Measures 143949 SEO Factors

142227 Built-In SEO Factors

133114 On-page SEO Factors

9113 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 2025-10     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-0.25100232879 %82 %
2Load Time Milliseconds   Performance-0.239090196681 %92 %
3Number of Distinct Entities Used   Diversity-0.23732975 %95 %
4Number of Unique Variations Used   Diversity-0.2238774 %88 %
5Number of Top 50 Shared Factors Used   Diversity-0.22161294 %91 %
6Number of Top 100 Shared Factors Used   Diversity-0.22392996 %92 %
7Search Result Domain is .com, .net, or .org   Other-0.22115 %72 %
8Number of Top 200 Shared Factors Used   Diversity-0.22523896 %92 %
9Entities in Title Tag   Relevancy-0.227366 %92 %
10Number of Includes   Technology-0.21612775 %79 %
11Search Result Domain is .com   Other-0.2114 %71 %
12Variations in Div Tags   Relevancy-0.24668025470 %87 %
13Entities in the HTML Tag   Relevancy-0.281315472 %94 %
14Entities in Sentences   Relevancy-0.281215171 %94 %
15Variations in Body Tags   Relevancy-0.212892464073 %88 %
16Variations in H1, H2, and H3 Tags   Relevancy-0.2191762 %84 %
17Variations in H1-H6 Tags   Relevancy-0.2218763 %84 %
18Number of Factors Used   Diversity-0.228417596 %87 %
19Variations in HTML Tags   Relevancy-0.212892463272 %89 %
20Variations in P Tags   Relevancy-0.264434265 %86 %
21Variations in H1 and H2 Tags   Relevancy-0.1998460 %85 %
22Number of CSS Includes   Technology-0.19191069 %78 %
23Variations in Sentences   Relevancy-0.1934814066 %88 %
24Term Frequency   Relevancy-0.196372 %89 %
25Entities in H2 Tags-0.1935753 %91 %
26Variations in the Title Tag   Relevancy-0.1915260 %83 %
27Variations in LI Tags   Relevancy-0.1931242963 %86 %
28LSI Words in Sentences   Relevancy-0.19310682166 %94 %
29Number of Referring Domains   Authority-0.1930998047 %67 %
30Variations in Search Result Display URL   Relevancy-0.1814276 %81 %
31LSI Words in Title Tag   Relevancy-0.1814665 %92 %
32Variations in Search Result Link Text   Relevancy-0.1814276 %81 %
33Number of Facebook Pages   Authority-0.186259 %81 %
34Entities in H1 Tags-0.1817256 %89 %
35Leading Variations in H1, H2, and H3 Tags   Relevancy-0.1821242 %83 %
36Has JSON-LD Schema Markup   Relevancy-0.181152 %75 %
37Variations in H1 Tags   Relevancy-0.1818153 %83 %
38Number of Backlinks   Authority-0.18221301360547 %69 %
39Leading Variations in H1-H6 Tags   Relevancy-0.1825244 %85 %
40Variations in A Tags   Relevancy-0.1856264062 %84 %
41Variation Count in Top 30KB   Relevancy-0.18105394163 %83 %
42Number of Do Follow Backlinks   Authority-0.18212575294943 %69 %
43Clean Keyword Density in the HTML Tag   Relevancy-0.18367464 %78 %
44Search Result Number of Dirs in Path   Other-0.183270 %78 %
45Variations in Meta Description   Relevancy-0.1877251 %80 %
46Unabridged Word Count   Size-0.1822692199180 %86 %
47Word Count   Size-0.187700155780 %86 %
48Number of HTML Tags   Size-0.173261111680 %87 %
49Variations in H2 Tags   Relevancy-0.1787344 %82 %
50Entities in Meta Description Tag   Relevancy-0.1720356 %88 %
51Clean Text Kilobytes   Size-0.171061376 %86 %
52Variations in Script Tags   Relevancy-0.173600218258 %85 %
53Entities in H3 Tags-0.1727745 %91 %
54Variations in OpenGraph Title   Relevancy-0.1710150 %79 %
55Number of P Tags   Size-0.171324075 %85 %
56Number of Images   Size-0.171303176 %87 %
57Number of No Follow Backlinks   Authority-0.174971673834 %64 %
58Variation Density in Top 30KB   Relevancy-0.17571455 %76 %
59Number of Sentences   Size-0.1755812479 %85 %
60Variations in ALT Attributes   Relevancy-0.17301743 %81 %
61Exact Matches in the HTML Tag   Relevancy-0.175011829 %86 %
62Percentage of DoFollow Links   Authority-0.171008177 %88 %
