Measures 150356 SEO Factors

148634 Built-In SEO Factors

139432 On-page SEO Factors

9202 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-0.2389730079 %86 %
2Number of Unique Variations Used   Diversity-0.2320674 %89 %
3Number of Top 50 Shared Factors Used   Diversity-0.23161293 %92 %
4Load Time Milliseconds   Performance-0.2214022150181 %91 %
5Number of Top 200 Shared Factors Used   Diversity-0.22503794 %94 %
6Number of Top 100 Shared Factors Used   Diversity-0.22372895 %94 %
7Search Result Domain is .com, .net, or .org   Other-0.21116 %78 %
8Variations in Search Result Display URL   Relevancy-0.213274 %81 %
9Variations in Search Result Link Text   Relevancy-0.213274 %81 %
10Variations in H1, H2, and H3 Tags   Relevancy-0.217554 %89 %
11Search Result Domain is .com   Other-0.2115 %77 %
12Variations in H1 and H2 Tags   Relevancy-0.210352 %90 %
13Variations in H1-H6 Tags   Relevancy-0.228655 %89 %
14Number of Distinct Entities Used   Diversity-0.2602873 %95 %
15Entities in Title Tag   Relevancy-0.27360 %93 %
16Variations in Body Tags   Relevancy-0.2111318572 %89 %
17Variations in HTML Tags   Relevancy-0.2111318371 %90 %
18LSI Words in Sentences   Relevancy-0.19303381564 %94 %
19Number of Factors Used   Diversity-0.1926616794 %93 %
20Variations in P Tags   Relevancy-0.192002657 %93 %
21Entities in Sentences   Relevancy-0.1944914262 %96 %
22Leading Variations in H1-H6 Tags   Relevancy-0.197236 %87 %
23Variations in Search Result Document File Name   Relevancy-0.193139 %86 %
24Entities in the HTML Tag   Relevancy-0.1945114567 %96 %
25Variations in Div Tags   Relevancy-0.194739467 %92 %
26Variations in H1 Tags   Relevancy-0.193147 %86 %
27Term Frequency   Relevancy-0.194371 %88 %
28Entities in H2 Tags-0.1927745 %94 %
29Variation Count in Top 30KB   Relevancy-0.18811858 %86 %
30Entities in H1 Tags-0.185247 %92 %
31Variations in the Title Tag   Relevancy-0.183159 %86 %
32Variations in Sentences   Relevancy-0.181723063 %90 %
33Leading Variations in H1, H2, and H3 Tags   Relevancy-0.187134 %89 %
34LSI Words in H1 Tags   Relevancy-0.1814555 %92 %
35LSI Words in Title Tag   Relevancy-0.1814669 %90 %
36Word Count   Size-0.184223147480 %89 %
37Number of Includes   Technology-0.18492474 %76 %
38Variations in LI Tags   Relevancy-0.18761756 %92 %
39Unabridged Word Count   Size-0.188545220980 %89 %
40Variations in Meta Description   Relevancy-0.184248 %82 %
41Variations in Search Result URL Path   Relevancy-0.183141 %85 %
42Variations in A Tags   Relevancy-0.17761856 %91 %
43Clean Text Kilobytes   Size-0.17491566 %88 %
44Number of HTML Tags   Size-0.172713100180 %84 %
45Variations in H2 Tags   Relevancy-0.179337 %89 %
46Variations in ALT Attributes   Relevancy-0.1753639 %82 %
47Number of Images with ALT Text   Size-0.17772062 %85 %
48Entities in H3 Tags-0.1728637 %95 %
49Leading Variations in Title Tag   Relevancy-0.171126 %80 %
50Variations in the Canonical URL   Relevancy-0.176141 %88 %
51Variations in OpenGraph Title   Relevancy-0.172149 %79 %
52Variations in Span Tags   Relevancy-0.1724843 %86 %
53TF/IDF   Relevancy-0.171150 %86 %
54Number of Facebook Pages   Authority-0.176250 %83 %
55Has JSON-LD Schema Markup   Relevancy-0.171146 %84 %
56LSI Words in H2 Tags   Relevancy-0.17962153 %93 %
57Number of P Tags   Size-0.16983665 %87 %
58Clean Keyword Density in the HTML Tag   Relevancy-0.168363 %83 %
59Number of Images   Size-0.161032767 %88 %
60Variation Density in Top 30KB   Relevancy-0.167254 %84 %
61Variations in Search Result URL   Relevancy-0.163148 %82 %
62Number of Heading Tags   Size-0.16532067 %85 %
63Leading Variations in H1 Tags   Relevancy-0.161122 %86 %
64Exact Matches in the HTML Tag   Relevancy-0.164321327 %84 %
