215 %80 %
175Is Article Page   Other-0.121140 %71 %
176Variations in Meta Twitter Content   Relevancy-0.122124 %66 %
177Uses Schema organization   Other-0.121132 %68 %
178Uses Microdata Question   Other-0.12114 %26 %
179Variations making whole A Tags   Relevancy-0.124123 %81 %
180Uses Schema website   Other-0.121128 %61 %
181Uses Schema description   Other-0.121145 %67 %
182Number Of Claimed Brands   Other-0.1215223 %76 %
183Uses JSON-LD Organization   Other-0.121129 %71 %
184Meta Description Tag Has Entities   Relevancy-0.121152 %79 %
185Uses JSON-LD inLanguage   Other-0.121125 %62 %
186Uses Schema listitem   Other-0.121138 %68 %
187Uses JSON-LD ListItem   Other-0.121131 %78 %
188Has Google Verify   Technology-0.121119 %68 %
189Uses Schema datemodified   Other-0.121128 %60 %
190Percentage of NoFollow Internal Links   Authority-0.126112 %74 %
191Uses JSON-LD BreadcrumbList   Other-0.121130 %77 %
192Number of Email Addresses   Trust-0.1258437 %78 %
193Uses Schema inlanguage   Other-0.121125 %59 %
194Uses JSON-LD dateModified   Other-0.121127 %64 %
195Variations in B Tags   Relevancy-0.1219210 %73 %
196Number of HREF Lang Tags   Size-0.1257311 %72 %
197Uses Schema breadcrumblist   Other-0.121138 %67 %
198Uses Schema pricespecification   Other-0.12111 %12 %
199Is Pagination Page   Other-0.121116 %66 %
200Has FavIcon   Technology-0.121169 %66 %