63Number of Images with ALT Text   Size-0.171002172 %87 %
64Number of Instagram Pages   Authority-0.1633244 %79 %
65Number of HTTPS Links   Authority-0.1644315677 %85 %
66Variations in Span Tags   Relevancy-0.1616521249 %84 %
67Percentage of DoFollow Internal Links   Authority-0.16937176 %84 %
68Leading Variations in Title Tag   Relevancy-0.161130 %79 %
69Page Size Kilobytes   Size-0.16106128380 %83 %
70Variations in OpenGraph Description   Relevancy-0.1665245 %78 %
71Number of Links   Authority-0.1644315778 %85 %
72LSI Words in H1 Tags   Relevancy-0.1618558 %92 %
73Number of DoFollow Links   Authority-0.1643515377 %85 %
74Leading Variations in H1 Tags   Relevancy-0.162128 %79 %
75Number of Internal Links   Authority-0.1643214377 %85 %
76Title Tag Has Entities   Relevancy-0.161167 %87 %
77Number of Heading Tags   Size-0.16592376 %84 %
78TF/IDF   Relevancy-0.161153 %84 %
79Has Entities in H1 Tags   Relevancy-0.161157 %85 %
80LSI Words in Meta Description Tag   Relevancy-0.16291154 %89 %
81Number of External Links   Authority-0.16781574 %84 %
82Variations in Main Tags   Relevancy-0.162464311637 %86 %
83LSI Words in H2 Tags   Relevancy-0.16832457 %90 %
84Number of Forms   Technology-0.1616356 %80 %
85Number of H2 Tags   Size-0.1628869 %84 %
86Variations in Search Result Document File Name   Relevancy-0.1610142 %79 %
87Number of DoFollow External Links   Authority-0.16641473 %84 %
88Flesch Kincaid Reading Grade Level   Other-0.167193 %87 %
89Inline CSS Kilobytes   Size-0.162126162 %79 %
90Number of Prices   Size-0.16148018466 %84 %
91Number of JavaScript Includes   Technology-0.16471876 %79 %
92Number of Questions   Size-0.16611165 %80 %
93Number of H1 Tags   Size-0.154270 %86 %
94Number of HTML Comments   Size-0.156815572 %84 %
95Variations in First 100 Words   Relevancy-0.15367657 %82 %
96Has Entities in H2 Tags   Relevancy-0.151154 %83 %
97Number of LinkedIn Pages   Authority-0.155132 %80 %
98Search Result Host Length   Size-0.15251779 %78 %
99Variations in Nav Tags   Relevancy-0.1599435443 %82 %
100Search Result Domain Length   Size-0.15251779 %78 %
101Has Form   Technology-0.151155 %75 %
102Inline JavaScript Kilobytes   Size-0.155088177 %82 %
103Has Meta Viewport   Technology-0.151178 %83 %
104Number of Absolute URLs   Authority-0.15120727679 %82 %
105Search Result Uses HTTPS   Other-0.151180 %84 %
106Variations in Search Result URL Path   Relevancy-0.158143 %82 %
107Has Privacy Policy   Trust-0.151158 %76 %
108Variations in the Canonical URL   Relevancy-0.15104245 %82 %
109Variations in H3 Tags   Relevancy-0.15134333 %80 %
110Variations in Distinct A Tag HREF Attributes   Relevancy-0.1516082754 %88 %
111Number Of JSON-LD Types   Relevancy-0.151241556 %81 %
112Number of H3 Tags   Size-0.1535961 %82 %
113Variations in A Tag HREF Attributes   Relevancy-0.1524104454 %89 %
114Has Meta Charset   Technology-0.151173 %80 %
115Variations in Absolute URLs   Relevancy-0.15141578855 %86 %
116Percentage of DoFollow External Links   Authority-0.15481171 %81 %
117Has Canonical URL   Authority-0.151168 %79 %
118Leading Variations in H2 Tags   Relevancy-0.159121 %81 %
119Average Words Per Sentence   Size-0.1510303677 %81 %
120Number of Images without ALT Text   Size-0.14891058 %85 %
121Number of Questions In Headings   Size-0.148237 %79 %
122Number of Social Pages   Authority-0.1436464 %81 %
123Title Word Count   Size-0.1413778 %77 %
124Has FavIcon   Technology-0.141172 %82 %
125Has Contact Page   Trust-0.141162 %76 %
126Title Length   Size-0.14934878 %78 %
127Has Meta Description   Relevancy-0.141164 %76 %
128Variations making whole H1, H2, and H3 Tags   Relevancy-0.142115 %76 %
129Variations in Section Tags   Relevancy-0.1427962136 %84 %