65Number of CSS Includes   Technology-0.1617868 %79 %
66Variations in OpenGraph Description   Relevancy-0.163143 %81 %
67Search Result Number of Dirs in Path   Other-0.163273 %77 %
68Variations in Absolute URLs   Relevancy-0.162084550 %90 %
69Variations in A Tag HREF Attributes   Relevancy-0.161573349 %90 %
70Variations in Main Tags   Relevancy-0.162735234 %87 %
71Number of HTTPS Links   Authority-0.1660014073 %88 %
72Variations in Distinct A Tag HREF Attributes   Relevancy-0.161162149 %90 %
73Number of H2 Tags   Size-0.1616760 %89 %
74Number of Links   Authority-0.1660114173 %88 %
75Number of H1 Tags   Size-0.162162 %91 %
76Has Entities in H1 Tags   Relevancy-0.161148 %88 %
77Entities in Meta Description Tag   Relevancy-0.168351 %87 %
78Number of DoFollow Links   Authority-0.1659213873 %88 %
79Variations in Script Tags   Relevancy-0.164775256 %80 %
80Number of Internal Links   Authority-0.1659512872 %88 %
81Variations in Nav Tags   Relevancy-0.161682038 %86 %
82Flesch Kincaid Reading Grade Level   Other-0.166191 %88 %
83Number of Questions In Headings   Size-0.1610231 %81 %
84LSI Words in Meta Description Tag   Relevancy-0.15301156 %88 %
85Number of Referring Domains   Authority-0.1530409744 %76 %
86Variations in First 100 Words   Relevancy-0.1517558 %89 %
87Variations in Section Tags   Relevancy-0.15551533 %86 %
88Number of Backlinks   Authority-0.1519454221965344 %78 %
89Average Words Per Sentence   Size-0.151493271 %82 %
90Has Entities in H2 Tags   Relevancy-0.151146 %90 %
91Number of Forms   Technology-0.159247 %74 %
92Number of No Follow Backlinks   Authority-0.15328486205034 %68 %
93Search Result Domain Length   Size-0.15221680 %83 %
94Search Result Host Length   Size-0.15221680 %83 %
95Search Result Uses HTTPS   Other-0.151179 %82 %
96Variations in H3 Tags   Relevancy-0.1511228 %85 %
97Number of Sentences   Size-0.1566013277 %82 %
98Number of Do Follow Backlinks   Authority-0.1519453741833540 %76 %
99Leading Variations in H2 Tags   Relevancy-0.154117 %84 %
100Number of H3 Tags   Size-0.1528851 %82 %
101Percentage of DoFollow Links   Authority-0.15987974 %87 %
102Percentage of DoFollow Internal Links   Authority-0.15916873 %86 %
103Number Of JSON-LD Types   Relevancy-0.142291649 %87 %
104Number of Absolute URLs   Authority-0.1492726478 %76 %
105Exact Matches in Sentences   Relevancy-0.1437421 %85 %
106Headings Has Question   Other-0.141130 %80 %
107Number of DoFollow External Links   Authority-0.14291369 %82 %
108Has Meta Charset   Technology-0.141166 %81 %
109Number of External Links   Authority-0.14311470 %84 %
110Title Tag Has Entities   Relevancy-0.141160 %85 %
111LSI Words in H3 Tags   Relevancy-0.141062144 %89 %
112Number of JavaScript Includes   Technology-0.14401776 %70 %
113Number of HTML Comments   Size-0.142334063 %85 %
114Number of H4 Tags   Size-0.1427431 %78 %
115Number of Facebook Accounts   Authority-0.143124 %76 %
116Has Privacy Policy   Trust-0.141153 %78 %
117Number of Images without ALT Text   Size-0.1437851 %84 %
118Uses Schema name   Other-0.141155 %67 %
119Has Canonical URL   Authority-0.141165 %77 %
120Uses JSON-LD name   Other-0.141146 %80 %
121Entities in H4 Tags-0.1414217 %90 %
122Has Form   Technology-0.141147 %73 %
123Title Length   Size-0.141075278 %71 %
124Variations in Strong Tags   Relevancy-0.1410222 %81 %
125Variations making whole H1-H6 Tags   Relevancy-0.141112 %78 %
126Has Meta Viewport   Technology-0.141177 %76 %
127Meta Description Length   Size-0.1420711962 %73 %
128Has Schema Markup   Relevancy-0.141159 %72 %
129Title Word Count   Size-0.1318877 %74 %
130Variations Making Whole LI Tags   Relevancy-0.134118 %80 %