130Number of Facebook Accounts   Authority-0.142129 %78 %
131Variations making whole H1-H6 Tags   Relevancy-0.142116 %77 %
132Meta Description Tag Has Entities   Relevancy-0.141156 %79 %
133Uses JSON-LD name   Other-0.141152 %72 %
134Variations in TITLE Attributes   Relevancy-0.14302633 %79 %
135Variations in Footer Tags   Relevancy-0.1454562233 %78 %
136Has Entities in H3 Tags   Relevancy-0.141145 %81 %
137Meta Description Length   Size-0.1441911764 %79 %
138Variations in Search Result URL   Relevancy-0.1424150 %77 %
139Exact Matches in H1-H6 Tags   Relevancy-0.1411120 %84 %
140LSI Words in H3 Tags   Relevancy-0.141132350 %89 %
141Number of Twitter Accounts   Authority-0.142126 %72 %
142Is Store Page   Other-0.141145 %68 %
143Entities in H4 Tags-0.1413222 %87 %
144Has Schema Markup   Relevancy-0.141162 %72 %
145Word Count in Meta Description   Size-0.14651964 %79 %
146Headings Has Question   Other-0.141137 %73 %
147Number of Email Addresses   Trust-0.1470443 %80 %
148Is Purchase Page   Other-0.141144 %72 %
149Uses Schema name   Other-0.141160 %63 %
150Exact Matches in Top 30KB   Relevancy-0.1433219 %78 %
151Has Terms of Service   Trust-0.131139 %70 %
152Has Meta Twitter Card   Authority-0.131149 %64 %
153Has Email   Trust-0.131142 %71 %
154Has OpenGraph Type   Relevancy-0.131158 %71 %
155Has Copyright   Trust-0.131161 %71 %
156Variations in Meta Twitter Content   Relevancy-0.135122 %72 %
157Number of US Phone Numbers   Trust-0.138301242 %82 %
158Variations Making Whole LI Tags   Relevancy-0.135123 %77 %
159Variations making whole A Tags   Relevancy-0.1383227 %77 %
160Number of Social Accounts   Authority-0.135245 %78 %
161Exact Matches in Sentences   Relevancy-0.1361321 %87 %
162Variations in Meta Twitter Description   Relevancy-0.1341120 %73 %
163Variations in Strong Tags   Relevancy-0.1393225 %78 %
164Number of H4 Tags   Size-0.1323438 %76 %
165Uses Schema url   Other-0.131155 %60 %
166Exact Matches in Title Tag   Relevancy-0.132118 %81 %
167Uses JSON-LD url   Other-0.131146 %72 %
168Variations Making Whole Span Tags   Relevancy-0.136119 %81 %
169Uses Schema listitem   Other-0.131142 %57 %
170Variations in I Tags   Relevancy-0.13259423 %79 %
171Number of Questions In H2 Tags   Size-0.134123 %75 %
172Has OpenGraph Image   Relevancy-0.131151 %69 %
173Uses Schema product   Other-0.131110 %47 %
174Uses JSON-LD ListItem   Other-0.131135 %65 %
175Uses JSON-LD description   Other-0.131141 %67 %
176Uses Schema description   Other-0.121146 %57 %
177Uses Schema breadcrumblist   Other-0.121141 %57 %
178Number of Nofollow Links   Authority-0.1282526 %78 %
179Has US Phone Number   Trust-0.121140 %71 %
180Number of Questions In H3 Tags   Size-0.124118 %75 %
181Uses JSON-LD startDate   Other-0.12115 %11 %
182Uses JSON-LD price   Other-0.12116 %45 %
183Uses Schema sku   Other-0.12117 %28 %
184Variations in the last 100 words   Relevancy-0.12366338 %79 %
185Uses JSON-LD BreadcrumbList   Other-0.121135 %65 %
186Search Result URL Length   Size-0.121046496 %59 %
187Variations making whole H1 Tags   Relevancy-0.121110 %75 %
188Number of NoFollow External Links   Authority-0.1236217 %73 %
189Uses Schema pricecurrency   Other-0.12118 %44 %
190Uses Schema image   Other-0.121121 %61 %
191Number Of Claimed Brands   Other-0.1214223 %75 %
192Leading Variations in H3 Tags   Relevancy-0.1211115 %77 %
193Uses JSON-LD Product   Other-0.12119 %54 %
194Uses JSON-LD sku   Other-0.12116 %34 %
195Uses Schema pricevaliduntil   Other-0.12117 %21 %
196Uses Schema price   Other-0.12117 %39 %
197Uses Schema offer   Other-0.12119 %47 %
198Is Home Page   Other-0.121120 %38 %
199Uses JSON-LD Offer   Other-0.12118 %55 %
200Uses JSON-LD priceCurrency   Other-0.12118 %51 %