131Number of LinkedIn Pages   Authority-0.132128 %82 %
132Variations in Footer Tags   Relevancy-0.1362629 %86 %
133Word Count in Meta Description   Size-0.13391962 %72 %
134Number of Questions In H2 Tags   Size-0.134121 %82 %
135Search Result URL Length   Size-0.13946494 %57 %
136Page Size Kilobytes   Size-0.13103733379 %65 %
137Has US Phone Number   Trust-0.131137 %73 %
138Number of Instagram Pages   Authority-0.1317238 %73 %
139Number of US Phone Numbers   Trust-0.13116937 %83 %
140Variations Making Whole Span Tags   Relevancy-0.139115 %83 %
141Number of Social Pages   Authority-0.1320457 %76 %
142Variations in I Tags   Relevancy-0.1314319 %81 %
143Inline CSS Kilobytes   Size-0.132075362 %84 %
144Exact Matches in H1-H6 Tags   Relevancy-0.1313118 %86 %
145Has Contact Page   Trust-0.131157 %74 %
146Number of Nofollow Links   Authority-0.1318422 %80 %
147Uses JSON-LD description   Other-0.131139 %71 %
148Uses JSON-LD url   Other-0.131140 %78 %
149Has Meta Twitter Card   Authority-0.131149 %60 %
150Exact Matches in Title Tag   Relevancy-0.132115 %81 %
151Variations making whole H1, H2, and H3 Tags   Relevancy-0.131110 %80 %
152Has Entities in H3 Tags   Relevancy-0.131138 %84 %
153Has Meta Robots   Other-0.131122 %73 %
154Number of Questions   Size-0.13651261 %74 %
155Percentage of NoFollow Links   Authority-0.1315220 %76 %
156Has OpenGraph Type   Relevancy-0.131156 %67 %
157Uses Schema url   Other-0.131151 %65 %
158Uses JSON-LD datePublished   Other-0.131129 %64 %
159Exact Matches in Top 30KB   Relevancy-0.1312215 %81 %
160Uses Microdata FAQPage   Other-0.13114 %22 %
161Uses Microdata acceptedAnswer   Other-0.13114 %26 %
162Uses Schema acceptedanswer   Other-0.13114 %26 %
163Search Result Summary Length   Size-0.1216315294 %71 %
164Uses JSON-LD ImageObject   Other-0.121129 %63 %
165Number of Social Accounts   Authority-0.127238 %84 %
166Variations making whole A Tags   Relevancy-0.124123 %81 %
167Uses Schema product   Other-0.12119 %41 %
168LSI Words in H4 Tags   Relevancy-0.1253726 %83 %
169Is Home Page   Other-0.121113 %38 %
170Uses Schema website   Other-0.121128 %60 %
171Uses Microdata Answer   Other-0.12114 %27 %
172Has Meta Description   Relevancy-0.121161 %72 %
173Number Of Claimed Brands   Other-0.1215221 %76 %
174Has FavIcon   Technology-0.121169 %67 %
175Is Article Page   Other-0.121139 %69 %
176Uses Microdata Question   Other-0.12114 %27 %
177Number of Email Addresses   Trust-0.1258437 %79 %
178Uses Microdata mainEntity   Other-0.12114 %27 %
179Meta Description Tag Has Entities   Relevancy-0.121151 %79 %
180Uses JSON-LD Product   Other-0.12118 %45 %
181Number of HREF Lang Tags   Size-0.1257312 %73 %
182Uses JSON-LD ListItem   Other-0.121131 %76 %
183Percentage of DoFollow External Links   Authority-0.12241268 %81 %
184Uses Schema datemodified   Other-0.121127 %59 %
185Number of Prices   Size-0.1236410364 %78 %
186Is OpenGraph Type Article   Technology-0.121129 %65 %
187Variations in B Tags   Relevancy-0.1219210 %74 %
188Percentage of NoFollow Internal Links   Authority-0.126112 %73 %
189Uses Schema listitem   Other-0.121138 %66 %
190Is Pagination Page   Other-0.121116 %66 %
191Uses JSON-LD dateModified   Other-0.121126 %63 %
192Number of Questions In H3 Tags   Size-0.127115 %78 %
193Uses JSON-LD BreadcrumbList   Other-0.121130 %75 %
194Uses Schema pricespecification   Other-0.12111 %12 %
195Variations in Meta Twitter Description   Relevancy-0.122121 %69 %
196Uses Schema description   Other-0.121144 %65 %
197Uses Schema breadcrumblist   Other-0.121137 %65 %
198Uses JSON-LD WebSite-0.121125 %69 %
199Variations in Meta Twitter Content   Relevancy-0.122123 %65 %
200Uses Schema faqpage   Other-0.12119 %54 %